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Product Detailed Parameters
- Description：IC FF JK-TYPE DUAL 1BIT 16TSSOP
- Series：74HC
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR)
- Function：Set(Preset) and Reset
- Type：JK Type
- Output Type：Complementary
- Number of Elements：2
- Number of Bits per Element：1
- Clock Frequency：81 MHz
- Max Propagation Delay @ V, Max CL：31ns @ 6V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：5.2mA, 5.2mA
- Voltage - Supply：2V ~ 6V
- Current - Quiescent (Iq)：4 µA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：16-TSSOP
- Package / Case：16-TSSOP (0.173", 4.40mm Width)
- Input Capacitance：3.5 pF
- Grade：-
- Qualification：-
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Overview
The 74HC109PWJ is a dual positive-edge-triggered J-K flip-flop manufactured by Nexperia. It features individual J and K inputs, clock (CP) inputs, asynchronous active-low set (SD) and reset (RD) inputs, and complementary Q and Q outputs. The device operates within a supply voltage range of 2.0 V to 6.0 V for the HC series. It includes clamp diodes on inputs to allow interfacing with voltages exceeding VCC using current-limiting resistors. The component is specified for operation from -40 °C to +85 °C and -40 °C to +125 °C.
Feature Summary
- Dual positive-edge-triggered J-K flip-flop architecture
- Asynchronous active-low set and reset inputs
- CMOS low power dissipation with high noise immunity
- Input clamp diodes for over-voltage interface capability
Applications
- Digital counting circuits
- Shift register construction
- State machine implementation
- Frequency division applications
Procurement Notes
Verify availability status directly with Nexperia or authorized distributors as supply conditions may vary. Confirm RoHS compliance and specific package variants (TSSOP16) prior to ordering. Ensure design compatibility with required operating temperature ranges and supply voltage specifications defined in the official datasheet.
Selection Notes
Select this component when a dual J-K flip-flop with asynchronous control is required. The HC series offers wide supply voltage flexibility compared to HCT variants. Consider the TSSOP16 package for surface-mount assembly. Verify ESD protection requirements against ANSI/ESDA/JEDEC standards if applicable to the target environment.
Part Context
The 74HC109 belongs to the Nexperia 74HC family of high-speed CMOS logic devices. This family provides performance comparable to standard TTL while offering lower power consumption and wider supply voltage ranges. The 74HC109 specifically addresses applications requiring dual flip-flops with set and reset functionality in compact surface-mount packages.
Replacement Considerations
Compatible substitutes include other 74HC109 variants from Nexperia such as 74HC109D or 74HC109DB, provided the package type matches the design constraints. Cross-manufacturer equivalents must be verified for pinout compatibility and electrical parameter alignment.
