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SN74LS74A

Motorola
Part Number SN74LS74A
Manufacturer Motorola
Description DUAL D-TYPE POSITIVE EDGE-TRIGGERED FLIP-FLOP
Published Jan 9, 2017
Detailed Description DUAL D-TYPE POSITIVE EDGE-TRIGGERED FLIP-FLOP The SN54 / 74LS74A dual edge-triggered flip-flop utilizes Schottky TTL cir...
Datasheet PDF File SN74LS74A PDF File

SN74LS74A
SN74LS74A

Overview
DUAL D-TYPE POSITIVE EDGE-TRIGGERED FLIP-FLOP The SN54 / 74LS74A dual edge-triggered flip-flop utilizes Schottky TTL circuitry to produce high speed D-type flip-flops.
Each flip-flop has individual clear and set inputs, and also complementary Q and Q outputs.
Information at input D is transferred to the Q output on the positive-going edge of the clock pulse.
Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transition time of the positive-going pulse.
When the clock input is at either the HIGH or the LOW level, the D input signal has no effect.
LOGIC DIAGRAM (Each Flip-Flop) SET (SD)4 (10) CLEAR (CD) 1 (13) CLOCK 3 (11) D 2 (12) Q 5 (9) Q 6 (8) MODE SELECT — TRUTH TABLE OPERATING MODE INPUTS SD SD D OUTPUTS QQ Set Reset (Clear) *Undetermined Load “1” (Set) Load “0” (Reset) LHXHL HLXLH L L XHH HH h H L HH l LH * Both outputs will be HIGH while both SD and CD are LOW, but the output states are unpredictable if SD and CD g...


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