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Renesas 74HCT574FP-E
- Part No.:
- 74HCT574FP-E
- Manufacturer:
- Renesas
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74HCT574FP-E.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,963
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Product details
Overview
74HCT574FP-E from Renesas Electronics is an octal D-type positive-edge-triggered flip-flop with non-inverting 3-state outputs, designed for data latching and bus interface in digital systems. It operates at VCC = 4.5–5.5 V, delivers tPD = 15 ns (typ, CL = 50 pF), supports 15 LSTTL loads, and features low ICC (4 µA max) and high noise immunity (VIH = 2.0 V min, VIL = 0.8 V max).
For engineers reviewing the 74HCT574FP-E datasheet, 74HCT574FP-E pinout, 74HCT574FP-E application, or 74HCT574FP-E equivalent, key selection criteria include its 3-state output control (OC), edge-triggered storage behavior, SOP-20 JEDEC package compatibility, and guaranteed operation from –40°C to +85°C in industrial environments.
Technical Context
This device implements eight independent D-type latches synchronized to the rising edge of the clock (CK) input. Each latch captures the logic level present at its D input when CK transitions from low to high, provided setup (tsu = 3 ns min) and hold (th = –2 ns min) timing requirements are met.
The output control (OC) terminal enables full bus isolation: when OC = HIGH, all Q outputs enter high-impedance (Z) state regardless of clock or data states. The device exhibits CMOS-level input thresholds with LSTTL-compatible output drive strength and fanout capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures stable operation across standard 5 V TTL/CMOS supply rails with ±10% tolerance. |
| tPD (D→Q) | 15 ns typ (CL = 50 pF) - Enables reliable 30 MHz maximum clock frequency in buffered load conditions. |
| IOH / IOL | –6 mA / +6 mA - Drives up to 15 LSTTL loads directly without external buffers. |
| VIH / VIL | 2.0 V min / 0.8 V max - Guarantees robust noise margin (>0.4 V) against TTL-level input signals. |
| ICC (static) | 4 µA max at Ta = 25°C - Supports ultra-low-power standby in battery-backed or energy-sensitive systems. |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade deployment without derating. |
| Output Control | Active-HIGH OC pin - Allows synchronous bus release without clock dependency or glitch risk. |
Pinout & Package
SOP-20 package (JEDEC MS-013AA, Renesas code FP-20DBV, 12.8 mm × 7.5 mm × 2.2 mm body, 1.27 mm pitch). Gull-wing leads, Ni/Pd/Au plating, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8 (1D–8D) | Data Inputs | Asynchronous parallel data inputs latched on next CK↑ transition. |
| 9 (GND) | Ground Reference | Primary return path for logic and output current; must be low-impedance. |
| 10 (OC) | Output Control | Active-HIGH enable for 3-state outputs; overrides clock and data states. |
| 11–18 (1Q–8Q) | Non-inverting Outputs | Tri-stateable latched outputs; match D-input state after CK↑ if OC = LOW. |
| 19 (CK) | Clock Input | Positive-edge-triggered master clock; requires clean rise/fall time ≤6 ns. |
| 20 (VCC) | Supply Voltage | 5 V nominal power rail; decoupling capacitor (0.1 µF) required adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| LSTTL-Compatible Outputs | Delivers –6 mA / +6 mA drive into LSTTL loads, eliminating need for level-shifting buffers in mixed-logic systems. |
| 3-State Output Control | OC pin forces all Q outputs to high-Z simultaneously-critical for shared-bus arbitration and multi-master data routing. |
| Low Quiescent Current | ICC ≤ 4 µA (Ta = 25°C) enables use in always-on subsystems without thermal or battery-life penalty. |
| Wide Noise Margin | VIH = 2.0 V min and VIL = 0.8 V max provide ≥0.4 V noise immunity under worst-case VCC = 4.5 V. |
| Industrial Temperature Range | Specified operation from –40°C to +85°C ensures reliability in factory automation, test equipment, and outdoor electronics. |
Applications
| Microcontroller Bus Interface | Digital Signal Acquisition |
|---|---|
|
Use Scenario: Interfacing an 8-bit microcontroller data bus to external memory or peripheral ICs with asynchronous timing. IC Role / Device Role / Timing Role: Acts as a transparent data latch to capture and hold address/data during bus cycle transitions. Use Value: Eliminates bus contention by isolating MCU outputs during read cycles using OC-controlled 3-state outputs. |
Use Scenario: Capturing parallel sensor outputs (e.g., ADC result bus) synchronized to a system clock. IC Role / Device Role / Timing Role: Provides edge-triggered sampling of 8-bit analog-to-digital conversion results. Use Value: Ensures deterministic capture timing with 15 ns propagation delay and –2 ns hold time margin. |
| Industrial I/O Expansion | Legacy System Glue Logic |
|
Use Scenario: Adding programmable parallel I/O ports to PLC modules or motor controllers. IC Role / Device Role / Timing Role: Serves as bidirectional data register controlled via OC and CK from FPGA or ASIC. Use Value: Enables hot-swappable I/O expansion with glitch-free bus release via synchronous OC assertion. |
