SN54AHC123A_15 Datasheet, PDF (1/28 Pages) Texas Instruments – DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS

SN54AHC123A, SN74AHC123A
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS
D Operating Range 2-V to 5.5-V V_CC
D Schmitt-Trigger Circuitry On A, B, and CLR
Inputs for Slow Input Transition Rates
D Edge Triggered From Active-High or
Active-Low Gated Logic Inputs
D Retriggerable for Very Long Output Pulses
D Overriding Clear Terminates Output Pulse
D Glitch-Free Power-Up Reset On Outputs
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
− 1000-V Charged-Device Model (C101)
SCLS352H − JULY 1997 − REVISED OCTOBER 2005
SN54AHC123A . . . J OR W PACKAGE
SN74AHC123A . . . D, DB, DGV, N, OR PW PACKAGE
(TOP VIEW)
1A ₁
1B 2
1CLR 3
1Q 4
2Q 5
2C_ext 6
2R_ext/C_ext 7
GND 8
16 ^V_CC
15 1R_ext/C_ext
14 1C_ext
13 1Q
12 2Q
11 2CLR
10 2B
9 2A
SN54AHC123A . . . FK PACKAGE
(TOP VIEW)
description/ordering information
The ’AHC123A devices are dual retriggerable
monostable multivibrators designed for 2-V to
5.5-V V_CC operation.
These edge-triggered multivibrators feature
output pulse-duration control by three methods. In
the first method, the A input is low, and the B input
goes high. In the second method, the B input is
high, and the A input goes low. In the third method,
the A input is low, the B input is high, and the clear
(CLR) input goes high.
1CLR
1Q
NC
2Q
2C_ext
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
1C_ext
1Q
NC
2Q
2CLR
NC − No internal connection
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube
SN74AHC123AN
SN74AHC123AN
−40°C to 85°C
SOIC − D
SSOP − DB
Tube
Tape and reel
Tape and reel
SN74AHC123AD
SN74AHC123ADR
SN74AHC123ADBR
AHC123A
HA123A
TSSOP − PW Tape and reel SN74AHC123APWR
HA123A
TVSOP − DGV Tape and reel SN74AHC123ADGVR HA123A
CDIP − J
Tube
SNJ54AHC123AJ
SNJ54AHC123AJ
−55°C to 125°C CFP − W
Tube
SNJ54AHC123AW
SNJ54AHC123AW
LCCC − FK
Tube
SNJ54AHC123AFK
SNJ54AHC123AFK
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are}
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2005, Texas Instruments Incorporated
On products compliant to MILĆPRFĆ38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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