SNJ54AS574B Datasheet, PDF (1/25 Pages) Texas Instruments – OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS

SN54ALS574B, SN54AS574, SN54AS575
SN74ALS574B, SN74ALS575A, SN74AS574, SN74AS575
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS165B – JUNE 1982 – REVISED JULY 1995
• 3-State Buffer-Type Noninverting Outputs
Drive Bus Lines Directly
• Bus-Structured Pinout
• Buffered Control Inputs
• SN74ALS575A and ′AS575 Have
Synchronous Clear
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), Standard Plastic (N, NT)
and Ceramic (J, JT) 300-mil DIPs, and
Ceramic Flat (W) Packages
SN54ALS574B, SN54AS574 . . . J OR W PACKAGE
SN74ALS574B, SN74AS574 . . . DW OR N PACKAGE
(TOP VIEW)
OE 1
1D 2
2D 3
3D 4
4D 5
5D 6
6D 7
7D 8
8D ⁹
GND ¹⁰
20 VCC
19 1Q
18 2Q
17 3Q
16 4Q
15 5Q
14 6Q
13 7Q
12 _8Q
11 _CLK
description
SN54ALS574B, SN54AS574 . . . FK PACKAGE
(TOP VIEW)
These octal D-type edge-triggered flip-flops
feature 3-state outputs designed specifically for
bus driving. They are particularly suitable for
implementing buffer registers, I/O ports,
bidirectional bus drivers, and working registers.
The eight flip-flops enter data on the low-to-high
transition of the clock (CLK) input. The
SN74ALS575A, SN54AS575, and SN74AS575
may be synchronously cleared by taking the clear
(CLR) input low.
The output-enable (OE) input does not affect
internal operations of the flip-flops. Old data can
be retained or new data can be entered while the
outputs are in the high-impedance state.
The SN54ALS574B, SN54AS574, and
SN54AS575 are characterized for operation over
the full military temperature range of – 55°C to
125°C. The SN74ALS574B, SN74ALS575A,
SN74AS574, and SN74AS575 are characterized
for operation from 0°C to 70°C.
3 2 1 20 19
3D 4
18 2Q
4D 5
17 3Q
5D 6
16 4Q
6D 7
15 5Q
7D 8
14 6Q
9 10 11 12 13
SN54AS575 . . . JT OR W PACKAGE
SN74ALS575A, SN74AS575 . . . DW OR NT PACKAGE
(TOP VIEW)
CLR 1
OE 2
1D 3
2D 4
3D 5
4D 6
5D 7
6D 8
7D 9
8D 10
NC 11
GND 12
24 VCC
23 NC
22 1Q
21 2Q
20 3Q
19 4Q
18 5Q
17 6Q
16 7Q
15 8Q
14 CLK
13 NC
SN54AS575 . . . FK PACKAGE
(TOP VIEW)
4 3 2 1 28 27 26
2D ⁵
25 _2Q
3D ⁶
24 _3Q
4D ⁷
23 _4Q
NC ⁸
22 NC
5D ⁹
21 5Q
6D ¹⁰
20 6Q
7D ¹¹
19 7Q
12 13 14 15 16 17 18
NC – No internal connection
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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Copyright © 1995, Texas Instruments Incorporated
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