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Nexperia USA Inc. 74HCT377D-Q100J
- Part No.:
- 74HCT377D-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74HCT377D-Q100J.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,982
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Product details
Overview
74HCT377D-Q100 from Nexperia is an automotive-grade octal positive-edge-triggered D-type flip-flop with data enable (E) input, operating across -40 °C to +125 °C, supporting 4.5 V to 5.5 V supply, TTL-compatible inputs, and eight synchronized Q outputs for parallel data latching in engine control units and ADAS domain controllers.
For engineers reviewing the 74HCT377D-Q100 datasheet, 74HCT377D-Q100 pinout, 74HCT377D-Q100 application, or 74HCT377D-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 12 ns typical propagation delay at 4.5 V, 22 ns set-up time, SO20 package pin compatibility, and E-input-controlled transparent latch behavior on rising clock edge.
Technical Context
This device implements eight independent D-type flip-flops sharing a common clock (CP) and a single active-low data enable (E). When E is LOW, each Qn output captures the corresponding Dn input on the LOW-to-HIGH transition of CP, provided setup and hold timing constraints are met.
Input levels conform to TTL thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V), enabling direct interfacing with legacy microcontroller GPIOs and ASIC drivers without level-shifting. Clamp diodes on all inputs support robustness against overvoltage transients up to ±20 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input thresholds, CMOS output drive, 5 V nominal operation |
| Operating Temperature | -40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood automotive use |
| Supply Voltage Range | 4.5 V to 5.5 V - Matches standard automotive 5 V rail with ±10% tolerance margin |
| Propagation Delay (tpd) | 17 ns (typ) at VCC = 4.5 V, CL = 50 pF - Enables reliable sampling at ≤22 MHz system clocks |
| Set-up Time (tsu) | 22 ns (min) for Dn/E to CP - Defines minimum data stability window before clock edge |
| Output Drive Strength | ±4.0 mA (VOH/VOL) at VCC = 4.5 V - Sufficient to drive 10 LSTTL loads or 20 pF PCB traces |
| Power Dissipation Capacitance | 20 pF - Used to calculate dynamic power: PD = CPD × VCC² × fi + Σ(CL × VCC² × fo) |
Pinout & Package
74HCT377D-Q100 is housed in a plastic small outline package (SO20), SOT163-1, with 20 leads and 7.5 mm body width. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E (Data Enable) | Active-LOW control: enables latching only when LOW; HIGH forces Q outputs to hold state |
| 2, 5, 6, 9, 12, 15, 16, 19 | Q0–Q7 | Eight complementary DFF outputs; driven HIGH/LOW based on sampled Dn at CP edge |
| 3, 4, 7, 8, 13, 14, 17, 18 | D0–D7 | Eight asynchronous data inputs; sampled only when E = LOW and CP rises |
| 10 | GND | Ground reference (0 V); must be low-impedance connection to minimize switching noise |
| 11 | CP | Clock input; triggers latching on LOW-to-HIGH transition; requires clean edge with <20 ns rise/fall |
| 20 | VCC | Positive supply (4.5–5.5 V); decoupling capacitor (100 nF) required within 5 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications requiring operation from -40 °C to +125 °C ambient |
| TTL-compatible input thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 4.5–5.5 V - Direct interface with 5 V microcontrollers and logic families |
| Clamp diode protection | Enables external current-limiting resistors for safe interfacing to voltages > VCC (e.g., 12 V sensor lines) |
| High noise immunity | Typical noise margin > 0.8 V at VCC = 5 V - Resists EMI-induced glitches in noisy vehicle environments |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - Ensures robustness against transient-induced parasitic thyristor conduction |
Applications
| Engine Control Unit (ECU) Input Capture | ADAS Camera Interface Buffer |
|---|---|
|
Use Scenario: Capturing synchronized analog-to-digital converter (ADC) sample strobes and sensor status flags in real-time engine timing loops. IC Role / Device Role / Timing Role: Octal DFF latches eight parallel diagnostic signals (e.g., knock sensor valid, cam position sync, throttle angle ready) on rising edge of ECU master clock. Use Value: Eliminates metastability risk during high-speed sampling by enforcing strict setup/hold timing, ensuring deterministic capture at up to 22 MHz clock rates. |
Use Scenario: Isolating and synchronizing parallel pixel data streams from dual-camera modules before feeding into image signal processor (ISP) FIFOs. IC Role / Device Role / Timing Role: Acts as a synchronous input register, aligning camera frame-valid and pixel-data bus signals to the ISP's internal clock domain using shared CP and E control. Use Value: Prevents inter-frame skew between left/right cameras by guaranteeing simultaneous latching of all eight data bits with <1 ns channel-to-channel skew. |
| Body Control Module (BCM) Relay Driver Interface | Automotive Infotainment Display Timing Controller |
|
Use Scenario: Driving eight discrete relay coils via ULN2003A arrays, where microcontroller GPIOs require debounced, glitch-free activation signals. IC Role / Device Role / Timing Role: Provides edge-triggered storage of relay ON/OFF commands, decoupling MCU software execution from hardware actuation timing. Use Value: Enables precise pulse-width modulation (PWM) of relay drive duration via E-gated clocking, reducing coil thermal stress and contact arcing. |
