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54LS174LMQB Folha de dados(PDF) 2 Page - Texas Instruments

Nome de Peças 54LS174LMQB
Descrição Electrónicos  These positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

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TLF6404
June 1989
54LS174DM54LS174DM74LS174
54LS175DM54LS175DM74LS175
HexQuad D Flip-Flops with Clear
General Description
These positive-edge-triggered flip-flops utilize TTL circuitry
to implement D-type flip-flop logic All have a direct clear
input and the quad (175) versions feature complementary
outputs from each flip-flop
Information at the D inputs meeting the setup time require-
ments is transferred to the Q outputs on the positive-going
edge of the clock pulse Clock triggering occurs at a particu-
lar voltage level and is not directly related to the transition
time of the positive-going pulse When the clock input is at
either the high or low level the D input signal has no effect
at the output
Features
Y
LS174 contains six flip-flops with single-rail outputs
Y
LS175 contains four flip-flops with double-rail outputs
Y
Buffered clock and direct clear inputs
Y
Individual data input to each flip-flop
Y
Applications include
Bufferstorage registers
Shift registers
Pattern generators
Y
Typical clock frequency 40 MHz
Y
Typical power dissipation per flip-flop 14 mW
Y
Alternate
MilitaryAerospace
device
(54LS174
54LS175) is available Contact a National Semiconduc-
tor Sales OfficeDistributor for specifications
Connection Diagrams
Dual-In-Line Package
TLF6404 – 1
Order Number 54LS174DMQB 54LS174FMQB
54LS174LMQB DM54LS174J
DM54LS174W DM74LS174M or DM74LS174N
See NS Package Number E20A J16A
M16A N16E or W16A
Dual-In-Line Package
TLF6404 – 2
Order Number 54LS175DMQB 54LS175FMQB
54LS175LMQB DM54LS175J
DM54LS175W DM74LS175M or DM74LS175N
See NS Package Number E20A J16A
M16A N16E or W16A
Function Table (Each Flip-Flop)
Inputs
Outputs
Clear
Clock
D
Q
Q
LX
X
L
H
H
u
HH
L
H
u
LL
H
HL
X
Q0
Q0
H e High Level (steady state)
L e Low Level (steady state)
X e Don’t Care
u e Transition from low to high level
Q0 e The level of Q before the indicated steady-state input conditions were
established
e
LS175 only
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A


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