Dual retriggerable monostable multivibrator with reset Rev. Novem

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Dual retriggerable monostable multivibrator with reset Rev. Novem

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74LV123
Dual retriggerable monostable multivibrator with reset
Rev. November 2007 Product data sheet
74LV123 low-voltage Si-gate CMOS device function compatible with 74HC123; 74HCT123. dual retriggerable monostable multivibrator which uses three methods control output pulse width: basic pulse time programmed selection external resistor (REXT) capacitor (CEXT). These normally connected shown Figure Once triggered, basic output pulse width extended retriggering gated active LOW-going edge input (nA) active HIGH-going edge input (nB). repeating this process, output pulse period HIGH, LOW) made long desired (see Figure 12). Alternatively, output delay terminated time LOW-going edge input nRD, which also inhibits triggering (see Figure 13). Schmitt-trigger action inputs makes circuit highly tolerant slower input rise fall times.
Features
Optimized low-voltage applications: Accepts input levels between Typical output ground bounce: Tamb Typical HIGH-level output voltage (VOH) undershoot: Tamb triggered from active HIGH active inputs Retriggerable very long pulses duty factor Direct reset terminates output pulses Schmitt-trigger action inputs except reset input
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Ordering information
Table Ordering information Package Temperature range Name 74LV123N 74LV123D 74LV123DB 74LV123PW 74LV123BQ +125 +125 +125 +125 +125 DIP16 SO16 SSOP16 TSSOP16 Description plastic dual in-line package; leads (300 mil) plastic small outline package; leads; body width Version SOT38-4 SOT109-1 Type number
plastic shrink small outline package; leads; body width SOT338-1 plastic thin shrink small outline package; leads; body width SOT403-1
DHVQFN16 plastic dual in-line compatible thermal enhanced very thin SOT763-1 quad flat package; leads; terminals; body 0.85
Functional diagram
1CEXT 2CEXT 1REXT/CEXT 2REXT/CEXT
001aae521
001aae522
Logic symbol
logic symbol
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
1CEXT 1REXT/CEXT
2CEXT 2REXT/CEXT
001aaa610
Functional diagram
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
nREXT/CEXT
001aae524
Logic diagram
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Pinning information
Pinning
74LV123
terminal index area 1REXT/CEXT 1CEXT VCC(1) 1REXT/CEXT 1CEXT
001aag678
74LV123
2CEXT 2REXT/CEXT
2CEXT 2REXT/CEXT
001aag650
Transparent view
substrate attached this using conductive attach material. cannot used supply input.
configuration DIP16, SO16, SSOP16 TSSOP16
configuration DHVQFN16
description
Table Symbol 2CEXT 2REXT/CEXT 1CEXT 1REXT/CEXT description Description negative-edge triggered input positive-edge triggered input direct reset positive-edge triggered input active output active HIGH output external capacitor connection external resistor capacitor connection ground negative-edge triggered input positive-edge triggered input direct reset positive-edge triggered input active output active HIGH output external capacitor connection external resistor capacitor connection supply voltage
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Functional description
Table Input
Function table[1] Output L[2] L[2] H[2] H[2]
HIGH voltage level; voltage level; don't care; LOW-to-HIGH transition; HIGH-to-LOW transition; HIGH level output pulse level output pulse
monostable multivibrator triggered before this condition established, pulse will continue programmed.
