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EM91440 SERIES EM91440 SERIES

This specification are subject to be changed without notice.

TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR AND DUAL-TONE MELODY GENERATOR Patent Number : 75201, 62630, 71772, 41204, 95595 95899, 99155 (R.O.C) Patent Pending : 83210291 (R.O.C)
EM91440 SERIES EM91440 SERIES
GENERAL DESCRIPTION
The EM91440 is a series of tone / pulse switchable dialers that is composed of T / P dialer and T / P dialer with 40-set memories. The EM91440 series provide necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone , and lock functions. The lock function is designed to inhibit toll dialing operation. Beside this, melody generator, ring detector and SDO (Serial Data Output) functions are provided in advance version. Melody generator will output dual-tone music in line hold duration. Ring detector can prevent illegal dialing from pocket dialer. The SDO is designed to drive LCD driver and voice synthesizer. In this application, the dialing numbers can be displayed on LCD screen with EM32100 ( or EM32116 ).
FEATURES
· Tone / Pulse switchable. · Wide operating voltage from 2.0 V to 5.5 V. · Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically. · Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate, M / B ratio, Flash time, lock dialing functions. · SDO function supports LCD driver and voice synthesizer to indicate dialing numbers. · Line hold function is designed for stopping conversation temporality. · Melody generator provides music on hold function. · Lock function provides conventionality key lock and password lock operations. · Ring detector is designed to prevent illegal dialing from pocket dialer. · 40-set three touch repertory memory, each one can hold data up to 16 digits. · A 32-digit LNB (last number) redial memory. · Keytone function provides rapidly keying recognition. · Handfree function provides on-hook dialing and speakerphone application. · Pause and P-T time are fixed to 3.6 seconds. · Tone duration and inter-tone pause time are fixed to 98 ms. · Using 3.579545 MHz crystal or ceramic resonator. · Package forms: PDIP, skinny.
ORDERING INFORMATION
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
EM91440
Pin Assignment
EM91440AP
COL5 COL4 / KT COL3 COL2 COL1 XIN XOUT XMUTE VSS 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 HDO PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF
EM91440BP
COL5 COL4 / KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 HDO PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO
EM91440CK
NC COL5 COL4 / KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 SDO HDO PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO
EM91440DK
NC COL5 COL4 / KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI DRING 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 SDO HDO PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO RMUTE
Keyboard Arrangement
ROW1 ROW2 ROW3 ROW4
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
FUNCTIONAL BLOCK DIAGRAM
RMUTE SDO HFO HDO COL1 COL2 COL3 COL4 / KT COL5 XMUTE Row / Column programming counter
Keyboard interface (column)
Output circuit
Memory (Melody) XIN XOUT Oscillator
latch & decoder
D / A converter
Timing / Control circuit ROW1 ROW2 ROW3 ROW4 VDD HFI HKS DRING VDD Keyboard interface (Row) Input circuit Pulse generator PO
PIN DESCRIPTIONS
Symbol ROW1~ROW4 Function Keyboard scan pins of row group. In idle state (HKS is "High" and HFO is "Low"), these pins stay "High impedance" level to prevent power consumption. Otherwise, these pins switch to "High" level for detecting keyboard entry. These pins will output 600 Hz signal while keyboard is scanning. Keyboard scan pins of column group. In idle state, these pins stay "High impedance" level. Otherwise these pins switch to "Low" level for detecting keyboard entry. These pins will output 600 Hz signal while keyboard is scanning. The fourth column group pin of the keyboard that also provides the keytone output . Normally, this pin stays "Low" level for detecting keyboard entry. After a valid keyboard entry, this pin will output keying confirmation tone that is 600 Hz signal and 30 ms duration. To prevent signal interference, while DTMF issue, it will disable key tone output except function key. Oscillator input and output pins. A 3.579545 MHz crystal or ceramic resonator must be crossed connection to XIN and XOUT pins which generate system clock. The Tone / Pulse MUTE signal output pin that is NMOS open-drain output structure. This pin will switch to "Low" level during Tone / Pulse dialing and hold function . Otherwise, this pin stays "High impedance" level. Positive and negative power supply input pins. Recommended operating voltage from 2.0Vdc to 5.5Vdc. Handfree inputs pin which accepts falling edge signal to turn "on" or turn "off" handfree function. This pin is hysteresis input structure and built-in pull up resistor (typically 200 Kohms). Handfree outputs pin that is designed to control telephone line for on-hook dialing or control speakerphone circuit for handfree conversation. When handfree function is executed, this pin will switch to"High". Otherwise, this pin stays "Low" level. The DTMF (Dual Tone Multi-Frequency) and music signals output pin. Normally, this pin stays "Low" level. In Tone dialing mode, this pin will output DTMF signal that is corresponding to keyboard 0 . 9, and # keys. Beside this, in the line hold duration, this pin will issue dual-tone music for telephone line.
