74F862 查看數據表（PDF） - Philips Electronics
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74F862 Datasheet PDF : 12 Pages
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Philips Semiconductors
Bus transceivers (3-State)
Product specification
74F862, 74F863
AC WAVEFORMS
An, Bn
Bn, An
VM
VM
tPLH
VM
tPHL
VM
SF00202
Waveform 1. Propagation Delay for Non-inverting Output
An or Bn
VM
VM
Bn or An
tPLH
VM
tPHL
VM
SF00534
Waveform 2. Propagation Delay for Inverting Output
NOTE: For all waveforms, VM = 1.5V.
OEBAn
OEABn
An, Bn
VM
tPZH
VM
tPHZ
VM
VOH –0.3 V
0V
SF00535
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
OEBAn
OEABn
An, Bn
VM
tPZL
VM
tPLZ
VM
VOL +0.3 V
SF00536
Waveform 4. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
TEST CIRCUITS AND WAVEFORMS
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
7.0V
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
SF00128
2000 Mar 24
8
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