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Limiting values
Table Limiting values accordance with Absolute Maximum Rating System (IEC 60134). Voltages referenced (ground Symbol IGND Tstg Ptot Parameter supply voltage input clamping current output clamping current output current supply current ground current storage temperature total power dissipation Tamb +125 DIP16 package SO16 package SSOP16 package TSSOP16 package DHVQFN16 package
Conditions -0.5 -0.5 except pins nREXT/CEXT; -0.5 (VCC
-0.5
+150
Unit
input output voltage ratings exceeded input output current ratings observed. DIP16 package: Ptot derates linearly with mW/K above SO16 package: Ptot derates linearly with mW/K above SSOP16 TSSOP16 packages: Ptot derates linearly with mW/K above DHVQFN16 package: Ptot derates linearly with mW/K above
Recommended operating conditions
Table Symbol Tamb Recommended operating conditions Parameter supply voltage input voltage output voltage ambient temperature input transition rise fall rate[2] free
Conditions
+125
Unit ns/V ns/V ns/V ns/V
74LV123 guaranteed function down (input levels VCC); Section "Static characteristics" guaranteed from Except Schmitt-trigger inputs
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Static characteristics
Table Static characteristics recommended operating conditions; voltages referenced (ground Symbol Parameter Tamb HIGH-level input voltage LOW-level input voltage HIGH-level output voltage -100 -100 -100 -100 -100 LOW-level output voltage input leakage current supply current additional supply current input capacitance HIGH-level input voltage LOW-level input voltage
74LV123_5
Conditions
2.40 3.60
Typ[1] 2.82 4.20 0.25 0.35 0.40 0.55 20.0
Unit
GND; GND;
Tamb +125
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Table Static characteristics .continued recommended operating conditions; voltages referenced (ground Symbol Parameter HIGH-level output voltage Conditions -100 -100 -100 -100 -100 LOW-level output voltage
Typ[1] 0.65
Unit
input leakage current supply current additional supply current
GND; GND;
typical values measured Tamb
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Dynamic characteristics
Table Dynamic characteristics test circuit Figure Symbol Parameter Conditions Propagation delay; Figure propagation delay nRD, (reset) Inputs nRD; Figure pulse width HIGH LOW; Figure trtrig retrigger time Figure
+125 Unit
Typ[1]
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Table Dynamic characteristics .continued test circuit Figure Symbol Parameter Conditions Outputs; HIGH, Figure pulse width CEXT REXT CEXT REXT External components REXT external resistance Figure CEXT external capacitance Figure Dynamic power dissipation power dissipation capacitance
[3][4]
+125 Unit
Typ[1]
1000 1000 1000 1000 1000
typical values measured Tamb nominal supply values (VCC same tPLH tPHL; CEXT REXT other REXT CEXT combinations Figure Section 12.1.1 "Basic timing". CEXT limits. used determine dynamic power dissipation µW). VCC2 VCC2 where: input frequency MHz; output frequency MHz; output load capacitance supply voltage number inputs switching; VCC2 outputs.
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Waveforms
input LOW)
input HIGH)
RESET
input tPLH output tPLH
tPHL
tPLH
output
tPHL tPHL tPLH tPHL
001aae528
Measurement points given Table
Propagation delays from inputs (nA, nRD) outputs (nQ, Table Measurement points
PULSE GENERATOR
001aae533
Test data given Table Definitions test circuit: Load resistance. Load capacitance including probe capacitance. Termination resistance should equal pulse generator.
Load circuitry switching times
74LV123_5 B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Test data Input Load tPHL, tPLH tPHL, tPLH tPHL, tPLH Test
Table
Supply voltage
Application information
12.1 Timing components
12.1.1 Basic timing
basic output pulse width essentially determined values external timing components REXT CEXT.
CEXT
REXT
nCEXT nREXT/CEXT
74LV123
(10)
(12)
(11)
001aae525
minimum noise generation recommended ground pins (2CEXT) (1CEXT) externally (GND).