COL1~COL3 and COL5
COL4 / KT
XIN and XOUT XMUTE
VDD and VSS HFI
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Symbol HKS
DRING
RMUTE
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
FUNCTION DESCRIPTIONS Dialing signal selection
Tf (ms) 600 100 80 300 Lock number none 0 9 0.9
Normal dialing
Directly keying digital key on keyboard which number can be dialing output and stored in LNB memory automatically. Operating procedure described as follow : · To select Pulse or Tone mode. · Off-hook or turn on HF function. · Keying d1, d2, . , dn. The "d" expressed digital keypad that included 1~9, , 0, #, P, and PT keys. The "n" expressed unlimited. · The numbers d1, d2, . , dn will be dialed out in Pulse or Tone mode as selection.
LNB redial memory
Storing: In normal dialing mode, every digital key was entry which number will be stored in LNB memory automatically. If entry digits are more than 32 digits, the redial function of LNB memory will be disabled. Otherwise, these numbers stored in LNB memory can be redial output. This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Redialing: After normal dialing, directly keying F key (or On-Off hook once) and keying RD key on keyboard. The numbers that are stored into LNB memory will be dialed output.
Repertory memory
The EM91440 series incorporated several sets repertory memory and each one can store number up to 16 digits. These memories were designed to 40 sets types. In memory storing, if stored numbers are more than 16 digits that only the previous 16 digits can be stored into specific memory. Otherwise, these numbers can be stored entirely. After memory dialed out, the content of LNB is keeping to current data. Memory types Indirect (three-touch) operation Off-hook (or turn on HF function), push (ST, d1, d2, . , dn, ST, n, n.) The numbers d1, d2, . , dn will be stored into memory location "n n". The "n n" expressed digital number from 01 to 40.
Dialing (after memory dialed out, the content of LNB is keeping to current data) Indirect (three-touch) memory · To select Pulse or Tone mode. · Off-hook (or Turn on HF function), push A, n , n key. The numbers that are stored in indirect memory location "n n" will be dialed out in Pulse or Tone mode as selection . The "n n" expressed digital number from 01 to 40. Pause (P) key operation The Pause (P) key is designed to support pause operation in dialing duration. "P" key can be stored in memory and it will occupy one digital position. · To select Pulse or Tone mode. · Off-hook (or turn on HF function), push (d1, d2, . , dn, RD / P, k1, k2, . , kn.) These numbers will be dialed out as following sequence: d1, d2, . , dn, Tp, k1, k2, . , kn. Pulse to Tone ( / T) key operation The Pulse to Tone ( / T) key is designed to support toll dialing (long distance call) or PABX system operation. The " / T" key can be stored in memory and it will occupy one digital position. · To select Pulse mode. · Off-hook (or turn on HF function), push d1, d2, . , dn, / T, k1, k2, . , kn. These numbers will be dialed out as following sequence: d1, d2, . , dn, Tpt, k1, k2, . , kn. (pulse mode) (tone mode) This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Flash (F) key operation The Flash (F) key is designed to break telephone line temporarily. After F key is depressed, this dialer will send a flash signal to break line 600 ms, 300 ms, 100 ms or 80 ms as ROW3 and ROW4 selection. Handfree (HF) function The handfree function is designed to support on-hook dialing and loudspeaker application which can be turn "on" or "off" with falling edge signal from HFI pin. During handfree function is executed, the HFO pin is switched to "high". Otherwise the HFO pin stays "low" level. One of the following operations can turn off Handfree function (HFO pin return to "Low"). · On-off hook once. · Trigger HFI pin with falling edge signal. · Turn on Hold (HD) function. (HDO pin switched to "High") Hold (HD) function The Hold function is designed to stop conversation temporarily. In off-hook state (or HF function is turned on), to press HD key on the keyboard, the Hold function can be turned "on" (HDO pin switched to "High"). One of the following operations can turn off Hold function (HDO pin switched to "Low"). · On-off hook once. ·To press HD key over 280 ms. · Turn on Handfree (HF) function. (HFO pin switched to "High") Special Note: A 300 ms delay time (Tdly) at the first Off-Hook or turn on Handfree that is a special designed to avoid a rapid key entry (dummy number ) in this time duration , and a long distance call number follows. For example, Off-Hook , "3" , ...... , "0" , 1, 2, 3... Dummy key Lock number key The dummy number "3" is not detected by the centered office or PABX , but the following numbers "0" , 1, 2, 3.. long distance call can be dialed out normally since the leading number "3" is not the Lock-number defined in EM91440 series. To prevent the unavoidable long distance call, then EM91440 inhibits the key entry during Tdly.
