MM74HC74AMX

MM74HC74AMX is a Motorola/TI dual D-type flip-flop in the HC CMOS family. It provides two edge-triggered storage elements with asynchronous preset (PRE) and clear (CLR).
Key points:
- Two independent D flip-flops: D1/CLK1/PRE1/CLR1 → Q1 and D2/CLK2/PRE2/CLR2 → Q2.
- Async inputs PRE and CLR are active-low; if PRE is low, Q is set; if CLR is low, Q is cleared, regardless of clock.
- On a rising clock edge (when PRE and CLR are high), Q follows D.
- Outputs: Q and Q′ for each flip-flop.
- Package: typically 14-pin devices; “AMX” denotes a specific package/temperature variant (check datasheet for exact packaging and rating).
- Supply: HC family operates from a low-voltage CMOS range (commonly around 2–6 V) with low power.
Common uses:
- Simple storage registers, buffering, and loading data on clock edges
- Small shift registers and basic counters
Tip: decouple Vcc to ground with a capacitor close to the device; ensure PRE/CLR are deactivated (high) before clocks run. For exact pinout and electrical specs, consult the datasheet for your specific AMX variant.

Features of MM74HC74AMX (dual D-type flip-flops):
- Two independent D-type flip-flops
- Positive-edge (rising) clocked
- Asynchronous preset (PRE) and clear (CLR), both active-low
- Data inputs: D1, D2; Clock inputs: CLK1, CLK2
- Outputs: Q and Q̅ for each flip-flop (Q1, Q1̅; Q2, Q2̅)
- 8-pin package with AMX variant (surface-mount)
- Wide supply range typical for HC family (2 V to 6 V)
- Low-power, high-speed CMOS technology
- Suitable for timing, data storage, and simple synchronous logic applications

14-pin Small Outline Integrated Circuit (SOIC) package, 0.300" wide (TI suffix AMX).

- Pin count: 14 pins (DIP-14 / SOIC-14, commonly labeled AMX packaging).
- Function: MM74HC74AMX is a dual positive-edge-triggered D-type flip-flop with independent asynchronous preset and clear (active-low). Each flip-flop has inputs D, CLK, PRE, CLR and outputs Q and Q̄.

Manufacturer: Monolithic Memories, Inc. (MMI). MMI was an American semiconductor company that designed and produced integrated circuits (logic and memory). It was acquired by Advanced Micro Devices (AMD) in 1987.

MM74HC74AMX is a dual D-type flip-flop with asynchronous clear and preset (positive-edge triggered).
Common applications:
- Registers and buffers
- Clocked storage elements in CPUs/microcontrollers
- State machines and control logic
- Counters and frequency dividers
- Timing and synchronization circuits
- Shift registers and data-latching circuits
- Clock-domain crossing helpers

Equivalent devices: any dual D-type edge-triggered flip-flop with async preset/clear in an 8-pin package. Common equivalents include:
- TI SN74HC74 (SN74HC74N/D)
- 74HC74 from NXP/ST
- MC74HC74 (ON Semiconductor/Motorola)
- uPD74HC74 (Renesas)
- 74HCT74 (TTL-compatible variant)