74LVT543 데이터 시트보기 (PDF) - Philips Electronics
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74LVT543 Datasheet PDF : 12 Pages
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Philips Semiconductors
3.3V Octal latched transceiver with dual enable
(3-State)
Product specification
74LVT543
ÉÉÉ ÉÉÉÉÉÉÉÉÉÉ An,
Bn
1.5V 1.5V
ÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ts(H)
th(H)
1.5V 1.5V
ts(L)
th(L)
2.7V
0V
LEAB, LEBA,
EAB, EBA
1.5V
tw(L)
1.5V
2.7V
0V
NOTE: The shaded areas indicate when the input is permitted
to change for predictable output performance.
SV00114
Waveform 3. Data Setup and Hold Times And Latch Enable
Pulse Width
OEAB, OEBA,
EAB, EBA
An, Bn
1.5V
1.5V
tPZL
tPLZ
1.5V
2.7V
0V
3.0V
VOL+0.3V
VOL
SV00116
Waveform 5. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
OEAB, OEBA,
EAB, EBA
An, Bn
1.5V
1.5V
tPZH
1.5V
tPHZ
2.7V
0V
VOH
VOH–0.3V
0V
SV00115
Waveform 4. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
TEST CIRCUIT AND WAVEFORM
VCC
PULSE
GENERATOR
VIN
RT
D.U.T.
VOUT
CL
Test Circuit for 3-State Outputs
SWITCH POSITION
TEST SWITCH
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
6V
GND
6.0V
Open
90%
RL
GND
NEGATIVE
PULSE
RL
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
74LVT
INPUT PULSE REQUIREMENTS
Amplitude Rep. Rate tW
tR
tF
2.7V
v10MHz 500ns v2.5ns v2.5ns
SV00092
1998 Feb 19
7
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