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Operating flow chart
3 Off-hook Hand-free State
Music on Hold EM91440 series built-in a melody generator to generate dual-tone music on DTMF output pin. The music is designed for telephone line at line holding. SDO (Serial Data Output) function The SDO is serial data output which format is same as UART protocol. SDO function is designed to drive LCD driver and voice synthesizer. So the dialing numbers can be display on LCD screen with EM32100 (or EM32116 ). The SDO signal consists of two start bits, six data bits and two stop bits. Each bit time is about 3.9 ms (256 Hz) and output sequences are following by start bits, data bits (LSB to MSB) and stop bits.
ready
0 start bits
bit2 bit3 data bits
0 stop bits
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
1101 1110 P
HF 1010 Speaker
F 1111 clear all display
(Lock state) 0001 Lock
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Ring detector
The Ring detector is designed to prevent illegal dialing from pocket dialer. Following the procedures ( i, ii, iii ), this dialer will detect DRING pin to control RMUTE output level. If DRING is detected a "Low" level, the RMUTE stays "High impedance". If DRING is detected a "High" level, the RMUTE will output "Low" until This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
keyboard entry. In actual application of the RMUTE pin is recommended connection to microphone of the phone handset to prevent that the dialing signal (DTMF) is coupling by the Microphone of the phone handset. (such as pocket dialer) i. In idle state, HKS is from "High" to "Low" (pick up handset action). ii. In idle state, turn on handfree function. iii. The flash operation ( F key ).
ABSOLUTE MAXIMUM RATINGS(Ambient temperature is 25 °C, all voltages referenced to VSS)
Items Power supply voltage Input voltage range Operating temperature Storage temperature Power consumption Sym. VDD VIN TOPR TSTO PD Rating 6.0 Vdc VSS -0.3V ~ VDD+0.3V 0 ~ +50 -55 ~ 125 500 Unit V V °C °C mW
ELECTRICAL CHARACTERISTICS
Min. 2.0 2.0 -
Max. Unit
Memory retention current Standby current
Imrt Istby
HKS, HFI & DRING pins: input voltage HFO & HDO pins source current PO, HFO, XMUTE, RMUTE & SDO pins: sink current PO, XMUTE, RMUTE and SDO pins: leakage current HFI pin input resistance DRING pin input resistance Keyboard scanning pins output current (except COL4 / KT) COL4 / KT source current sink current
ViH ViL IoH IoL IoH Rhfi Rdring IoH IoL IoH IoL
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
ELECTRICAL CHARACTERISTIC
Parameter Keyboard debounce time Key tone signal: frequency duration Pause time Pulse to Tone waiting time Flash time
Sym. Tdb Fkt Tkt Tp Tpt Tf
Min. -0.2 0.5 142 1 5 96 96
Typ. 20 600 30 3.6 3.6 600 100 80 300 20 10 40:60 33:66 800 500 160 2 -30 98 98 (-23.3) 53 (-25.3) 42 280 3.9 300
Max. Unit ms
Condition
Pulse rate Make / Break ratio Inter-digit pause time DTMF pin: sink current DTMF signal DC level DTMF signal: ac level pre-emphase distortion load resistance Minimum tone duration Minimum inter-tone pause Melody output signal: main tone ac level Sub-tone HD key release hold function debounce time SDO every bit time Off-Hook delay time
PSR MBR Tidp IoL Vdc Vdtmf Twist THD ZL Tp Titp
Vmtac Vstac Thdrdb Tbit Tdly
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
TIMING DIAGRAM
HKS KEY IN Tdb KT Tkt XMUTE HDO SDO PO Tidp DTMF OSC. Tdly
Hi-impedance
Figure 1. Pulse mode operating timing
HKS KEY IN KT XMUTE HDO SDO PO DTMF OSC.
