TEXAS INSTRUMENTS SN54AHC574, SN74AHC574 OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS User Manual - Specifications

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OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS

WITH 3-STATE OUTPUTS SCLS244I – OCTOBER 1995 – REVISED JULY 2003

Operating Range 2-V to 5.5-V VCC ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

3-State Outputs Drive Bus Lines Directly

– 200-V Machine Model (A115-A)

Latch-Up Performance Exceeds 250 m A Per

– 1000-V Charged-Device Model (C101)

JESD 17 SN54AHC574 J OR W PACKAGE SN54AHC574 FK PACKAGE SN74AHC574 DB, DGV, DW, N, NS, OR PW PACKAGE (TOP VIEW)

(TOP VIEW)

OE VCC

6D 6Q 7D 7Q 8D 8Q GND CLK

description/ordering information The ’AHC574 devices are octal edge-triggered D-type flip-flops that feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels of the data (D) inputs. A buffered output-enable (OE) input places the eight outputs in either a normal logic state (high or low) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly.

The high-impedance state and the increased drive provide the capability to drive bus lines without interface or 8D 2D

pullup components. 1D

ORDERING INFORMATION 8Q

ORDERABLE TOP-SIDE 7Q 1Q

TA PACKAGE†

PART NUMBER MARKING

PDIP – N Tube SN74AHC574N SN74AHC574N

Tube SN74AHC574DW

SOIC DW AHC574

Tape and reel SN74AHC574DWR

SOP – NS Tape and reel SN74AHC574NSR AHC574

–40°C to 85°C

SSOP – DB Tape and reel SN74AHC574DBR HA574

Tube SN74AHC574PW

TSSOP PW HA574 –

Tape and reel SN74AHC574PWR

TVSOP – DGV Tape and reel SN74AHC574DGVR HA574 CDIP – J Tube SNJ54AHC574J SNJ54AHC574J

–55°C to 125°C CFP – W Tube SNJ54AHC574W SNJ54AHC574W

LCCC – FK Tube SNJ54AHC574FK SNJ54AHC574FK

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 PRODUCTION DATA information is current as of publication date.

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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