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74VHC123AN Datasheet

  • 74VHC123AN

  • Dual Retriggerable Monostable Multivibrator

  • 9頁(yè)

  • FAIRCHILD

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74VHC123A Dual Retriggerable Monostable Multivibrator
July 1993
Revised April 1999
74VHC123A
Dual Retriggerable Monostable Multivibrator
General Description
The VHC123A is an advanced high speed CMOS
Monostable Multivibrator fabricated with silicon gate CMOS
technology. It achieves the high speed operation similar to
equivalent Bipolar Schottky TTL while maintaining the
CMOS low power dissipation. Each multivibrator features
both a negative, A, and a positive, 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 VHC123A can be triggered on the positive
transition of the clear while A is held low and B is held high.
The output pulse width is determined by the equation:
PW
=
(R
x
)(C
x
); where PW is in seconds, R is in ohms, and
C is in farads.
Limits for R
x
and C
x
are:
External capacitor, C
x
No limit
External resistors, R
x
V
CC
>
3.0V, 1 k鈩?min
V
CC
=
2.0V, 5 k鈩?min
An input protection circuit ensures that 0 to 7V can be
applied to the input pins without regard to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery back up. This cir-
cuit prevents device destruction due to mismatched supply
and input voltages.
Features
s
High Speed:
t
PD
=
8.1 ns (typ) at T
A
=
25擄C
s
Low Power Dissipation:
I
CC
=
4
碌A(chǔ)
(Max) at T
A
=
25擄C
s
Active State: I
CC
=
600
碌A(chǔ)
(Max) at T
A
=
25擄C
s
High Noise Immunity: V
NIH
=
V
NIL
=
28% V
CC
(min)
s
Power down protection is provided on all inputs
s
Pin and function compatible with 74HC123A
Ordering Code:
Order Number
74VHC123AM
74VHC123ASJ
74VHC123AMTC
74VHC123AN
Package Number
M16A
M16D
MTC16
N16E
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150鈥?Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300鈥?Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Logic Symbol
IEEE/IEC
Connection Diagram
漏 1999 Fairchild Semiconductor Corporation
DS011621.prf
www.fairchildsemi.com

74VHC123AN 產(chǎn)品屬性

  • 25

  • 集成電路 (IC)

  • 邏輯 - 多頻振蕩器

  • 74VHC

  • 單穩(wěn)態(tài)

  • 2

  • 無(wú)

  • 8.1ns

  • 8mA，8mA

  • 2 V ~ 5.5 V

  • -40°C ~ 85°C

  • 通孔

  • 16-DIP（0.300"，7.62mm）

  • 16-DIP

  • 管件

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