Use Scenario: Replacing obsolete 74LS374 in legacy instrumentation requiring drop-in timing compatibility. IC Role / Device Role / Timing Role: Functions as direct functional replacement with identical pinout and AC/DC specs. Use Value: Maintains existing PCB layout while upgrading to lower power, higher noise immunity, and extended temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT574N | Dual-in-line (DIP-20) package; same electrical specs but larger footprint and no JEDEC SOP variant. | Preferred for prototyping or through-hole assembly; unsuitable for space-constrained PCBs. | Select when manual soldering or breadboard evaluation is required. |
| 74VHC574FT | Higher speed (tPD = 9.5 ns typ), wider VCC range (2–5.5 V), but lower output drive (±8 mA vs ±6 mA). | Better suited for mixed-voltage systems (e.g., 3.3 V logic interfacing to 5 V peripherals). | Choose when operating below 4.5 V or requiring sub-10 ns propagation in 3.3 V domains. |
Compared with SN74HCT574N and 74VHC574FT, the 74HCT574FP-E offers optimal balance of industrial temperature support, SOP-20 compactness, and proven LSTTL compatibility-making it ideal for volume-manufactured embedded controllers where board area and thermal stability are critical.
Availability
74HCT574FP-E is available at Aetrix Electronics and suitable for industrial automation, test and measurement equipment, and office electronics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for 74HCT574FP-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The 74HCT574FP-E belongs to Renesas' legacy HCT logic family, engineered for seamless interoperability with TTL systems while delivering CMOS power efficiency and noise immunity in industrial environments.
FAQ
What is the maximum clock frequency supported by the 74HCT574FP-E?
The 74HCT574FP-E supports a maximum clock frequency of 30 MHz at Ta = 25°C and VCC = 4.5 V, with guaranteed minimum operation up to 24 MHz across the full –40°C to +85°C industrial temperature range. This is derived from the specified maximum propagation delay (tPD) of 39 ns (max) and minimum pulse width (tw) of 20 ns (max) under worst-case conditions.
Does the 74HCT574FP-E have true 3-state outputs, and how is output disable controlled?
Yes, the 74HCT574FP-E features true 3-state outputs controlled by the active-HIGH Output Control (OC) pin. When OC = HIGH, all eight Q outputs enter high-impedance state regardless of clock or data inputs-enabling safe bus sharing without signal contention. This behavior is explicitly confirmed in the Function Table and Logic Diagram of the Renesas datasheet Rev.2.00.
Is the 74HCT574FP-E pin-compatible with the older 74LS374?
Yes, the 74HCT574FP-E shares identical pinout and function with the 74LS374, including D inputs (pins 1–8), Q outputs (pins 11–18), CK (pin 19), OC (pin 10), VCC (pin 20), and GND (pin 9). Its HCT logic family retains LSTTL voltage compatibility while improving speed, power, and noise immunity-making it a direct drop-in replacement.
What is the recommended decoupling for the 74HCT574FP-E?
A 0.1 µF ceramic capacitor placed as close as possible between pin 20 (VCC) and pin 9 (GND) is mandatory for stable operation. For systems with multiple 74HCT574FP-E devices or high-frequency switching, add a bulk 4.7–10 µF tantalum or aluminum electrolytic capacitor per power rail segment to suppress low-frequency ripple and transient droop.
Can the 74HCT574FP-E operate reliably at VCC = 4.5 V?
Yes, the 74HCT574FP-E is fully specified down to VCC = 4.5 V across all parameters-including propagation delay (tPD ≤ 39 ns), output drive (IOH/IOL ≥ ±6 mA), and logic thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V)-per the Recommended Operating Conditions and Electrical Characteristics tables in the Renesas datasheet Rev.2.00.
74HCT574FP-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74HCT
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- 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
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74HCT574FP-E FAQ
1.How can I place an order for 74HCT574FP-E through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT574FP-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74HCT574FP-E reliable?
The price and inventory of 74HCT574FP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT574FP-E is usually 5 days.
3.What payment methods are accepted for 74HCT574FP-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT574FP-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT574FP-E?
74HCT574FP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT574FP-E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74HCT574FP-E?
For technical support, including 74HCT574FP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT574FP-E requirements.
6.How does Aetrix verify that 74HCT574FP-E is sourced from the original manufacturer or authorized distributors?
All 74HCT574FP-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74HCT574FP-E meets industry standards.
7.What is the process for return or replacement of 74HCT574FP-E?
All 74HCT574FP-E units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT574FP-E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74HCT574FP-E part is unused and in its original packaging.
Return procedure for 74HCT574FP-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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