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參數(shù)資料
| 型號： | AC74 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET |
| 中文描述： | 雙上升沿觸發(fā)的，有清除和預(yù)設(shè)功能的D型觸發(fā)器 |
| 文件頁數(shù)： | 6/17頁 |
| 文件大?。?/td> | 531K |
| 代理商： | AC74 |
SCAS521F AUGUST 1995 REVISED OCTOBER 2003
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
50% VCC
50% VCC
50% VCC
50% VCC
VCC
VCC
0 V
0 V
th
tsu
VOLTAGE WAVEFORMS
Data Input
tPLH
tPHL
tPHL
tPLH
VOH
VOH
VOL
VOL
50% VCC
50% VCC
VCC
0 V
50% VCC
50% VCC
Input
Out-of-Phase
Output
In-Phase
Output
Timing Input
50% VCC
VOLTAGE WAVEFORMS
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
S1
2
×
VCC
500
500
Open
tPLH/tPHL
Open
TEST
S1
VCC
0 V
50% VCC
50% VCC
tw
VOLTAGE WAVEFORMS
Input
NOTES: A. CL includes probe and jig capacitance.
B. All input pulses are supplied by generators having the following characteristics: PRR
≤
1 MHz, ZO = 50
, tr
C. The outputs are measured one at a time with one input transition per measurement.
2.5 ns, tf
2.5 ns.
Figure 1. Load Circuit and Voltage Waveforms
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