Timing components connections
CEXT following formula valid: REXT CEXT (typ.) where: output pulse width REXT external resistor CEXT external capacitor constant: this 0.45 0.48 (see Figure inherent test capacitance (nREXT/CEXT) approximately
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
factor
001aae529
(ns) REXT
001aae530
Cext (pF)
CEXT REXT
Tamb
Typical factor function
Typical output pulse width function external capacitance values
12.1.2 Retrigger timing
time retrigger monostable multivibrator depends values REXT CEXT. output pulse width will only extended when time between active going edges trigger pulses meets minimum retrigger time. CEXT next formula set-up time retrigger pulse valid: trtrig 0.19REXT CEXT0.9 REXT1.05 (typ.) trtrig 0.15REXT CEXT0.9 REXT (typ.) where: trtrig retrigger time CEXT external capacitor REXT external resistor
input input trtrig
output
001aae526
HIGH
Output pulse control using retrigger pulse
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
12.1.3 Reset timing
input
input
output
001aae527
Output pulse control using reset input
12.2 Power considerations
12.2.1 Power-up
When monostable multivibrator powered-up, produce output pulse with pulse width defined values REXT CEXT. This output pulse eliminated using circuit shown Figure
12.2.2 Power-down
large capacitor (CEXT) cause problems when powering-down monostable energy stored this capacitor. When system containing this device powered-down rapid decrease zero occurs, monostable sustain damage, capacitor discharging through input protection diodes. avoid this possibility, connect damping diode DEXT (preferably germanium Schottky type diode) able withstand large current surges Figure
DEXT CEXT
REXT
nCEXT nREXT/CEXT
74LV123
(10)
(12)
(11) RESET
001aae532
Power-up power-down circuit
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Package outline
DIP16: plastic dual in-line package; leads (300 mil) SOT38-4
seating plane
index
scale
DIMENSIONS (inch dimensions derived from original dimensions) UNIT inches max. 0.17 min. 0.51 0.02 max. 0.13 1.73 1.30 0.068 0.051 0.53 0.38 0.021 0.015 1.25 0.85 0.049 0.033 0.36 0.23 0.014 0.009 19.50 18.55 0.77 0.73 6.48 6.20 0.26 0.24 2.54 7.62 3.60 3.05 0.14 0.12 8.25 7.80 0.32 0.31 10.0 0.39 0.33 0.254 0.01 max. 0.76 0.03
Note Plastic metal protrusions 0.25 (0.01 inch) maximum side included. OUTLINE VERSION SOT38-4 REFERENCES JEDEC JEITA EUROPEAN PROJECTION
ISSUE DATE 95-01-14 03-02-13
Package outline SOT38-4 (DIP16)
74LV123_5 B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
SO16: plastic small outline package; leads; body width
SOT109-1
index detail
scale
DIMENSIONS (inch dimensions derived from original dimensions) UNIT inches Note Plastic metal protrusions 0.15 (0.006 inch) maximum side included. OUTLINE VERSION SOT109-1 REFERENCES 076E07 JEDEC MS-012 JEITA EUROPEAN PROJECTION max. 1.75 0.25 0.10 1.45 1.25 0.25 0.01 0.49 0.36 0.25 0.19 10.0 0.16 0.15 1.27 0.05 1.05 0.039 0.016 0.028 0.020 0.25 0.01 0.25 0.01
0.010 0.057 0.069 0.004 0.049
0.019 0.0100 0.39 0.014 0.0075 0.38
0.244 0.041 0.228
0.028 0.004 0.012
ISSUE DATE 99-12-27 03-02-19
Package outline SOT109-1 (SO16)
74LV123_5 B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
SSOP16: plastic shrink small outline package; leads; body width
SOT338-1
index detail
scale
DIMENSIONS original dimensions) UNIT max. 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 0.65 1.25 1.03 0.63 0.13 1.00 0.55
Note Plastic metal protrusions 0.25 maximum side included. OUTLINE VERSION SOT338-1 REFERENCES JEDEC MO-150 JEITA EUROPEAN PROJECTION
ISSUE DATE 99-12-27 03-02-19
Package outline SOT338-1 (SSOP16)
74LV123_5 B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
TSSOP16: plastic thin shrink small outline package; leads; body width
SOT403-1
index
detail
scale
DIMENSIONS original dimensions) UNIT max. 0.15 0.05 0.95 0.80 0.25 0.30 0.19 0.65 0.75 0.50 0.13 0.40 0.06
Notes Plastic metal protrusions 0.15 maximum side included. Plastic interlead protrusions 0.25 maximum side included. OUTLINE VERSION SOT403-1 REFERENCES JEDEC MO-153 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-18
Package outline SOT403-1 (TSSOP16)
74LV123_5 B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; leads; SOT763-1 terminals; body 0.85
terminal index area
detail
terminal index area
scale
DIMENSIONS original dimensions) UNIT A(1) max. 0.05 0.00 0.30 0.18 2.15 1.85 1.15 0.85 0.05 0.05
Note Plastic metal protrusions 0.075 maximum side included. OUTLINE VERSION SOT763-1 REFERENCES -JEDEC MO-241 JEITA -EUROPEAN PROJECTION ISSUE DATE 02-10-17 03-01-27
Package outline SOT736-1 (DHVQFN16)
74LV123_5 B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Revision history
Table 74LV123_5 Modifications: 74LV123_4 74LV123_3 74LV123_2 74LV123_1 Revision history Release date 20071108 Data sheet status Product data sheet Product specification Product specification Product specification Product specification Change notice Supersedes 74LV123_4 74LV123_3 74LV123_2 74LV123_1 Document
Changed: SOT38-1 changed into SOT38-4
20070919 20030313 19980420 19970204
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Legal information
15.1 Data sheet status
Document status[1][2] Objective [short] data sheet Preliminary [short] data sheet Product [short] data sheet
Product status[3] Development Qualification Production
Definition This document contains data from objective specification product development. This document contains data from preliminary specification. This document contains product specification.
