DESCRIPTIO Supply Current 300µA 0.2µA Supply Current SHUTDOWN Pro

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DESCRIPTIO Supply Current 300µA 0.2µA Supply Current SHUTDOWN Pro

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LTC1327 3.3V Micropower EIA/TIA-562 Transceiver
DESCRIPTIO
Supply Current 300µA 0.2µA Supply Current SHUTDOWN Protection ±10kV Operates From Single 3.3V Supply Uses Small Capacitors 0.1µF Operates 120k Baud Three-State Outputs High Impedance When Output Overvoltage Does Force Current Back Into Supplies EIA/TIA-562 Lines Forced ±25V Without Damage Flowthrough Architecture
LTC1327 advanced power, three-driver/fivereceiver EIA/TIA-562 transceiver. load condition, supply current only 300µA. charge pump only requires four 0.1µF capacitors. SHUTDOWN mode, supply current further reduced 0.2µA. EIA/TIA-562 outputs assume high impedance state SHUTDOWN with power off. LTC1327 fully compliant with data rate overvoltage EIA/TIA-562 specifications. transceiver operate 120k Baud with 1000pF//3k load. Both driver outputs receiver inputs forced ±25V without damage, survive multiple ±10kV strikes.
APPLICATI
Notebook Computers Palmtop Computers
TYPICAL APPLICATI
0.1µF 0.1µF ON/OFF LTC1327
3-Drivers/5-Receivers with SHUTDOWN
1327 TA01
Supply Current Temperature
0.1µF
0.1µF
QUIESCENT CURRENT (µA)
3.3V DRIVERS INPUTS TIED
SHUTDOWN CURRENT (µA)
QUIESCENT CURRENT
SHUTDOWN CURRENT
TEMPERATURE (°C)
LTC1327 TA02
LTC1327
ABSOLUTE
RATI
PACKAGE/ORDER ATIO
VIEW PACKAGE 28-LEAD PLASTIC
Supply Voltage (VCC) Input Voltage Driver 0.3V (VCC 0.3V) Receiver On/Off -0.3V (VCC 0.3V) Output Voltage Driver -25V Receiver -0.3V (VCC 0.3V) Short-Circuit Duration Driver Output Indefinite Receiver Output Indefinite Operating Temperature Range Commercial LTC1327C 70°C Storage Temperature Range 65°c 150°C Lead Temperature (Soldering, sec). 300°C
ORDER PART NUMBER LTC1327CG LTC1327CN LTC1327CS
ON/OFF PACKAGE 28-LEAD SSOP
PACKAGE 28-LEAD PLASTIC
TJMAX 125°C, 96°C/ TJMAX 125°C, 56°C/ TJMAX 125°C, 85°C/
Consult factory Industrial Military grade parts.
ELECTRICAL CHARACTERISTICS
PARAMETER Driver Output Voltage Swing Logic Input Voltage Level Logic Input Current Output Short-Circuit Current Output Leakage Current Receiver Input Voltage Thresholds Hysteresis Input Resistance Output Voltage Output Short-Circuit Current Output Leakage Current ±10V Input Threshold Input High Threshold Positive Negative GND) CONDITIONS
3.3V, 0.1µF, unless otherwise noted.
UNITS
Input Level (VOUT High) Input High Level (VOUT Low) VOUT SHUTDOWN (Note VOUT ±20V
±500
Output Low, IOUT 1.6mA (VCC 3.3V) Output High, IOUT 160µA (VCC 3.3V) Sinking Current, VOUT SHUTDOWN (Note VOUT
LTC1327
ELECTRICAL CHARACTERISTICS
PARAMETER Power Supply Generator Output Voltage Output Voltage Supply Rise Time Power Supply Supply Current Supply Leakage Current (VCC) On/Off Threshold On/Off Threshold High Load (Note SHUTDOWN (Note
3.3V, 0.1µF, unless otherwise noted.
UNITS
CONDITIONS IOUT IOUT IOUT IOUT SHUTDOWN Turn-On
CHARACTERISTICS
Slew Rate Driver Propagation Delay (TTL EIA/TIA-562) Receiver Propagation Delay (EIA/TIA-562 TTL) 51pF 1000pF tHLD tLHD tHLR tLHR
V/µs V/µs
denotes specifications which apply over operating temperature (0°C 70°C). Note Absolute Maximum Ratings those values beyond which life device impaired.