Hi-impedance
Figure 2. DTMF mode operating timing
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Hi-impedance
Figure 3. Pulse mode LNB redial timing
Hi-impedance
Td Titp
Figure 4. DTMF mode LNB redial timing
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
HKS KEY IN KT XMUTE Tp HDO SDO PO DTMF OSC.
Hi-impedance 2 RD / P 3
Figure 5. Pause key operating timing
HKS KEY IN KT XMUTE HDO SDO PO DTMF OSC.
Hi-impedance
Figure 6. Pulse to Tone (PT) operating timing
HKS KEY IN KT XMUTE HDO SDO PO Tf DTMF OSC.
Hi-impedance
Figure 7. Flash key operating timing This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
HKS KEY IN Tdb KT SDO
sT sT b0 b1 b2 b3 b4 b5 spT spT
Hi-impedance
HKS KEY IN HFO HDO XMUTE SDO PO HF HD HF HD HD HD HF HD HD @ 280 ms Thdrdb
MELODY Hi-impedance
@ : It can be triggled by extension telephone set for hold function release Figure 9. HF and HD operating timing
HFI or HKS KEY
KT Tdly OSC. "0" digit dialing time Hi-impedance
Figure 10. Off-Hook delay time This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Toff RING Ton DRING HKS RMUTE
Figure 11. Timing of receiving an incoming call The external ring detection circuit must send a low signal at the total ring cycle (Ton and Toff)
RING DRING HKS RMUTE
Figure 12. Timing of making an outgoing call
This specification are subject to be changed without notice.
SW1B 4 HANDFREE HANDSET 5 6 D6 2 2K7 R33 2 CE 1K5 2 R56 3 Q14 C945 1 47K 2 1N4148 2 2 3 1 2 C31 3 HDO JP10 1N4148 R67 50 C23 47U D5 2 3 2 Q9 C945 1 C21 .1uF C22 1uF COL4 / KT 1 10K 3 Q10 C945 AUDIO POWER AMPLIFER R68 100K HDO 47K D19 1 22K 1N4148 47K R45 47K R57 R44 1N4148 2 2 1 R43 R46 R65 220K ROW1 1 C24 220uF C17 .01U .1u 5V1 D13 3 R37 C25 .1U R69 47K 100K 2 Q4 C945 1 Q19 1815 1N4148 1 D18 2 JP9 EM32100 HFO 1 D17 EM32100 Q18 1815 R36 470K 1 D16 1 R55 470K R49 1N4148 C16 .001U HOOK
R54 1 R48 100K
SW1A 1
ONHOOK
OFFHOOK
1 D7 1N4148 R52 220K
R47 1 D14 1N4148 2
Q6 A92
BRIDGE
APPLICATION CIRCUIT
R35 2K2
EM91440 series Application circuit
BRIDGE
2 JUMPER 560k
JUMPER
RMUTE
PC817 SDO
COL4 / KT
XMUTE
DRING
This specification are subject to be changed without notice.
560K 560K 560K JUMPER CE 2 TO 4 LINE VCC SPEECH LCD DRIVER 1.5V NETWORK
22U / 50V
DRING
EM91440DK
DRING
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
8 / 10 Digits LCD Pannel
EM32100 Application Circuit :
220k 220k 3 2 2 DIODE 1 2 DIODE 1 DIODE 2 1µ 20p 32768Hz 20p 47k 2 3 C945 1 1.5V 1 C945 100k
VDD 200k
MS1 MS2 SD1 HKS VDD XIN NC XOUT VSS 24 / 12 ENRTC NC
This specification are subject to be changed without notice.
