SN54ALS841 Datasheet, PDF (1/11 Pages) Texas Instruments – 10-BIT BUS INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS

SN54ALS841, SN54AS841, SN54ALS842, SN54AS842
SN74ALS841, SN74AS841, SN74ALS842, SN74AS842
10-BIT BUS INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS
SDAS059B – D2910, DECEMBER 1983 – REVISED MAY 1986
• 3-State Buffer-Type Outputs Drive
Bus-Lines Directly
• Bus-Structured Pinout
• Provide Extra Bus Driving Latches
Necessary for Wider Address/Data Paths or
Buses with Parity
• Buffered Control Inputs to Reduce DC
Loading
• Power-Up High-Impedance State
• Package Options Include Plastic Small
Outline Packages, Both Plastic and
Ceramic Chip Carriers, and Standard
Plastic and Ceramic 300-mil DIPs
• Dependable Texas Instruments Quality and
Reliability
description
These 10-bit latches feature 3-state outputs designed specifically for driving highly-capacitive or relatively
low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers.
The ten latches are transparent D-type. The ’ALS841 and ’AS841 have noninverting data (D) inputs. The
’ALS842 and ’AS842 have inverting D inputs.
SN54ALS841, SN54AS841 . . . JT PACKAGE
SN74ALS841, SN74AS841 . . . DW OR NT PACKAGE
(TOP VIEW)
SN54ALS841, SN54AS841 . . . FK PACKAGE
SN74ALS841, SN74AS841 . . . FN PACKAGE
(TOP VIEW)
OC ₁
1D ₂
2D ₃
3D ₄
4D ₅
5D ₆
6D 7
7D 8
8D 9
9D 10
10D 11
GND 12
24 ^V_CC
23 ^1Q
22 ^2Q
21 ^3Q
20 ^4Q
19 ^5Q
18 ^6Q
17 7Q
16 8Q
15 9Q
14 10Q
13 C
SN54ALS842, SN54AS842 . . . JT PACKAGE
SN74ALS842, SN74AS842 . . . DW OR NT PACKAGE
(TOP VIEW)
OC ₁
1D ₂
2D ₃
3D ₄
4D ₅
5D ₆
6D 7
7D 8
8D 9
9D 10
10D 11
GND 12
24 ^V_CC
23 ^1Q
22 ^2Q
21 ^3Q
20 ^4Q
19 ^5Q
18 ^6Q
17 7Q
16 8Q
15 9Q
14 10Q
13 C
4 3 2 1 28 27 26
3D ⁵
25 3Q
4D ⁶
24 4Q
5D 7
23 5Q
NC 8
22 NC
6D 9
21 6Q
7D 10
20 7Q
8D 11
19 8Q
12 13 14 15 16 17 18
SN54ALS842, SN54AS842 . . . FK PACKAGE
SN74ALS842, SN74AS842 . . . FN PACKAGE
(TOP VIEW)
4 3 2 1 28 27 26
3D ⁵
25 3Q
4D ⁶
24 4Q
5D 7
23 5Q
NC 8
22 NC
6D 9
21 6Q
7D 10
20 7Q
8D 11
19 8Q
12 13 14 15 16 17 18
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 © 1986, Texas Instruments Incorporated
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