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54AC174 Schematic ( PDF Datasheet ) - National Semiconductor

Teilenummer 54AC174
Beschreibung Hex D Flip-Flop
Hersteller National Semiconductor
Logo National Semiconductor Logo 




Gesamt 8 Seiten
54AC174 Datasheet, Funktion
www.DataSheet4U.com
July 1998
54AC174 54ACT174
Hex D Flip-Flop with Master Reset
General Description
The ’AC/’ACT174 is a high-speed hex D flip-flop. The device
is used primarily as a 6-bit edge-triggered storage register.
The information on the D inputs is transferred to storage dur-
ing the LOW-to-HIGH clock transition. The device has a
Master Reset to simultaneously clear all flip-flops.
n Outputs source/sink 24 mA
n ’ACT174 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
— ’AC174: 5962-87626
— ’ACT174: 5962-87757
Features
n ICC reduced by 50%
Logic Symbols
Pin Names
D0– D5
CP
MR
Q0– Q5
Description
Data Inputs
Clock Pulse Input
Master Reset Input
Outputs
IEEE/IEC
DS100277-1
DS100277-2
FACTis a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100277
www.national.com






54AC174 Datasheet, Funktion
AC Operating Requirements
Symbol
Parameter
ts Setup Time, HIGH or LOW
Dn to CP
th Hold Time, HIGH or LOW
Dn to CP
tw MR Pulse Width, LOW
tw CP Pulse Width, HIGH OR
LOW
trec Recovery Time
MR to CP
Note 11: Voltage Range 5.0 is 5.0V ±0.5V
Capacitance
Symbol
CIN
CPD
Parameter
Input Capacitance
Power Dissipation
Capacitance
Typ
4.5
85.0
VCC
(V)
(Note 11)
5.0
5.0
5.0
5.0
5.0
54ACT
TA = −55˚C
to +125˚C
CL = 50 pF
Guaranteed
Minimum
3.0
2.0
5.0
5.0
1.0
Units
pF
pF
Conditions
VCC = OPEN
VCC = 5.0V
Units
ns
ns
ns
ns
ns
Fig.
No.
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