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7474

Fairchild
Part Number 7474
Manufacturer Fairchild
Description Dual Positive-Edge-Triggered D-Type Flip-Flops
Published Jun 10, 2005
Detailed Description DM7474 Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs September 1986 Revis...
Datasheet PDF File 7474 PDF File

7474
7474


Overview
DM7474 Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs September 1986 Revised July 2001 DM7474 Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs General Description This device contains two independent positive-edge-triggered D-type flip-flops with complementary outputs.
The information on the D input is accepted by the flip-flops on the positive going edge of the clock pulse.
The triggering occurs at a voltage level and is not directly related to the transition time of the rising edge of the clock.
The data on the D input may be changed while the clock is LOW or HIGH without affecting the outputs as long as the data setup and hold times are not violated.
A LOW logic level on the preset or clear inputs will set or reset the outputs regardless of the logic levels of the other inputs.
Ordering Code: Order Number Package Number Package Description DM7474M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.
150" Narrow DM7474N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.
300" Wide Devices also available in Tape and Reel.
Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram Function Table Inputs Outputs PR CLR CLK D Q Q LHXXHL HLXXLH L L XXHH (Note 1) (Note 1) HH ↑ HH L HH↑ L LH H H L X Q0 Q0 H = HIGH Logic Level X = Either LOW or HIGH Logic Level L = LOW Logic Level ↑ = Positive-going transition of the clock.
Q0 = The output logic level of Q before the indicated input conditions were established.
Note 1: This configuration is nonstable; that is, it will not persist when either the preset and/or clear inputs return to their inactive (HIGH) level.
© 2001 Fairchild Semiconductor Corporation DS006526 www.
fairchildsemi.
com DM7474 Absolute Maximum Ratings(Note 2) Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 5.
5V 0°C to +70°C −65°C to +150°C...


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