Note Supply current measured with driver receiver output unloaded driver inputs tied high. Note Supply current measurement SHUTDOWN mode performed with VON/OFF
TYPICAL PERFOR CHARACTERISTICS
Driver Output Voltage Temperature
DRIVER OUTPUT VOLTAGE
THRESHOLD VOLTAGE
3.3V OUTPUT HIGH
SUPPLY CURRENT (mA)
DRIVERS WITH LOAD
3.3V OUTPUT
TEMPERATURE (°C)
1327
Receiver Input Thresholds Temperature
Supply Current Data Rate
3.3V 1000pF DRIVERS ACTIVE
VTH+
VTH-
TEMPERATURE (°C)
DATA RATE BAUD)
1327
1327
LTC1327
TYPICAL PERFOR CHARACTERISTICS
Supply Current Data Rate
SUPPLY CURRENT (mA) DATA RATE BAUD) 3.3V 1000pF DRIVERS ACTIVE
SHORT-CIRCUIT CURRENT (mA)
LEAKAGE CURRENT (µA)
Receiver Short-Circuit Current Temperature
INPUT DRIVER OUTPUT 1000pF DRIVER OUTPUT
SHORT-CIRCUIT CURRENT (mA)
1327 1327
TEMPERATURE (°C)
1327
CTIO
VCC: 3.3V Input Supply Pin. Supply current 0.2µA SHUTDOWN mode. This should decoupled with 0.1µF ceramic capacitor. GND: Ground Pin. ON/OFF: TTL/CMOS Compatible Shutdown Pin. logic puts device SHUTDOWN mode which reduces supply current 0.2µA places drivers receivers high impedance state. This cannot float. Positive Supply Output (EIA/TIA-562 Drivers). 2VCC This requires external capacitor 0.1µF charge storage. capacitor tied ground 3.3V. With multiple devices, pins paralleled into common capacitors. large numbers devices, increasing size shared common storage capacitors recommended reduce ripple. Negative Supply Output (EIA/TIA-562 Drivers). (2VCC 1.3). This requires external capacitor 0.1µF charge storage.
1327
Driver Leakage SHUTDOWN Temperature
TEMPERATURE (°C)
Driver Short-Circuit Current Supply Voltage
VOUT VOUT -20V
SUPPLY VOLTAGE
1327
1327
Driver Output Waveform
RECEIVER OUTPUT 50pF
Receiver Output Waveform
INPUT
LTC1327
CTIO
Commutating Capacitor Inputs. These pins require external capacitors 0.1µF. from C1-, another from maintain charge pump efficiency, capacitor's effective series resistance should less than EIA/TIA-562 Driver Input Pins. Inputs TTL/ CMOS compatible. Inputs should allowed float. unused inputs VCC. OUT: Driver Outputs EIA/TIA-562 Voltage Levels. Outputs high impedance state when SHUTDOWN mode driver outputs protected against ±10kV human body model discharges. Receiver Inputs. These pins forced ±25V without damage. receiver inputs protected against ±10kV human body model discharges. Each receiver provides 0.4V hysteresis noise immunity. OUT: Receiver Outputs With TTL/CMOS Voltage Levels. Outputs high impedance state when SHUTDOWN mode allow data line sharing.
TEST CIRCUITS
Test Circuit
0.1µF 0.1µF EIA/TIA LINE PINS PROTECTED ±10kV ON/OFF LTC1327
LT1327 TC01
Driver Timing Test Load
0.1µF
51pF OUTPUT
1327 TC02
0.1µF
DRIVER INPUT
DRIVER OUTPUT 51pF
Receiver Timing Test Load
1327 TC03
LTC1327
SWITCHI WAVEFOR
Driver Propagation Delay Timing
INPUT 1.4V 1.4V
1327 WF01
OUTPUT
Receiver Propagation Delay Timing
1.7V 1.3V 0.8V
1327 WF02
INPUT
OUTPUT
APPLICATI
ATIO
LTC1327 compatible with RS232 parts. This table shows some devices receiver input thresholds.
INPUT THRESHOLD (VIL)
0.65 0.65 0.65 0.75 0.75 0.75 0.75 1.25 1.25 1.25 1.35 1.25 1.25 1.25
MANUFACTURER
Linear Technology
PART NUMBER
LT1080 LT1137A LT1330 LT1281 Others
Texas Instruments
SN75189 SN75189A MAX232 SN75C185
Maxim Sipex Motorola National
MAX232A MAX241 SP232 SP301 MC1489 MC1489A DS1489 DS14C89A
COMPATIBLE
INPUT HIGH THRESHOLD (VIH)
1.55 1.75 1.75 1.95 1.25 2.25 2.25 2.55
LTC1327
PACKAGE DESCRIPTIO
0.205 0.212* (5.20 5.38)
0.005 0.009 (0.13 0.22) 0.022 0.037 (0.55 0.95) 0.0256 (0.65) 0.010 0.015 (0.25 0.38) *THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED 0.006 INCH (0.15mm). 0.045 (1.14) 0.002 0.008 (0.05 0.21)
0.600 0.625 (15.240 15.875)
0.130 0.005 (3.302 0.127) 0.015 (0.381)
0.045 0.065 (1.143 1.651)
0.009 0.015 (0.229 0.381)
+0.025 0.625 -0.015
+0.635 15.87 -0.381
0.125 (3.175)
0.035 0.080 (0.889 2.032) 0.100 0.010 (2.540 0.254)
0.005 (0.127)
0.291 0.299 (7.391 7.595) (NOTE
0.093 0.104 0.010 0.029 (2.362 2.642) (0.254 0.737) 0.050 (1.270)
0.009 0.013 (0.229 0.330) NOTE 0.016 0.050 (0.406 1.270)
NOTE: IDENT, NOTCH CAVITIES BOTTOM PACKAGES MANUFACTURING OPTIONS. PART SUPPLIED WITH WITHOUT OPTIONS. THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED 0.006 INCH (0.15mm).
