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Renesas 74HCT564P-E
- Part No.:
- 74HCT564P-E
- Manufacturer:
- Renesas
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74HCT564P-E.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
74HCT564P-E from Renesas Electronics is an octal D-type flip-flop with inverting 3-state outputs, designed for data latching and bus isolation in synchronous digital systems. It operates at 4.5–5.5 V, features 15 ns typical propagation delay (D to Q), supports 15 LSTTL loads, and functions across –40°C to +85°C for industrial control and instrumentation applications.
For engineers reviewing the 74HCT564P-E datasheet, 74HCT564P-E pinout, 74HCT564P-E application, or 74HCT564P-E equivalent, key selection criteria include positive-edge clock triggering, output enable-controlled high-impedance state, LSTTL/CMOS logic level compatibility, and DIP-20 packaging for through-hole prototyping and legacy board replacement.
Technical Context
This device implements eight independent edge-triggered D flip-flops, each with complementary Q and Q̅ outputs. The output control (OC) input enables synchronous three-state operation-asserting OC high forces all Q and Q̅ outputs into high-impedance regardless of clock or data states.
It uses HCT-series CMOS technology for TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and rail-to-rail CMOS output swing. Timing is characterized with CL = 50 pF and input rise/fall times ≤6 ns, supporting maximum clock frequencies up to 30 MHz at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | HCT - TTL-compatible inputs with CMOS outputs, enabling direct interface to 74LS and microcontroller GPIOs. |
| Supply Voltage | 4.5–5.5 V - Matches standard 5 V digital rails; no external regulation required for legacy 5 V systems. |
| Propagation Delay | 15 ns typ (D to Q, CL = 50 pF) - Enables reliable operation in 30 MHz clock domains with timing margin. |
| Output Drive | ±6 mA - Sinks or sources sufficient current to drive 15 LSTTL loads without buffering. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial environments including factory automation and test equipment. |
| Input Current | ±0.1 µA max - Negligible loading on upstream logic; eliminates need for pull-up/down resistors in most cases. |
| Quiescent Current | 4 µA max - Supports low-power standby modes when outputs are disabled via OC. |
Pinout & Package
Dual In-line Package (DIP-20), 2.54 mm pitch, through-hole mounting. Body dimensions: 24.5 mm × 6.3 mm × 3.3 mm (L × W × H). RoHS-compliant Ni/Pd/Au plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8 (1D–8D) | Data Inputs | Asynchronous D inputs for each flip-flop; sampled on rising clock edge. |
| 9 | GND | Ground reference for all internal circuitry and I/O. |
| 10 | OC | Active-high output control; disables all Q/Q̅ outputs to high-Z when high. |
| 11–18 (1Q–8Q) | Inverted Outputs | Complementary Q outputs (Q̅); active-low latched data values. |
| 19 | CLK | Positive-edge triggered clock input; synchronizes all eight flip-flops. |
| 20 | VCC | +5 V supply; powers internal logic and output drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting 3-state outputs | Enables bidirectional bus sharing without external direction control logic. |
| LSTTL/CMOS dual compatibility | Accepts standard TTL input voltages while delivering full CMOS output swing for noise immunity. |
| Low static current (4 µA) | Reduces system-level power consumption during idle or hold states. |
| High-speed 15 ns propagation | Supports tight timing budgets in data acquisition and real-time control loops. |
| Industrial temperature range | Ensures functional reliability in uncontrolled ambient environments like motor drives and PLC modules. |
Applications
| Industrial Data Acquisition | Legacy System Bus Interface |
|---|---|
Use Scenario: Capturing parallel sensor data (e.g., 8-bit ADC outputs) synchronized to a master controller clock. IC Role / Device Role / Timing Role: Edge-triggered latch holding sampled values until read by microcontroller over shared data bus. Use Value: Prevents metastability and ensures deterministic sampling with precise setup/hold timing (tsu = 3 ns, th = –2 ns). | Use Scenario: Isolating CPU address/data buses from peripheral modules in retro-computing or test equipment backplanes. IC Role / Device Role / Timing Role: Bidirectional bus buffer with controlled enable timing to avoid contention during read/write cycles. Use Value: OC pin allows clean bus turn-around with 16 ns typical output disable time (tHZ), eliminating glitches. |
| Programmable Logic Glue Logic | Industrial I/O Expansion |
Use Scenario: Interfacing FPGA I/O banks to 5 V legacy peripherals requiring level-shifted, registered signals. IC Role / Device Role / Timing Role: Registered signal conditioner providing setup time margin and noise filtering via clocked sampling. Use Value: 15 ns propagation delay and 50 pF load drive capability ensure timing closure across mixed-voltage interfaces. | Use Scenario: Expanding discrete I/O points on PLC base units using parallel control lines from main processor. IC Role / Device Role / Timing Role: Output register latching command bits (e.g., relay on/off, valve open/close) under central clock control. Use Value: ±6 mA output drive directly switches optocouplers or small-signal relays without external transistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT564N | Identical logic function, pinout, and electrical specs; Texas Instruments variant in PDIP-20 package. | No functional deviation; validated for same industrial temperature range and 5 V operation. | Select when TI-sourced supply chain alignment or dual-sourcing strategy is required. |
| 74HCT574P-E | Same package and timing, but non-inverting outputs (Q only, no Q̅); OC pin behavior identical. | Requires redesign if downstream logic depends on inverted outputs; otherwise drop-in for Q-only use cases. | Choose when system requires true/non-inverted latched data and no complemented outputs are needed. |
Compared with SN74HCT564N and 74HCT574P-E, the 74HCT564P-E uniquely delivers inverting outputs in a pin-compatible DIP-20 footprint, enabling direct replacement where Q̅ signals drive enable/disable logic or differential bus termination without additional inverters.
