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參數(shù)資料
| 型號(hào)： | SN54HCT273W |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 4.27V Voltage Detector with Active Low Open Collector Output for 5V Systems - Pb Free Device; Package: TO-92 (TO-226) 5.33mm Body Height; No of Pins: 3; Container: Tape and Reel; Qty per Container: 2000 |
| 中文描述： | 八路D型倒裝，沒有明確的觸發(fā)器 |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大?。?/td> | 114K |
| 代理商： | SN54HCT273W |
SN54HCT273, SN74HCT273
OCTAL D-TYPE FLIP-FLOPS
WITH CLEAR
SCLS068C – NOVEMBER 1988 – REVISED MAY 1997
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
operating characteristics, V
CC
= 5 V, T
A
= 25
°
C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load
30
pF
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORMS
SETUP AND HOLD AND INPUT RISE AND FALL TIMES
VOLTAGE WAVEFORMS
PULSE DURATIONS
th
tsu
1.3 V
1.3 V
0.3 V
1.3 V
0.3 V
2.7 V
2.7 V
3 V
3 V
0 V
0 V
tr
tf
Reference
Input
Data
Input
1.3 V
High-Level
Pulse
1.3 V
3 V
0 V
1.3 V
1.3 V
3 V
0 V
tw
Low-Level
Pulse
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT RISE AND FALL TIMES
1.3 V
1.3 V
10%
1.3 V
10%
90%
90%
3 V
VOH
VOL
0 V
tr
tf
Input
In-Phase
Output
1.3 V
tPLH
tPHL
1.3 V
10%
1.3 V
10%
90%
90%
VOH
VOL
tr
tf
tPHL
tPLH
Out-of-
Phase
Output
Test
Point
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
NOTES: A. CL includes probe and test-fixture capacitance.
B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR
≤
1 MHz, ZO = 50
, tr = 6 ns, tf = 6 ns.
C. The outputs are measured one at a time with one input transition per measurement.
D. For clock inputs, fmax is measured when the input duty cycle is 50%.
E. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
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