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SN74LVC244APWTG4 Datasheet(PDF) 8 Page - Texas Instruments

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Part # SN74LVC244APWTG4
Description  SN74LVC244A Octal Buffer or Driver With 3-State Outputs
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

SN74LVC244APWTG4 Datasheet(HTML) 8 Page - Texas Instruments

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background image
VM
th
tsu
From Output
Under Test
CL
(see Note A)
LOAD CIRCUIT
S1
VLOAD
Open
GND
R
R
L
L
Data Input
Timing Input
VI
0 V
VI
0 V
0 V
t
Input
w
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOLTAGE WAVEFORMS
PULSE DURATION
tPLH
tPHL
tPHL
tPLH
VOH
VOH
VOL
VOL
VI
0 V
Input
Output
Waveform 1
S1 at VLOAD
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VOL
VOH
tPZL
tPZH
tPLZ
tPHZ
VLOAD/2
0 V
VOL + V
VOH − V
≈0 V
VI
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
Output
Output
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
VLOAD
GND
TEST
S1
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR≤ 10 MHz, ZO = 50 Ω.
D. The outputs are measured one at a time, with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. t PZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
H. All parameters and waveforms are not applicable to all devices.
Output
Control
V
V
V
V
V
V
V
V
V
V
V
V
V
M
M
M
M
M
M
M
M
M
M
M
M
I
VM
VM
1.5 V
1.8 V ± 0.15 V
2.5 V ± 0.2 V
2.7 V
3.3 V ± 0.3 V
2 kΩ
1 kΩ
500 Ω
500 Ω
500 Ω
VCC
RL
2 × VCC
2 × VCC
2 × VCC
6 V
6 V
VLOAD
CL
15 pF
30 pF
30 pF
50 pF
50 pF
0.1 V
0.15 V
0.15 V
0.3 V
0.3 V
V
V
CC
VCC
VCC
2.7 V
2.7 V
V
V
I
CC/2
VCC/2
VCC/2
1.5 V
1.5 V
VM
t /t
r f
≤2 ns
≤2 ns
≤2 ns
≤2.5 ns
≤2.5 ns
INPUTS
8
SN74LVC244A
SCAS414AA – NOVEMBER 1992 – REVISED JUNE 2016
www.ti.com
Product Folder Links: SN74LVC244A
Submit Documentation Feedback
Copyright © 1992–2016, Texas Instruments Incorporated
7 Parameter Measurement Information
Figure 3. Load Circuit and Voltage Waveforms


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