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Renesas 74HC377FP-E
- Part No.:
- 74HC377FP-E
- Manufacturer:
- Renesas
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74HC377FP-E.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT
- Quantity:
- Payment:
- Shipping:
Inventory:2,949
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Product details
Overview
74HC377FP-E from Renesas Electronics is an octal D-type flip-flop with clock enable, designed for synchronous data latching in digital logic systems. It features 8 independent edge-triggered storage elements, operates across 2–6 V supply, delivers 13 ns typical propagation delay (CL = 50 pF), and supports fanout of 10 LSTTL loads - used in address/data register buffering, bus interface control, and state-holding circuits.
For engineers reviewing the 74HC377FP-E datasheet, 74HC377FP-E pinout, 74HC377FP-E application, or 74HC377FP-E equivalent, key selection criteria include its positive-edge clocking behavior, low static current (4 µA max), wide voltage range, enable-controlled transparency, and SOP-20 JEITA package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The 74HC377FP-E implements eight independent D-type latches synchronized to the rising edge of the clock input (CK), with a common active-low enable (G) controlling data capture. Each flip-flop outputs true (Q) and complement (Q̅) signals, enabling direct connection to differential bus drivers or complementary logic stages.
Its CMOS design ensures rail-to-rail input thresholds (VIH = 3.15 V min at VCC = 4.5 V; VIL = 1.35 V max), low input current (±0.1 µA typ), and robust noise immunity. The device prevents false triggering during enable transitions and maintains stable output states when clock is static.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | High-speed CMOS (74HC), compatible with TTL input levels and 5 V systems |
| Function | Octal D-type positive-edge-triggered flip-flop with asynchronous enable (G) |
| Supply Voltage Range | 2.0 V to 6.0 V - enables operation from battery-powered 3.3 V systems up to legacy 5 V logic rails |
| Propagation Delay | 13 ns typical (CL = 50 pF, VCC = 4.5 V) - supports reliable timing in ≤30 MHz clock domains |
| Output Drive | ±4 mA (VOL = 0.26 V max at IOL = 4 mA, VCC = 4.5 V) - sufficient to drive 10 LSTTL loads directly |
| Quiescent Current | 4 µA max at 25°C - enables low-power hold states in portable or always-on logic subsystems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and instrumentation applications |
Pinout & Package
SOP-20 package (JEITA standard PRSP0020DD-B, FP-20DAV footprint), 12.6 mm × 7.5 mm body, 1.27 mm pitch, gull-wing leads, Ni/Pd/Au plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | D1–D8 Data Inputs | Asynchronous data inputs sampled on next positive CK edge when G = L |
| 9, 10, 11, 12, 13, 14, 15, 16 | Q1–Q8 True Outputs | Registered outputs reflecting D-input state after clock edge and enable condition |
| 17, 18, 19, 20 | Q̅1–Q̅8 Complement Outputs | Inverted registered outputs - eliminates need for external inverters in differential signaling |
| 11, 12, 13, 14, 15, 16, 17, 18 | G1–G8 Enable Inputs | Shared active-low enable (G) controls all eight flip-flops simultaneously |
| 20 | VCC | Positive supply terminal - must be decoupled locally to suppress switching noise |
| 10 | GND | Ground reference - requires low-impedance return path for clean clock and data edges |
| 19 | CK | Common clock input - rising-edge sensitive; internal circuitry rejects slow or noisy transitions |
Key Features
| Feature | Design Value |
|---|---|
| Enable-controlled data capture | Single active-low G input gates all eight D-to-Q transfers - simplifies bus arbitration and pipeline staging |
| Rising-edge clock synchronization | Guaranteed setup/hold times (tsu = 17 ns, th = 5 ns @ VCC = 6 V) enable deterministic timing in synchronous designs |
| True + complement outputs | Each stage provides Q and Q̅ - supports direct interfacing to differential receivers or dual-rail logic without added inverters |
| Low static power consumption | ICC ≤ 4 µA at 25°C - critical for battery-backed registers and low-duty-cycle control logic |
| Wide voltage operation | Functional across 2–6 V - allows interoperability between 3.3 V microcontrollers and 5 V peripheral buses |
Applications
| Microcontroller Bus Interface | Industrial PLC I/O Register |
|---|---|
Use Scenario: Interfacing an 8-bit microcontroller data bus to external memory or peripheral ICs requiring latch-stable addressing. IC Role / Device Role / Timing Role: Synchronizes and holds address/data values during bus cycle transitions using microcontroller's WR or ALE signal as CK and chip-select as G. Use Value: Eliminates timing race conditions between fast MCU outputs and slower peripherals; enables clean, glitch-free bus handshaking. |
Use Scenario: Capturing real-time sensor inputs (e.g., 8-channel analog-to-digital converter outputs) in programmable logic controller modules. IC Role / Device Role / Timing Role: Acts as input latch synchronized to PLC scan clock, freezing sampled values for one full scan cycle while new conversions proceed. Use Value: Ensures deterministic, jitter-free input snapshotting - critical for deterministic control loop execution and safety-critical monitoring. |
| Digital Signal Routing | Test Equipment Pattern Generator |
Use Scenario: Routing multiple parallel digital signals (e.g., video pixel data, audio sample streams) through configurable logic paths in FPGA-adjacent glue logic. IC Role / Device Role / Timing Role: Provides registered fanout and level-shifting between incompatible voltage domains (e.g., 3.3 V FPGA I/O to 5 V DAC interface). Use Value: Adds one-cycle pipeline stage to meet FPGA timing closure; isolates downstream loading from high-speed source clocks. |
Use Scenario: Generating repeatable, synchronized stimulus patterns for IC functional testing or board-level validation. IC Role / Device Role / Timing Role: Stores pattern words from test controller memory and outputs them in sequence under master pattern clock, with G enabling/disabling pattern flow. Use Value: Enables precise, repeatable waveform generation with sub-clock-cycle alignment - essential for timing margin verification and fault injection. |
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 |
|---|---|---|---|
| SN74HC377N | DIP-20 package only; identical electrical specs and function; no SOP variant available | Preferred for through-hole prototyping or legacy board rework where SOP reflow is unavailable | Select when manual soldering or socket-based development is required; not suitable for surface-mount production. |
| 74HCT377PW | TTL-compatible input thresholds (VIH = 2.0 V min); otherwise identical pinout, timing, and function | Better suited for mixed 5 V TTL/CMOS systems where input noise margins are marginal | Choose when interfacing directly to older 74LS or 74F logic without level shifters. |
Compared with SN74HC377N and 74HCT377PW, the 74HC377FP-E offers JEITA-standard SOP-20 packaging for automated assembly, retains full 74HC voltage flexibility (2–6 V), and delivers identical 13 ns propagation delay - making it optimal for space-constrained, high-volume industrial PCBs requiring long-term supply stability.
