Texas Instruments SN54HC74 SN74HC74 Dual D-Type Positive-Edge-Triggered Flip-Flops with Clear and Preset Data Manual

查询5962-8405601VCA供应商 SN54HC74, SN74HC74

DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS

WITH CLEAR AND PRESET SCLS094D – DECEMBER 1982 – REVISED JULY 2003 Wide Operating Voltage Range of 2 V to 6 V SN54HC74 J OR W PACKAGE

SN74HC74 D, DB, N, NS, OR PW PACKAGE

Outputs Can Drive Up To 10 LSTTL Loads

(TOP VIEW)

Low Power Consumption, 40-µA Max ICC

Typical tpd = 15 ns 1CLR VCC

1D 2CLR

±4-m A Output Drive at 5 V

1CLK 2D

Low Input Current of 1 µA Max

1PRE 2CLK

1Q 2PRE

description/ordering information

The ’HC74 devices contain two independent GND 2Q D-type positive-edge-triggered flip-flops. A low level at the preset (PRE) or clear (CLR) inputs sets

SN54HC74 FK PACKAGE

or resets the outputs, regardless of the levels of

(TOP VIEW)

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 1CLK 2D and is not directly related to the rise time of CLK. NC NC Following the hold-time interval, data at the 1PRE 2CLK D input can be changed without affecting the NC NC

levels at the outputs. 1Q 2PRE

NC – No internal connection

ORDERING INFORMATION 1D

ORDERABLE TOP-SIDE 1C LR

TA PACKAGE†

PART NUMBER MARKING

PDIP – N Tube of 25 SN74HC74N 2Q SN74HC74N

Tube of 50 SN74HC74D 2Q 2C LR

SOIC – D Reel of 2500 SN74HC74DR HC74

Reel of 250 SN74HC74DT

–40°C to 85°C SOP – NS Reel of 2000 SN74HC74NSR HC74

SSOP – DB Reel of 2000 SN74HC74DBR HC74

Tube of 90 SN74HC74PW

TSSOP – PW Reel of 2000 SN74HC74PWR HC74

Reel of 250 SN74HC74PWT

CDIP – J Tube of 25 SNJ54HC74J SNJ54HC74J

–55°C to 125°C CFP – W Tube of 150 SNJ54HC74W SNJ54HC74W

LCCC – FK Tube of 55 SNJ54HC74FK SNJ54HC74FK

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.

PRODUCTION DATA information is current as of publication date. Copyright  2003, Texas Instruments Incorporated

Products conform to specifications per the terms of Texas Instruments On products compliant to MIL-PRF-38535, all parameters are tested standard warranty. Production processing does not necessarily include unless otherwise noted. On all other products, production testing of all parameters. processing does not necessarily include testing of all parameters.

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