SNJ54ABT646A Datasheet, PDF (1/21 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS AND REGISTERS

SN54ABT646A, SN74ABT646A
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3ĆSTATE OUTPUTS
SCBS069H − JULY 1991 − REVISED MAY 2004
D Typical V_OLP (Output Ground Bounce)
<1 V at V_CC = 5 V, T_A = 25°C
D High-Drive Outputs (−32-mA I_OH, 64-mA I_OL)
D I_off Supports Partial-Power-Down Mode
Operation
SN54ABT646A . . . JT OR W PACKAGE
SN74ABT646A . . . DB, DGV, DW, NS, NT, OR PW PACKAGE
(TOP VIEW)
D Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
SN54ABT646A . . . FK PACKAGE
(TOP VIEW)
CLKAB 1
SAB 2
DIR 3
A1 4
A2 5
A3 6
A4 7
A5 8
A6 9
A7 10
A8 11
GND 12
24 V_CC
23 CLKBA
22 SBA
21 OE
20 B1
19 B2
18 B3
17 B4
16 B5
15 B6
14 B7
13 B8
4 3 2 1 28 27 26
A1 ₅
25 OE
A2 ₆
24 B1
A3 7
23 B2
NC 8
22 NC
A4 9
21 B3
A5 10
20 B4
A6 1112 _{13 14 15 16 17 1819} ^B5
description/ordering information
NC − No internal connection
These devices consist of bus-transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed
transmission of data directly from the input bus or from the internal registers. Data on the A or B bus is clocked
into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1
illustrates the four fundamental bus-management functions that can be performed with the ’ABT646A devices.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − NT
Tube
SN74ABT646ANT
SN74ABT646ANT
SOIC − DW
Tube
Tape and reel
SN74ABT646ADW
SN74ABT646ADWR
ABT646A
−40°C to 85°C
SOP − NS
SSOP − DB
Tape and reel
Tape and reel
SN74ABT646ANSR
SN74ABT646ADBR
ABT646A
AB646A
TSSOP − PW
Tube
Tape and reel
SN74ABT646APW
SN74ABT646APWR
AB646A
TVSOP − DGV
Tape and reel SN74ABT646ADGVR AB646A
CDIP − JT
Tube
SNJ54ABT646AJT
SNJ54ABT646AJT
−55°C to 125°C CFP − W
Tube
SNJ54ABT646AW
SNJ54ABT646AW
LCCC − FK
Tube
SNJ54ABT646AFK
SNJ54ABT646AFK
† _{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.
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
Copyright  2004, Texas Instruments Incorporated
On products compliant to MILĆPRFĆ38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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