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參數(shù)資料
| 型號： | SN74LV374DBLE |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | LV/LV-A/LVX/H SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | PLASTIC, SSOP-20 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 246K |
| 代理商： | SN74LV374DBLE |
SN54LV374, SN74LV374
OCTAL EDGETRIGGERED DTYPE FLIPFLOPS
WITH 3STATE OUTPUTS
SCLS197B FEBRUARY 1993 REVISED APRIL 1996
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
PARAMETER MEASUREMENT INFORMATION
Vm
th
tsu
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
S1
Vz
Open
GND
1 k
1 k
Data Input
Timing Input
Vm
Vi
0 V
Vm
Vi
0 V
Vi
0 V
Vm
tw
Input
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOLTAGE WAVEFORMS
PULSE DURATION
tPLH
tPHL
tPLH
VOH
VOL
Vm
Vi
0 V
Vm
Input
Vm
Output
Control
Output
Waveform 1
S1 at Vz
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VOL
VOH
tPZL
tPZH
tPLZ
tPHZ
Vm
0.5
× Vz
0 V
Vm
VOL + 0.3 V
Vm
VOH 0.3 V
[ 0 V
Vi
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
Output
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
Vz
GND
TEST
S1
0.5
× VCC
VCC
2
× VCC
1.5 V
2.7 V
6 V
WAVEFORM
CONDITION
VCC = 4.5 V
to 5.5 V
VCC = 2.7 V
to 3.6 V
Vm
Vi
Vz
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 , tr ≤ 2.5 ns, tf ≤ 2.5 ns.
D. The outputs are measured one at a time with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
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