Information furnished Linear Technology Corporation believed accurate reliable. However, responsibility assumed use. Linear Technology Corporation makes representation that interconnection circuits described herein will infringe existing patent rights.
Dimensions inches (millimeters) unless otherwise noted. Package 28-Lead SSOP
0.397 0.407* (10.07 10.33) 0.068 0.078 (1.73 1.99)
0.301 0.311 (7.65 7.90)
0.045 (1.14)
Package 28-Lead Plastic
0.070 (1.778) 1.455 (36.957)
0.505 0.560 (12.827 14.224) 0.018 0.003 (0.457 0.076)
Package 28-Lead Plastic
0.037 0.045 (0.940 1.143) 0.697 0.712 (17.70 18.08) (NOTE
0.014 0.019 (0.356 0.482)
0.004 0.012 (0.102 0.305)
NOTE
0.394 0.419 (10.007 10.643)
LTC1327
U.S. Area Sales Offices
NORTHEAST REGION Linear Technology Corporation Oxford Valley 2300 Lincoln Hwy.,Suite Langhorne, 19047 Phone: (215) 757-8578 FAX: (215) 757-5631 Linear Technology Corporation Lowell St., Suite Wilmington, 01887 Phone: (508) 658-3881 FAX: (508) 658-2701 SOUTHEAST REGION Linear Technology Corporation 17060 Dallas Parkway Suite Dallas, 75248 Phone: (214) 733-3071 FAX: (214) 380-5138 CENTRAL REGION Linear Technology Corporation Chesapeake Square Mitchell Court, Suite A-25 Addison, 60101 Phone: (708) 620-6910 FAX: (708) 620-6977 SOUTHWEST REGION Linear Technology Corporation 22141 Ventura Blvd. Suite Woodland Hills, 91364 Phone: (818) 703-0835 FAX: (818) 703-0517 NORTHWEST REGION Linear Technology Corporation Sycamore Milpitas, 95035 Phone: (408) 428-2050 FAX: (408) 432-6331
International Sales Offices
FRANCE Linear Technology S.A.R.L. Immeuble Quartz" Chemin Justice 92290 Chatenay Malabry France Phone: 33-1-41079555 FAX: 33-1-46314613 GERMANY Linear Techonolgy GMBH Untere Hauptstr. D-85386 Eching Germany Phone: 49-89-3197410 FAX: 49-89-3194821 JAPAN Linear Technology Bldg. 4-4-12 Iidabashi, Chiyoda-Ku Tokyo, Japan Phone: 81-3-3237-7891 FAX: 81-3-3237-8010 KOREA Linear Technology Korea Branch Namsong Building, #505 Itaewon-Dong 260-199 Yongsan-Ku, Seoul Korea Phone: 82-2-792-1617 FAX: 82-2-792-1619 SINGAPORE Linear Technology Pte. Ltd. Boon Keng Road #02-15 Kallang Ind. Estates Singapore 1233 Phone: 65-293-5322 FAX: 65-292-0398 TAIWAN Linear Technology Corporation 801, Sec. Chung Shan Taipei, Taiwan, R.O.C. Phone: 886-2-521-7575 FAX: 886-2-562-2285 UNITED KINGDOM Linear Technology (UK) Ltd. Coliseum, Riverside Camberley, Surrey GU15 United Kingdom Phone: 44-276-677676 FAX: 44-276-64851
World Headquarters
Linear Technology Corporation 1630 McCarthy Blvd. Milpitas, 95035-7487 Phone: (408) 432-1900 FAX: (408) 434-0507
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7487
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
LT/GP 1293 PRINTED
LINEAR TECHNOLOGY CORPORATION 1993

DESCRIPTIO Supply Current 300µA 0.2µA Supply Current SHUTDOWN Pro

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