SEG6 SEG7 SEG8 SEG9 NC SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16
Package type : QFP 48 pins or chip form provided
EM32100
1 100k
37 38 39 40 41 42 43 44 45 46 47 48 SEG5 SEG4 SEG3 SEG2 SEG1 COM1 COM2 COM3 TEST2 TEST1 F32H NC
SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 VEE VN VP NC
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
COM3 COM2 COM1 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0
SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10
This specification are subject to be changed without notice. Package type : QFP 64 pins or chip form provided
Hook Switch detection circuit LINE
EM32116 Application Circuit :
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
EM91440 SERIES
LCD110
2 1 3 SW HOOK 100k 3 .1µ C945 1 24 / 12 ENRTC ENCLND COM3 COM2 COM1 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 2 VDD .1µF
470k ON OFF OFF OFF 32768Kz .1µF .1µF 1 2 3 ON 1 2 3 ON HOUR 1 2 3 20p 20p CALENDAR RTC
EM32116
TEST2 BATCKOF BATLOW SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SRG6 SEG7 SEG8 SEG9
XOUT XIN VSS VC2 VC1 V3 V2 VDD HKS SDI MS2 MS1 F32HZ TEST1
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
PACKAGE INFORMATION
Example : EM (1) 914XX P (2) (3) (1) ELAN MICRO. pefix (2) Type number (3) Package code: PPDIP KSkinny RSDIP 18 / 20 / 28 Lead Plastic Package
18 PDIP
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 5.334 0.381 0.356 0.558 1.150 1.778 0.204 0.381 22.35 23.37 7.620 8.255 6.096 7.112 2.286 2.794 10.92 2.921 4.064
20 PDIP
INCHES MILIMETERS INCHES MIN. MAX. DIM MIN. MAX. MIN. MAX. .210 A 5.334 .210 .015 A1 0.381 .015 .014 .022 B 0.356 0.558 .014 .022 .045 .070 B1 1.150 1.778 .045 .070 .008 .015 C 0.204 0.381 .008 .015 .880 .920 D 25.40 26.67 1.000 1.050 .300 .325 E 7.620 8.255 .300 .325 .240 .280 E1 6.096 7.112 .240 .280 .090 .110 e 2.286 2.794 .090 .110 .430 eB 10.92 .430 .115 .160 L 2.921 4.064 .115 .160 MILIMETERS DIM MIN. MAX. A 6.350 A1 0.381 B 0.356 0.558 B1 1.016 1.778 C 0.204 0.381 D 35.56 37.85 E 15.24 15.88 E1 13.21 14.73 e 2.286 2.794 eB 17.78 L 2.921 5.080
28 PDIP
INCHES MIN. MAX. .250 .015 .014 .022 .040 .070 .008 .015 1.400 1.490 .600 .625 .520 .580 .090 .110 .700 .115 .200
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
22 / 24 Lead Plastic Package-Skinny
22 PDIP (skinny)
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 4.752 0.381 0.356 0.558 1.27 1.778 0.204 3.556 25.90 26.67 7.620 8.255 6.223 6.604 2.286 2.794 8.382 10.16 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .014 1.02 1.05 .300 .325 .245 .260 .090 .110 .330 .400 .115 .160 DIM A A1 B B1 C D E E1 e eB L
24 PDIP (skinny)
MILIMETERS MIN. MAX. 4.572 0.381 0.356 0.558 1.27 1.778 0.204 0.381 31.24 32.26 7.620 8.255 6.223 6.731 2.286 2.794 8.636 9.652 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .015 1.23 1.270 .300 .325 .245 .265 .090 .110 .340 .380 .115 .160
This specification are subject to be changed without notice.
EM91440 SERIES
TONE / PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
42 SDIP Package
42 SDIP
DIM A A1 A2 B B1 C D E1 e eB D1 L MILIMETERS MIN. MAX. 5.08 0.381 3.937 4.191 0.356 0.559 0.914 1.116 0.204 0.304 36.70 37.34 13.84 14.10 1.727 1.829 15.24 17.78 0 0.127 2.921 3.429 INCHES MIN. MAX. 0.200 0.015 0.155 0.165 0.014 0.022 0.036 0.044 0.008 0.012 1.445 1.470 0.545 0.555 0.068 0.072 0.600 0.70 0 0.005 0.115 0.135
This specification are subject to be changed without notice.