参数资料
型号: SN74LVC2G74DCU
厂商: TEXAS INSTRUMENTS INC
元件分类: 锁存器
英文描述: LVC/LCX/Z SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO8
封装: PLASTIC, TSSOP-8
文件页数: 5/9页
文件大小: 135K
代理商: SN74LVC2G74DCU
SN74LVC2G74
SINGLE POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP
WITH CLEAR AND PRESET
SCES203B – APRIL 1999 – REVISED FEBRUARY 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
operating characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
VCC = 1.8 V VCC = 2.5 V VCC = 3.3 V
VCC = 5 V
UNIT
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
f = 10 MHz
pF
PARAMETER MEASUREMENT INFORMATION
VCC = 1.8 V ± 0.15 V
VCC/2
VOH
VOL
th
tsu
From Output
Under Test
CL = 30 pF
(see Note A)
LOAD CIRCUIT
S1
Open
GND
1 k
1 k
Output
Control
Output
Waveform 1
S1 at 2
× VCC
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
tPZL
tPZH
tPLZ
tPHZ
0 V
VOL + 0.15 V
VOH – 0.15 V
0 V
VCC
0 V
tw
VCC
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
Timing
Input
Data
Input
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
2
× VCC
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 , tr ≤ 2 ns, tf ≤ 2 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.
0 V
VCC
VCC/2
tPHL
VCC/2
VCC
0 V
VOH
VOL
Input
Output
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VCC/2
tPLH
2
× VCC
VCC
Figure 1. Load Circuit and Voltage Waveforms
PRODUCT
PREVIEW
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