Use Scenario: Latching RGB video control signals (HSYNC, VSYNC, DE, and three color enable bits) from SoC display controller to panel timing IC. IC Role / Device Role / Timing Role: Serves as a synchronous interface bridge, converting burst-mode SoC output into stable, jitter-reduced control signals for LCD/OLED timing generators. Use Value: Suppresses display artifacts (tearing, flicker) by eliminating race conditions between SoC output transitions and panel controller sampling edges. |
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 |
|---|---|---|---|
| 74HC377D-Q100 | CMOS input thresholds (VIH ≥ 3.15 V at VCC = 4.5 V); higher propagation delay (16 ns typ) | Better suited for mixed-voltage systems with 3.3 V logic driving 5 V rails | Select when interfacing with 3.3 V microcontrollers or FPGAs without level shifters |
| SN74LVC8T245RHLR | Configurable 8-bit bus transceiver with direction control; no built-in clock or data enable | Requires external clock generation and control logic; supports bidirectional data flow | Choose only if level translation (1.8 V ↔ 5 V) and direction flexibility outweigh need for integrated clocked storage |
Compared with 74HC377D-Q100, the HCT variant offers tighter timing margins for TTL-driven systems, while SN74LVC8T245RHLR trades integrated latching for voltage translation capability-making it unsuitable as a drop-in replacement but viable where bidirectional isolation is required.
Availability
74HCT377D-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS camera interfaces, body control modules, and infotainment display timing circuits requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74HCT377D-Q100 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
Nexperia is a global semiconductor expert delivering high-performance, reliable logic, discrete, and MOSFET solutions optimized for automotive, industrial, and consumer applications.
The 74HCT377-Q100 series belongs to Nexperia's automotive-qualified logic portfolio, designed specifically to meet stringent AEC-Q100 requirements for functional safety-critical subsystems in modern vehicles.
FAQ
Is 74HCT377D-Q100 pin-compatible with non-automotive 74HCT377 variants?
Yes - the SO20 (SOT163-1) package and pinout are identical across all 74HCT377 variants, including commercial-grade 74HCT377N and industrial 74HCT377PW. However, only the -Q100 suffix indicates full AEC-Q100 Grade 1 qualification, including extended temperature validation and process change notifications.
What is the maximum clock frequency supported at 125 °C ambient?
At Tamb = +125 °C and VCC = 4.5 V, the maximum guaranteed clock frequency is 18 MHz, derived from the 22 ns minimum pulse width (tW) specification. This ensures reliable operation in under-hood environments where thermal derating affects timing margins.
Can the E (enable) input be used for synchronous reset functionality?
No - E is not a synchronous reset. When E is HIGH, outputs retain their last latched state regardless of CP activity. To implement synchronous reset, external logic (e.g., NAND gate combining E and CP) must force Dn = 0 during the active clock edge; the device itself has no dedicated reset input.
Does 74HCT377D-Q100 support hot insertion or live insertion into powered systems?
No - the device lacks Ioff (power-off protection) or live-insertion circuitry. Applying signals to inputs while VCC is unpowered may forward-bias internal clamp diodes, causing excessive current flow and potential damage. Power sequencing must ensure VCC is stable before applying any input signals.
74HCT377D-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 53 MHz
- Max Propagation Delay @ V, Max CL:
- 32ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 5.2mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74HCT377D-Q100J FAQ
1.How can I place an order for 74HCT377D-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT377D-Q100J 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 74HCT377D-Q100J reliable?
The price and inventory of 74HCT377D-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT377D-Q100J is usually 5 days.
3.What payment methods are accepted for 74HCT377D-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT377D-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT377D-Q100J?
74HCT377D-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT377D-Q100J 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 74HCT377D-Q100J?
For technical support, including 74HCT377D-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT377D-Q100J requirements.
6.How does Aetrix verify that 74HCT377D-Q100J is sourced from the original manufacturer or authorized distributors?
All 74HCT377D-Q100J 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 74HCT377D-Q100J meets industry standards.
7.What is the process for return or replacement of 74HCT377D-Q100J?
All 74HCT377D-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT377D-Q100J, 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 74HCT377D-Q100J part is unused and in its original packaging.
Return procedure for 74HCT377D-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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