SN54AHC123A, SN74AHC123A
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS
SCLS352G 鈥?JULY 1997 鈥?REVISED APRIL 2003
D
D
D
D
D
D
D
D
description/ordering information
The 鈥橝HC123A 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.
1B
1A
NC
V
CC
1R
ext
/C
ext
1CLR
1Q
NC
2Q
2C
ext
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
Operating Range 2-V to 5.5-V V
CC
Schmitt-Trigger Circuitry On A, B, and CLR
Inputs for Slow Input Transition Rates
Edge Triggered From Active-High or
Active-Low Gated Logic Inputs
Retriggerable for Very Long Output Pulses
Overriding Clear Terminates Output Pulse
Glitch-Free Power-Up Reset On Outputs
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection Exceeds JESD 22
鈥?2000-V Human-Body Model (A114-A)
鈥?200-V Machine Model (A115-A)
鈥?1000-V Charged-Device Model (C101)
SN54AHC123A . . . J OR W PACKAGE
SN74AHC123A . . . D, DB, DGV, N, OR PW PACKAGE
(TOP VIEW)
1A
1B
1CLR
1Q
2Q
2C
ext
2R
ext
/C
ext
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
1R
ext
/C
ext
1C
ext
1Q
2Q
2CLR
2B
2A
SN54AHC123A . . . FK PACKAGE
(TOP VIEW)
1C
ext
1Q
NC
2Q
2CLR
NC 鈥?No internal connection
ORDERING INFORMATION
TA
PDIP 鈥?N
SOIC 鈥?D
鈥?0擄C to 85擄C
40擄C
SSOP 鈥?DB
TSSOP 鈥?PW
TVSOP 鈥?DGV
CDIP 鈥?J
鈥?5擄C to 125擄C
CFP 鈥?W
LCCC 鈥?FK
PACKAGE鈥?/div>
Tube
Tube
Tape and reel
Tape and reel
Tape and reel
Tape and reel
Tube
Tube
Tube
ORDERABLE
PART NUMBER
SN74AHC123AN
SN74AHC123AD
SN74AHC123ADR
SN74AHC123ADBR
SN74AHC123APWR
SN74AHC123ADGVR
SNJ54AHC123AJ
SNJ54AHC123AW
SNJ54AHC123AFK
TOP-SIDE
MARKING
SN74AHC123AN
AHC123A
HA123A
HA123A
HA123A
SNJ54AHC123AJ
SNJ54AHC123AW
SNJ54AHC123AFK
鈥?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.
Copyright
錚?/div>
2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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
鈥?/div>
DALLAS, TEXAS 75265
2R
ext
/C
ext
GND
NC
2A
2B
1
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