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Product Detailed Parameters
- Description：IC FF D-TYPE SNGL 8BIT 20TSSOP
- Series：74HCT
- Mfr：Nexperia USA Inc.
- Package：Tube
- Function：Standard
- Type：D-Type
- Output Type：Tri-State, Non-Inverted
- Number of Elements：1
- Number of Bits per Element：8
- Clock Frequency：76 MHz
- Max Propagation Delay @ V, Max CL：33ns @ 4.5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：6mA, 6mA
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Iq)：8 µA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-TSSOP
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Input Capacitance：3.5 pF
- Grade：-
- Qualification：-
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Overview
The Nexperia 74HCT574PW,112 is an octal D-type flip-flop with positive edge triggering and 3-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible input levels. The device is housed in a TSSOP-20 plastic surface-mount package (SOT360). It supports operation temperatures from -40 °C to +125 °C and includes clamp diodes on inputs for interfacing with voltages exceeding VCC.
Feature Summary
- Positive edge-triggered octal D-type flip-flop architecture
- Three-state outputs suitable for bus-oriented applications
- TTL-compatible input logic levels
- Asynchronous set and reset functionality
Applications
- Microprocessor register interfaces
- Bus-oriented data storage systems
- Parallel-to-serial conversion circuits
- High-speed digital signal processing registers
Procurement Notes
Verify the complete part number including the suffix ',112' to ensure the correct tube packaging configuration. Confirm that the design requires HCT logic family compatibility rather than standard HC or LVC variants. Check current production status as availability may vary by region. Ensure ESD handling protocols are followed during assembly due to CMOS sensitivity.
Selection Notes
Select this component when TTL-level interface compatibility is required alongside high-speed performance. The 3-state output capability allows direct connection to system buses without external buffering. Consider the TSSOP-20 package constraints for PCB layout density. Verify power supply stability within the 4.5 V to 5.5 V range to maintain timing specifications.
Part Context
This component belongs to the 74HCT logic family, designed for high-speed CMOS operation with TTL-compatible inputs. It serves as a digital storage element within larger integrated circuit systems. The 74HCT574 variant specifically provides eight independent D-type flip-flops with common clock and output enable controls.
Replacement Considerations
Direct substitutes include 74HC574PW variants if TTL input compatibility is not strictly required. Other manufacturers offer equivalent octal D-type flip-flops with 3-state outputs. Verify pinout compatibility and electrical characteristics before substitution.
