74ABT16543 查看數據表（PDF） - Philips Electronics
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74ABT16543 Datasheet PDF : 12 Pages
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Philips Semiconductors
16-bit latched transceivers with dual enable
(3-State)
Product specification
74ABT16543
74ABTH16543
AC WAVEFORMS (Continued)
VM = 1.5V, VIN = GND to 3.0V
ÉÉÉ ÉÉÉÉÉÉÉÉÉÉ nAx,nBx
VM
ÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ts(H)
VM
th(H)
VM
VM
ts(L)
th(L)
nLEAB, nLEBA,
nEAB, nEBA
VM
tw(L)
VM
NOTE: The shaded areas indicate when the input is permitted
to change for predictable output performance.
SH00042
Waveform 3. Data Setup and Hold Times and Latch Enable
Pulse Width
nOEAB, nOEBA,
nEAB, nEBA
VM
tPZL
VM
tPLZ
nAx, nBx
VM
VOL +0.3V
VOL
SH00044
Waveform 5. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
nOEAB, nOEBA,
nEAB, nEBA
nAx, nBx
VM
tPZH
VM
tPHZ
VM
VOH
VOH –0.3V
0V
SH00043
Waveform 4. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
TEST CIRCUIT AND WAVEFORMS
VCC
VIN
VOUT
RL
PULSE
D.U.T.
GENERATOR
RT
CL
RL
Test Circuit for 3-State Outputs
SWITCH POSITION
TEST SWITCH
tPLZ
closed
tPZL
closed
All other open
7.0V
90%
NEGATIVE
PULSE
POSITIVE
PULSE
10%
VM
10%
tW
VM
10%
tTHL (tF)
tTLH (tR)
90%
VM
90%
VM
tW
VM = 1.5V
Input Pulse Definition
90%
AMP (V)
0V
tTLH (tR)
tTHL (tF)
AMP (V)
10%
0V
DEFINITIONS
RL = Load resistor; see AC CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
FAMILY
INPUT PULSE REQUIREMENTS
Amplitude Rep. Rate tW
tR
tF
74ABT/H16
3.0V
1MHz 500ns 2.5ns 2.5ns
SA00018
1998 Feb 27
8
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