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SN74ALS876ADWR Datasheet(PDF) 1 Page - Texas Instruments

Part No. SN74ALS876ADWR
Description  DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54ALS874B, SN74ALS874B, SN74ALS876A
SN74AS874, SN74AS876
DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SDAS061C – APRIL 1982 – REVISED JANUARY 1995
Copyright
© 1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
3-State Buffer-Type Outputs Drive Bus
Lines Directly
Bus-Structured Pinout
Choice of True or Inverting Logic
– SN54ALS874B, SN74ALS874B,
SN74AS874 Have True Outputs
– SN74ALS876A, SN74AS876 Have
Inverting Outputs
Asynchronous Clear
Package Options Include Plastic
Small-Outline (DW) Packages, Plastic (FN)
and Ceramic (FK) Chip Carriers, and
Standard Plastic (NT) and Ceramic (JT)
300-mil DIPs
description
These dual 4-bit D-type edge-triggered flip-flops
feature 3-state outputs designed specifically as
bus drivers. They are particularly suitable for
implementing
buffer
registers,
I/O
ports,
bidirectional bus drivers, and working registers.
The edge-triggered flip-flops enter data on the
low-to-high transition of the clock (CLK) input.
The
SN54ALS874B,
SN74ALS874B,
and
SN74AS874 have
clear
(CLR)
inputs
and
noninverting Q outputs. The SN74ALS876A and
SN74AS876 have preset (PRE) inputs and
inverting Q outputs; taking PRE low causes the
four Q or Q outputs to go low independently of the
clock.
The SN54ALS874B is characterized for operation
over the full military temperature range of – 55
°C
to 125
°C. The SN74ALS874B, SN74ALS876A,
SN74AS874,
and
SN74AS876 devices
are
characterized for operation from 0
°C to 70°C.
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24
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1CLR
1OE
1D1
1D2
1D3
1D4
2D1
2D2
2D3
2D4
2OE
GND
VCC
1CLK
1Q1
1Q2
1Q3
1Q4
2Q1
2Q2
2Q3
2Q4
2CLK
2CLR
SN54ALS874B ...JT PACKAGE
SN74ALS874B, SN74AS874 . . . DW OR NT PACKAGE
(TOP VIEW)
32
1
13 14
5
6
7
8
9
10
11
1Q2
1Q3
1Q4
NC
2Q1
2Q2
2Q3
1D2
1D3
1D4
NC
2D1
2D2
2D3
4
15 16 17 18
SN54ALS874B . . . FK PACKAGE
(TOP VIEW)
28 27 26
25
24
23
22
21
20
19
12
NC – No internal connection
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12
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23
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1PRE
1OE
1D1
1D2
1D3
1D4
2D1
2D2
2D3
2D4
2OE
GND
VCC
1CLK
1Q1
1Q2
1Q3
1Q4
2Q1
2Q2
2Q3
2Q4
2CLK
2PRE
SN74ALS876A, SN74AS876 . . . DW OR NT PACKAGE
(TOP VIEW)
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.




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