Availability
74HCT564P-E is available at Aetrix Electronics and suitable for industrial data acquisition, legacy system bus interface, and programmable logic glue logic requiring stable component supply and long-term obsolescence management.
Supply support for 74HCT564P-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 automotive, industrial, and IoT applications.
The HD74HCT series delivers TTL-compatible CMOS logic devices optimized for robust 5 V industrial systems, emphasizing noise immunity, wide temperature operation, and seamless integration with legacy digital infrastructure.
FAQ
What is the logic function of the 74HCT564P-E?
The 74HCT564P-E is an octal D-type positive-edge-triggered flip-flop with inverting 3-state outputs. Each of its eight channels latches the D-input value on the rising edge of CLK and presents the complement (Q̅) at the corresponding output pin; the OC pin controls simultaneous high-impedance state for all outputs.
Does the 74HCT564P-E support 3.3 V operation?
No, the 74HCT564P-E is specified only for 4.5–5.5 V supply operation. Its input thresholds (VIH = 2.0 V min) and output drive characteristics are optimized for 5 V TTL/CMOS systems; it is not guaranteed functional at 3.3 V and may exhibit undefined behavior or excessive current draw outside its rated VCC range.
What is the maximum clock frequency supported by the 74HCT564P-E?
The 74HCT564P-E supports a maximum clock frequency of 30 MHz at 25°C (fmax = 30 MHz, VCC = 4.5 V, CL = 50 pF). At full industrial temperature range (–40°C to +85°C), the guaranteed minimum fmax is 24 MHz under the same conditions, per the switching characteristics table.
How does the output control (OC) pin behave on the 74HCT564P-E?
The OC pin on the 74HCT564P-E is active-high: when OC = HIGH, all eight Q and Q̅ outputs enter high-impedance (Z) state regardless of CLK or D input states. When OC = LOW, normal flip-flop operation resumes, and outputs reflect latched Q̅ values on the next rising clock edge.
Is the 74HCT564P-E RoHS compliant?
Yes, the 74HCT564P-E uses Ni/Pd/Au plating and conforms to RoHS Directive requirements. Package markings and Renesas documentation confirm lead-free construction and compliance with EU Restriction of Hazardous Substances regulations.
74HCT564P-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, Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 50 MHz
- Max Propagation Delay @ V, Max CL:
- 35ns @ 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:
- 10 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74HCT564P-E FAQ
1.How can I place an order for 74HCT564P-E through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT564P-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 74HCT564P-E reliable?
The price and inventory of 74HCT564P-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT564P-E is usually 5 days.
3.What payment methods are accepted for 74HCT564P-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT564P-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT564P-E?
74HCT564P-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT564P-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 74HCT564P-E?
For technical support, including 74HCT564P-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT564P-E requirements.
6.How does Aetrix verify that 74HCT564P-E is sourced from the original manufacturer or authorized distributors?
All 74HCT564P-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 74HCT564P-E meets industry standards.
7.What is the process for return or replacement of 74HCT564P-E?
All 74HCT564P-E units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT564P-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 74HCT564P-E part is unused and in its original packaging.
Return procedure for 74HCT564P-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT564P-E Tags
-
SN74HC74DR
Texas Instruments
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SN74HC74PWR
Texas Instruments
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74LVC1G74GT,115
Nexperia USA Inc.
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SN74LVC2G74DCUR
Texas Instruments
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CD4013BM96
Texas Instruments
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SN74HCT273PWR
Texas Instruments
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SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
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