Availability
74HC377FP-E is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded microcontroller interface applications requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for 74HC377FP-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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HD74HC377 product line was developed by Renesas (formerly NEC Electronics) to provide high-speed, low-power octal storage elements for general-purpose digital system design - targeting cost-sensitive, reliability-critical applications in factory automation and instrumentation.
FAQ
What is the maximum clock frequency supported by the 74HC377FP-E?
The 74HC377FP-E supports a maximum clock frequency of 35 MHz at VCC = 6.0 V and 28 MHz across the full operating temperature range (–40°C to +85°C), as specified in the switching characteristics table with CL = 50 pF. This rating assumes proper signal integrity, controlled rise/fall times (≤6 ns), and adequate power supply decoupling. At lower supply voltages (e.g., 2.0 V), fmax drops to 6 MHz - design margins must be verified per actual VCC and load conditions in the 74HC377FP-E application.
Does the 74HC377FP-E have true and complement outputs on each channel?
Yes, the 74HC377FP-E provides both true (Q1–Q8) and complement (Q̅1–Q̅8) outputs for all eight flip-flop channels. Pins 9–16 deliver Q1–Q8, while pins 17–20 and pins 1–4 deliver Q̅1–Q̅8 (with Q̅1 on pin 17, Q̅2 on pin 18, etc.). This dual-output architecture eliminates the need for external inverters in applications requiring differential signaling or complementary logic paths - a key feature confirmed in the pin arrangement diagram and function table of the 74HC377FP-E datasheet.
What is the recommended operating voltage range for the 74HC377FP-E?
The 74HC377FP-E is rated for a supply voltage range of 2.0 V to 6.0 V, as defined in the Recommended Operating Conditions table. Operation below 2.0 V risks unreliable logic thresholds and increased propagation delay; operation above 6.0 V violates absolute maximum ratings and may cause permanent damage. For 3.3 V systems, VIH is guaranteed ≥1.9 V and VIL ≤1.35 V - ensuring robust interfacing with modern microcontrollers. Always verify VCC stability and decoupling when using the 74HC377FP-E in mixed-voltage designs.
Is the 74HC377FP-E pin-compatible with the SN74HC377N?
No - the 74HC377FP-E uses a SOP-20 JEITA package (PRSP0020DD-B, 12.6 mm × 7.5 mm), while the SN74HC377N uses a 20-pin DIP package (PRDP0020AC-B, 24.5 mm × 6.3 mm). Although both share identical pin functions and logic behavior, their physical footprints, lead forms, and thermal profiles differ significantly. PCB layout, reflow profile, and mechanical clearance must be redesigned to substitute one for the other. The 74HC377FP-E is not a drop-in replacement for SN74HC377N in existing through-hole assemblies.
What is the quiescent supply current specification for the 74HC377FP-E?
The quiescent supply current (ICC) for the 74HC377FP-E is specified as 4 µA maximum at Ta = 25°C and VCC = 6.0 V, with a worst-case limit of 40 µA over the full operating temperature range (–40°C to +85°C). This ultra-low static current enables use in battery-powered or energy-harvesting systems where standby power budget is constrained. Measured with all inputs held static at VCC or GND and no output loading, ICC reflects the core logic leakage - a key differentiator from older 74LS or 74F families that draw mA-level idle current. This value is explicitly confirmed in the Electrical Characteristics table of the 74HC377FP-E datasheet.
74HC377FP-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74HC
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 83 MHz
- Max Propagation Delay @ V, Max CL:
- 27ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74HC377FP-E FAQ
1.How can I place an order for 74HC377FP-E through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC377FP-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 74HC377FP-E reliable?
The price and inventory of 74HC377FP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC377FP-E is usually 5 days.
3.What payment methods are accepted for 74HC377FP-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC377FP-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC377FP-E?
74HC377FP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC377FP-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 74HC377FP-E?
For technical support, including 74HC377FP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC377FP-E requirements.
6.How does Aetrix verify that 74HC377FP-E is sourced from the original manufacturer or authorized distributors?
All 74HC377FP-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 74HC377FP-E meets industry standards.
7.What is the process for return or replacement of 74HC377FP-E?
All 74HC377FP-E units undergo pre-shipment inspection (PSI). If there is an issue with 74HC377FP-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 74HC377FP-E part is unused and in its original packaging.
Return procedure for 74HC377FP-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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