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SN74HC74DR 参数 Datasheet PDF下载

SN74HC74DR图片预览
型号: SN74HC74DR
PDF下载: 下载PDF文件 查看货源
内容描述: 双D型上升沿触发的触发器具有清零和预设 [DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET]
分类和应用: 触发器
文件页数/大小: 20 页 / 725 K
品牌: TI [ TEXAS INSTRUMENTS ]
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SN54HC74, SN74HC74
DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS
WITH CLEAR AND PRESET
SCLS094D – DECEMBER 1982 – REVISED JULY 2003
D
D
D
D
D
D
Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 40-µA Max I
CC
Typical t
pd
= 15 ns
±4-mA
Output Drive at 5 V
Low Input Current of 1
µA
Max
SN54HC74 . . . J OR W PACKAGE
SN74HC74 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
description/ordering information
The ’HC74 devices contain two independent
D-type positive-edge-triggered flip-flops. A low
level at the preset (PRE) or clear (CLR) inputs sets
or resets the outputs, regardless of the levels of
the other inputs. When PRE and CLR are inactive
(high), data at the data (D) input meeting the setup
time requirements are transferred to the outputs
on the positive-going edge of the clock (CLK)
pulse. Clock triggering occurs at a voltage level
and is not directly related to the rise time of CLK.
Following the hold-time interval, data at the
D input can be changed without affecting the
levels at the outputs.
1CLR
1D
1CLK
1PRE
1Q
1Q
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
2CLR
2D
2CLK
2PRE
2Q
2Q
SN54HC74 . . . FK PACKAGE
(TOP VIEW)
1D
1CLR
NC
V
CC
2CLR
1CLK
NC
1PRE
NC
1Q
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
2D
NC
2CLK
NC
2PRE
NC – No internal connection
ORDERING INFORMATION
TA
PDIP – N
SOIC – D
–40°C to 85°C
SOP – NS
SSOP – DB
TSSOP – PW
CDIP – J
–55°C to 125°C
CFP – W
LCCC – FK
PACKAGE†
Tube of 25
Tube of 50
Reel of 2500
Reel of 250
Reel of 2000
Reel of 2000
Tube of 90
Reel of 2000
Reel of 250
Tube of 25
Tube of 150
Tube of 55
ORDERABLE
PART NUMBER
SN74HC74N
SN74HC74D
SN74HC74DR
SN74HC74DT
SN74HC74NSR
SN74HC74DBR
SN74HC74PW
SN74HC74PWR
SN74HC74PWT
SNJ54HC74J
SNJ54HC74W
SNJ54HC74FK
SNJ54HC74J
SNJ54HC74W
SNJ54HC74FK
HC74
HC74
HC74
HC74
TOP-SIDE
MARKING
SN74HC74N
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
Copyright
2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is 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.
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
1Q
GND
NC
2Q
2Q
1