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參數(shù)資料
| 型號： | SN54HCT377 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal D-Type Flip-Flops With Clock Enabe(八D觸發(fā)器(帶時鐘使能)) |
| 中文描述： | 八路D類觸發(fā)器時鐘Enabe拖鞋（八?觸發(fā)器（帶時鐘使能）） |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 162K |
| 代理商： | SN54HCT377 |
SN54HCT377, SN74HCT377
OCTAL D-TYPE FLIP-FLOPS
WITH CLOCK ENABLE
SCLS067C – NOVEMBER 1988 – REVISED MAY 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Inputs Are TTL-Voltage Compatible
Contain Eight Flip-Flops With Single-Rail
Outputs
Clock Enable Latched to Avoid False
Clocking
Applications Include:
– Buffer/Storage Registers
– Shift Registers
– Pattern Generators
Package Options Include Plastic
Small-Outline (DW), and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
description
These devices are positive-edge-triggered D-type
flip-flops. The ’HCT377 are similar to the ’HCT273
but feature a latched clock-enable (CLKEN) input
instead of a common clear.
Information at the data (D) inputs meeting the
setup time requirements is transferred to the
Q outputs on the positive-going edge of the clock
(CLK) pulse if CLKEN is low. Clock triggering
occurs at a particular voltage level and is not
directly related to the transition time of the
positive-going pulse. When CLK is at either the
high or low level, the D input has no effect at the
output. These devices are designed to prevent
false clocking by transitions at CLKEN.
The SN54HCT377 is characterized for operation over the full military temperature range of –55
°
C to 125
°
C. The
SN74HCT377 is characterized for operation from –40
°
C to 85
°
C.
FUNCTION TABLE
(each flip-flop)
INPUTS
CLK
OUTPUT
Q
CLKEN
D
H
X
↑
↑
L
X
Q0
H
L
H
L
L
L
X
X
Q0
Copyright
1997, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
3
2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
8D
7D
7Q
6Q
6D
2D
2Q
3Q
3D
4D
1
1
C
5
5
V
8
4
G
C
SN54HCT377 . . . FK PACKAGE
(TOP VIEW)
SN54HCT377 . . . J OR W PACKAGE
SN74HCT377 . . . DW OR N PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
CLKEN
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
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