Please consult most recently issued document before initiating completing design. term `short data sheet' explained section "Definitions". product status device(s) described this document have changed since this document published differ case multiple devices. latest product status information available Internet http://www.nxp.com.
15.2 Definitions
Draft document draft version only. content still under internal review subject formal approval, which result modifications additions. Semiconductors does give representations warranties accuracy completeness information included herein shall have liability consequences such information. Short data sheet short data sheet extract from full data sheet with same product type number(s) title. short data sheet intended quick reference only should relied upon contain detailed full information. detailed full information relevant full data sheet, which available request local Semiconductors sales office. case inconsistency conflict with short data sheet, full data sheet shall prevail.
malfunction Semiconductors product reasonably expected result personal injury, death severe property environmental damage. Semiconductors accepts liability inclusion and/or Semiconductors products such equipment applications therefore such inclusion and/or customer's risk. Applications Applications that described herein these products illustrative purposes only. Semiconductors makes representation warranty that such applications will suitable specified without further testing modification. Limiting values Stress above more limiting values defined Absolute Maximum Ratings System 60134) cause permanent damage device. Limiting values stress ratings only operation device these other conditions above those given Characteristics sections this document implied. Exposure limiting values extended periods affect device reliability. Terms conditions sale Semiconductors products sold subject general terms conditions commercial sale, published including those pertaining warranty, intellectual property rights infringement limitation liability, unless explicitly otherwise agreed writing Semiconductors. case inconsistency conflict between information this document such terms conditions, latter will prevail. offer sell license Nothing this document interpreted construed offer sell products that open acceptance grant, conveyance implication license under copyrights, patents other industrial intellectual property rights.
15.3 Disclaimers
General Information this document believed accurate reliable. However, Semiconductors does give representations warranties, expressed implied, accuracy completeness such information shall have liability consequences such information. Right make changes Semiconductors reserves right make changes information published this document, including without limitation specifications product descriptions, time without notice. This document supersedes replaces information supplied prior publication hereof. Suitability Semiconductors products designed, authorized warranted suitable medical, military, aircraft, space life support equipment, applications where failure
15.4 Trademarks
Notice: referenced brands, product names, service names trademarks property their respective owners.
Contact information
additional information, please visit: http://www.nxp.com sales office addresses, send email salesaddresses@nxp.com
74LV123_5
B.V. 2007. rights reserved.
Product data sheet
Rev. November 2007
Semiconductors
74LV123
Dual retriggerable monostable multivibrator with reset
Contents
12.1 12.1.1 12.1.2 12.1.3 12.2 12.2.1 12.2.2 15.1 15.2 15.3 15.4 General description Features Ordering information Functional diagram Pinning information Pinning description Functional description Limiting values. Recommended operating conditions. Static characteristics. Dynamic characteristics Waveforms Application information. Timing components Basic timing Retrigger timing Reset timing Power considerations Power-up. Power-down Package outline Revision history Legal information. Data sheet status Definitions Disclaimers Trademarks Contact information. Contents
Please aware that important notices concerning this document product(s) described herein, have been included section `Legal information'.
B.V. 2007.
rights reserved.
more information, please visit: http://www.nxp.com sales office addresses, please send email salesaddresses@nxp.com Date release: November 2007 Document identifier: 74LV123_5

Dual retriggerable monostable multivibrator with reset Rev. Novem

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