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MM74HC123ASJ Datasheet(PDF) 1 Page - Rochester Electronics |
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MM74HC123ASJ Datasheet(HTML) 1 Page - Rochester Electronics |
1 / 4 page 74HC123A © 2013 Rochester Electronics, LLC. All Rights Reserved 04242013 Specification Number 74HC123-I (F) Rev C Page 1 of 4 © 2001 Fairchild Semiconductor Corporation DS005206 www.fairchildsemi.com September 1983 Revised May 2001 MM74HC123A Dual Retriggerable Monostable Multivibrator General Description The MM74HC123A high speed monostable multivibrators (one shots) utilize advanced silicon-gate CMOS technol- ogy. They feature speeds comparable to low power Schot- tky TTL circuitry while retaining the low power and high noise immunity characteristic of CMOS circuits. Each multivibrator features both a negative, A, and a posi- tive, B, transition triggered input, either of which can be used as an inhibit input. Also included is a clear input that when taken low resets the one shot. The MM74HC123A can be triggered on the positive transition of the clear while A is held LOW and B is held HIGH. The MM74HC123A is retriggerable. That is it may be trig- gered repeatedly while their outputs are generating a pulse and the pulse will be extended. Pulse width stability over a wide range of temperature and supply is achieved using linear CMOS techniques. The out- put pulse equation is simply: PW = (REXT) (CEXT); where PW is in seconds, R is in ohms, and C is in farads. All inputs are protected from damage due to static discharge by diodes to VCC and ground. Features Typical propagation delay: 25 ns Wide power supply range: 2V–6V Low quiescent current: 80 µA maximum (74HC Series) Low input current: 1 µA maximum Fanout of 10 LS-TTL loads Simple pulse width formula T = RC Wide pulse range: 400 ns to ∞ (typ) Part to part variation: ±5% (typ) Schmitt Trigger A & B inputs allow rise and fall times to be as slow as one second Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Top View Timing Component Note: Pin 6 and Pin 14 must be hard-wired to GND. Order Number Package Number Package Description MM74HC123AM M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow MM74HC123ASJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MM74HC123AMTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide MM74HC123AN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide © 2001 Fairchild Semiconductor Corporation DS005206 www.fairchildsemi.com September 1983 Revised May 2001 MM74HC123A Dual Retriggerable Monostable Multivibrator General Description The MM74HC123A high speed monostable multivibrators (one shots) utilize advanced silicon-gate CMOS technol- ogy. They feature speeds comparable to low power Schot- tky TTL circuitry while retaining the low power and high noise immunity characteristic of CMOS circuits. Each multivibrator features both a negative, A, and a posi- tive, B, transition triggered input, either of which can be used as an inhibit input. Also included is a clear input that when taken low resets the one shot. The MM74HC123A can be triggered on the positive transition of the clear while A is held LOW and B is held HIGH. The MM74HC123A is retriggerable. That is it may be trig- gered repeatedly while their outputs are generating a pulse and the pulse will be extended. Pulse width stability over a wide range of temperature and supply is achieved using linear CMOS techniques. The out- put pulse equation is simply: PW = (REXT) (CEXT); where PW is in seconds, R is in ohms, and C is in farads. All inputs are protected from damage due to static discharge by diodes to VCC and ground. Features Typical propagation delay: 25 ns Wide power supply range: 2V–6V Low quiescent current: 80 µA maximum (74HC Series) Low input current: 1 µA maximum Fanout of 10 LS-TTL loads Simple pulse width formula T = RC Wide pulse range: 400 ns to ∞ (typ) Part to part variation: ±5% (typ) Schmitt Trigger A & B inputs allow rise and fall times to be as slow as one second Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Top View Timing Component Note: Pin 6 and Pin 14 must be hard-wired to GND. Order Number Package Number Package Description MM74HC123AM M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow MM74HC123ASJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MM74HC123AMTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide MM74HC123AN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Rochester Electronics guarantees performance of its semiconductor products to the original OEM specifications. “Typical” values are for reference purposes only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves the right to make changes without further notice to any specification herein. Rochester Part Number Fairchild Part Number Package Temperature MM74HC123AN MM74HC123AN PDIP-16 -40° to +85°C MM74HC123AM MM74HC123AM SOP-16, Plastic -40° to +85°C MM74HC123AMTC MM74HC123AMTC TSSOP-16, Plastic -40° to +85°C MM74HC123ASJ MM74HC123ASJ SOP-16, Plastic -40° to +85°C Rochester Ordering Guide *Most products can also be offered as RoHS compliant, designated by a –G suffix. Please contact factory for more information. Please contact factory for specific package availability and Military/Aerospace specifications/availability. |
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