SN54ALS174_07 Datasheet, PDF (1/21 Pages) Texas Instruments – HEX/QUADRUPLE D-TYPE FLIP-FLOPS WITH CLEAR

SN54ALS174, SN54ALS175, SN54AS174, SN54AS175B
SN74ALS174, SN74ALS175, SN74AS174, SN74AS175B
HEX/QUADRUPLE D-TYPE FLIP-FLOPS WITH CLEAR
SDAS207E - APRIL 1982 - REVISED MAY 2002
D ’ALS174 and ’AS174 Contain Six Flip-Flops
With Single-Rail Outputs
D ’ALS175 and ’AS175B Contain Four
Flip-Flops With Double-Rail Outputs
D Buffered Clock and Direct-Clear Inputs
D Applications Include:
– Buffer/Storage Registers
– Shift Registers
– Pattern Generators
D Fully Buffered Outputs for Maximum
Isolation From External Disturbances
(’AS Only)
SN54ALS174 . . . J OR W PACKAGE
SN54AS174 . . . J PACKAGE
SN74ALS174, SN74AS174 . . . D , N, OR NS PACKAGE
(TOP VIEW)
SN54ALS175 . . . J OR W PACKAGE
SN54AS175B . . . J PACKAGE
SN74ALS175, SN74AS175B . . . D, N, OR NS PACKAGE
(TOP VIEW)
CLR 1
1Q 2
1D 3
2D 4
2Q 5
3D 6
3Q 7
GND 8
16 V_CC
15 6Q
14 6D
13 5D
12 5Q
11 4D
10 4Q
9 CLK
CLR 1
1Q 2
1Q 3
1D 4
2D 5
2Q 6
2Q 7
GND 8
16 V_CC
15 4Q
14 4Q
13 4D
12 3D
11 3Q
10 3Q
9 CLK
SN54ALS174, SN54AS174 . . . FK PACKAGE
(TOP VIEW)
SN54ALS175 . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
1D 4
18 6D
2D 5
17 5D
NC 6
16 NC
2Q 7
15 5Q
3D 8
14 _4D
9 10 11 12 13
3 2 1 20 19
1Q 4
18 4Q
1D 5
17 4D
NC 6
16 NC
2D 7
15 3D
2Q 8
14 _3Q
9 10 11 12 13
NC – No internal connection
description
These positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a
direct-clear (CLR) input. The ’ALS175 and ’AS175B feature complementary outputs from each flip-flop.
Information at the data (D) inputs meeting the setup-time requirements is transferred to the outputs on the
positive-going edge of the clock pulse. Clock triggering occurs at a particular voltage level and is not directly
related to the transition time of the positive-going pulse. When the clock (CLK) input is at either the high or low
level, the D-input signal has no effect at the output.
These circuits are fully compatible for use with most TTL circuits.
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  2002, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, 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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