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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 114K |
| 代理商： | SN54HCT273W |
SN54HCT273, SN74HCT273
OCTAL D-TYPE FLIP-FLOPS
WITH CLEAR
SCLS068C – NOVEMBER 1988 – REVISED MAY 1997
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
TA = 25
°
C
MIN
0
SN54HCT273
MIN
0
SN74HCT273
MIN
0
UNIT
MAX
MAX
MAX
fl
fclock
Clock frequency
4.5 V
25
16
20
MHz
5.5 V
0
28
0
19
0
23
CLK high or low
4.5 V
20
30
25
tw
Pulse duration
5.5 V
18
25
22
ns
CLR low
4.5 V
16
24
20
5.5 V
14
20
17
Data
4.5 V
20
30
25
tsu
Setup time before CLK
↑
5.5 V
17
25
21
ns
CLR inactive
4.5 V
20
30
25
5.5 V
17
25
21
th
Hold time data after CLK
↑
4.5 V
5.5 V
0
0
0
0
0
0
ns
switching characteristics over recommended operating free-air temperature range, V
CC
= 5 V
±
0.5 V,
C
L
= 50 pF (unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
SN54HCT273
TA = 25
°
C
TYP
31
PARAMETER
(OUTPUT)
VCC
MIN
MAX
UNIT
MIN
25
MAX
fmax
4.5 V
16
MHz
5.5 V
28
37
19
td
tpd
CLR
Any
4.5 V
15
34
50
ns
5.5 V
12
29
42
tPHL
CLR
Any
4.5 V
17
15
50
ns
5.5 V
15
34
42
tt
Any
4.5 V
5.5 V
8
7
18
19
22
21
ns
switching characteristics over recommended operating free-air temperature range, V
CC
= 5 V
±
0.5 V,
C
L
= 50 pF (unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
SN74HCT273
TA = 25
°
C
TYP
31
PARAMETER
(OUTPUT)
VCC
MIN
MAX
UNIT
MIN
25
MAX
fmax
4.5 V
20
MHz
5.5 V
28
37
23
td
tpd
CLR
Any
4.5 V
15
34
42
ns
5.5 V
12
29
36
tPHL
CLR
Any
4.5 V
17
34
42
ns
5.5 V
15
29
36
tt
Any
4.5 V
5.5 V
8
7
15
14
19
17
ns
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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