鈥?/div>
3-State Buffer-Type Noninverting Outputs
Drive Bus Lines Directly
Bus-Structured Pinout
Buffered Control Inputs
SN74ALS575A and
鈥睞S575
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
1D
2D
3D
4D
5D
6D
7D
8D
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
CLK
description
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 鈥?55擄C to
125擄C. The SN74ALS574B, SN74ALS575A,
SN74AS574, and SN74AS575 are characterized
for operation from 0擄C to 70擄C.
SN54ALS574B, SN54AS574 . . . FK PACKAGE
(TOP VIEW)
2D
1D
OE
VCC
1Q
3D
4D
5D
6D
7D
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
2Q
3Q
4Q
5Q
6Q
SN54AS575 . . . JT OR W PACKAGE
SN74ALS575A, SN74AS575 . . . DW OR NT PACKAGE
(TOP VIEW)
CLR
OE
1D
2D
3D
4D
5D
6D
7D
8D
NC
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
SN54AS575 . . . FK PACKAGE
(TOP VIEW)
1D
OE
CLR
NC
VCC
NC
1Q
2D
3D
4D
NC
5D
6D
7D
4 3 2 1 28 27 26
5
25
6
24
7
23
8
22
9
21
10
20
11
19
12 13 14 15 16 17 18
8D
GND
CLK
8Q
7Q
VCC
NC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
CLK
NC
2Q
3Q
4Q
NC
5Q
6Q
7Q
NC 鈥?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.
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
8D
NC
GND
NC
NC
CLK
8Q
Copyright
漏
1995, Texas Instruments Incorporated
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