74F674 查看數據表（PDF） - Philips Electronics
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74F674 Datasheet PDF : 5 Pages
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Philips Semiconductors
16-bit serial/parallel-in, serial-out shift register (3-State)
Product specification
74F674
AC WAVEFORMS
For all waveforms, VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
CP
SI/O
1/fMAX
VM
tW(L)
tPLH
VM
tW(H)
VM
VM
tPHL
VM
SF01192
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
Dn, CS,
M, R/W,
SI/O
CP
VM
VM
ts(H) th(H)
VM
VM VM
ts(L) th(L)
VM
Waveform 2. Setup and Hold Times
SF01193
CS, R/W
SI/O
VM
tPZH
VM
VM
tPHZ
VOH -0.3V
0V
SF01194
Waveform 3. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
TEST CIRCUIT AND WAVEFORM
CS, R/W
VM
VM
tPZL
tPLZ
SI/O
VM
VOL +0.3V
SF01195
Waveform 4. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
VCC
VIN
PULSE
GENERATOR
VOUT
RL
D.U.T.
RT
CL RL
Test Circuit for 3-State Outputs
SWITCH POSITION
TEST
tPLZ
tPZL
All other
SWITCH
closed
closed
open
7.0V
90%
NEGATIVE
PULSE
POSITIVE
PULSE
10%
tw
VM
10%
tTHL (tf )
VM
10%
tTLH (tr )
tTLH (tr )
90%
VM
tw
tTHL (tf )
90%
VM
Input Pulse Definition
90%
AMP (V)
0V
AMP (V)
10%
0V
DEFINITIONS:
RL = Load resistor;
see AC electrical characteristics for value.
CL = Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
INPUT PULSE REQUIREMENTS
family
amplitude VM rep. rate
tw
tTLH
74F
3.0V 1.5V 1MHz 500ns 2.5ns
tTHL
2.5ns
SF00777
1989 Feb 05
5
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