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Product Detailed Parameters
- Description：IC FF JK TYPE DUAL 1BIT 16SOIC
- Series：74HCT
- Mfr：Harris Corporation
- Package：Tube
- Function：Set(Preset) and Reset
- Type：JK Type
- Output Type：Complementary
- Number of Elements：2
- Number of Bits per Element：1
- Clock Frequency：54 MHz
- Max Propagation Delay @ V, Max CL：40ns @ 4.5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：4mA, 4mA
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Iq)：4 µA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：16-SOIC
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Input Capacitance：10 pF
- Grade：-
- Qualification：-
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Overview
The CD74HCT109M is a dual JK-type flip-flop manufactured by Harris Corporation, belonging to the 74HCT logic series. It features two independent 1-bit flip-flops with set (preset) and reset capabilities in a single package. The device utilizes CMOS technology and operates within a supply voltage range of 4.5V to 5.5V. It is housed in a 16-pin Small Outline Integrated Circuit (SOIC) package. The component supports synchronous operation triggered by positive edges and includes dedicated load/preset inputs for state control.
Feature Summary
- Dual configuration providing two independent 1-bit JK flip-flops
- Integrated set (preset) and reset functionality for direct state control
- Positive edge-triggered synchronous operation compatible with HCT logic levels
Applications
- Digital data storage circuits requiring dual bit retention
- Synchronous sequential logic systems utilizing JK input configurations
- Control logic interfaces requiring preset and reset signal handling
Procurement Notes
Verify manufacturer origin as Harris Corporation or authorized successor entities due to obsolete status. Confirm RoHS compliance status, as original Harris versions may not meet current environmental standards. Validate pinout compatibility with standard 16-SOIC footprints before integration into new designs.
Selection Notes
Select this component when dual independent JK flip-flops are required within a single package footprint. Ensure system voltage aligns with the 4.5V to 5.5V operating range. Consider the positive edge trigger requirement for clock synchronization. Verify that the SOIC-16 package dimensions fit the target PCB layout constraints.
Part Context
This part belongs to the 74HCT family, designed for high-speed CMOS operation with TTL-compatible input thresholds. The CD74HCT109M specifically addresses applications needing multiple flip-flops without consuming excessive board space. Its dual structure simplifies routing compared to using separate single flip-flop packages.
Replacement Considerations
Check for equivalents from Texas Instruments or other manufacturers offering the CD74HCT109M or compatible 74HCT109 variants. Ensure functional parity regarding JK inputs, preset/reset lines, and package type.
