N74F543DB 查看數據表（PDF） - Philips Electronics
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N74F543DB Datasheet PDF : 12 Pages
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Philips Semiconductors
Octal registered transceiver, non-inverting (3-State)
Product data sheet
74F543
AC WAVEFORMS
VM = 1.5 V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
VIN
VOUT
VM
tPLH
VM
tPHL
VM
VM
OEAB, OEBA
EAB, EBA
An, Bn
VM
tPZH
VM
tPHZ
VM
VOH – 0.3 V
0V
SF00246
Waveform 1. Propagation delay for non-inverting outputs
SF00248
Waveform 3. 3-State Output Enable Time to HIGH Level and
Output Disable Time from HIGH Level
An
Bn
VM
ts(H)
LEAB, LEBA
EAB, EBA
VM
VM
VM
th(H) ts(L)
tw(L)
VM
th(L)
VM
SF00247
Waveform 2. Data Setup Time and Hold Times, and Latch
Enable Pulse Width
TEST CIRCUIT AND WAVEFORMS
OEAB, OEBA
EAB, EBA
An, Bn
VM
tPZL
VM
tPLZ
VM
VOL + 0.3 V
SF00249
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 Open Collector Outputs
SWITCH POSITION
TEST
tPLZ
tPZL
All other
SWITCH
closed
closed
open
7.0 V
NEGATIVE
PULSE
90%
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
3.0 V 1.5 V 1 MHz 500 ns 2.5 ns
tTHL
2.5 ns
SF00128
2004 Jul 22
8
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