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NXP Semiconductors 74AHC377D,112
- Part No.:
- 74AHC377D,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74AHC377D,112.pdf
- Description:
- IC D-TYPE POS TRG SNGL 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,803
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Product details
Overview
74AHC377D,112 from Nexperia is an octal positive-edge-triggered D-type flip-flop with individual data inputs (D0–D7), corresponding Q outputs (Q0–Q7), a common clock (CP), and a single active-low data enable (E). It operates across −40 °C to +125 °C, supports 2.0–5.5 V supply, and delivers 11.5 ns max propagation delay at 5 V/50 pF load. It is used in addressable register applications requiring synchronized parallel data latching.
For engineers reviewing the 74AHC377D,112 datasheet, 74AHC377D,112 pinout, 74AHC377D,112 application, or 74AHC377D,112 equivalent, this device serves as a high-speed, CMOS-level-compatible register for microcontroller I/O expansion, bus interface synchronization, and control logic state capture where deterministic edge-triggered behavior and low static current (<80 µA) are required.
Technical Context
The 74AHC377D,112 implements eight independent D-type flip-flops sharing one clock input (CP) and one global data enable (E). All flip-flops trigger on the LOW-to-HIGH transition of CP, provided E is LOW one setup time prior - enabling simultaneous loading of eight bits with precise timing control. Its Schmitt-trigger inputs improve noise immunity on slow or noisy control lines.
It complies with JEDEC Std 7-A and is pin compatible with LSTTL. Input voltage tolerance extends beyond VCC (−0.5 V to +7.0 V), and ESD protection exceeds 2000 V HBM. The device is specified for industrial and extended-temperature operation (−40 °C to +125 °C) in SO20 (SOT163-1) package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | AHC - Advanced High-Speed CMOS, TTL-compatible output drive, CMOS-level inputs |
| Supply Voltage Range | 2.0 V to 5.5 V - Enables direct interfacing with 3.3 V and 5 V systems without level shifters |
| Max Propagation Delay (CP→Q) | 11.5 ns at VCC = 5.5 V, CL = 50 pF - Supports >85 MHz operation in synchronous register chains |
| Set-up / Hold Time | 4.5 ns / 2.0 ns (at 5 V) - Defines minimum data stability window before and after CP edge for reliable sampling |
| Input Voltage Tolerance | −0.5 V to +7.0 V - Allows safe interfacing with overvoltage-tolerant or mixed-voltage control signals |
| ESD Protection | HBM >2000 V, CDM >1000 V - Reduces risk of field failure during handling and board assembly |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive, industrial PLC, and high-reliability embedded use |
Pinout & Package
74AHC377D,112 is supplied 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 bevel; the package is RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (E) | Data enable input | Active-LOW global latch enable - all eight flip-flops load only when E = LOW at CP edge |
| 2–9, 12, 15–19 (Q0–Q7) | Flip-flop outputs | Eight buffered, non-inverted registered outputs - each tracks its D input after CP edge if E is asserted |
| 3–4, 7–8, 13–14, 17–18 (D0–D7) | Data inputs | Eight independent asynchronous data inputs - sampled on rising CP edge when E is LOW |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and output drivers - must be low-impedance for noise control |
| 11 (CP) | Clock input | Positive-edge-triggered master clock - synchronizes all eight registers simultaneously |
| 20 (VCC) | Supply voltage | Primary power rail - powers internal logic and output stages; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Eight edge-triggered D-type flip-flops | Enables parallel capture of 8-bit data streams (e.g., address/data buses) with single-clock coordination |
| Schmitt-trigger inputs | Improves noise margin on E and CP lines - prevents false triggering from slow-rising or noisy control signals |
| Data enable (E) control | Allows selective latching: hold E HIGH to freeze outputs regardless of CP activity - critical for gated register operation |
| Wide supply range (2.0–5.5 V) | Supports mixed-voltage system integration - interoperable with both 3.3 V microcontrollers and legacy 5 V peripherals |
| High ESD robustness | HBM >2000 V ensures reliability during PCB handling, automated assembly, and field deployment in harsh environments |
Applications
| Microcontroller I/O Expansion | Parallel Bus Interface Synchronization |
|---|---|
|
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU to drive 8-bit LED matrix or segment displays. IC Role / Device Role / Timing Role: Acts as an 8-bit output latch - holds display data stable while MCU refreshes other peripherals. Use Value: Eliminates need for software bit-banging; enables glitch-free updates using single CP pulse synchronized with E control. |
Use Scenario: Capturing 8-bit status flags from a sensor array into a microcontroller's memory-mapped I/O space. IC Role / Device Role / Timing Role: Provides synchronized, metastability-resistant registration of parallel sensor outputs before CPU read. Use Value: Guarantees atomic 8-bit reads - avoids partial updates due to skew between signal lines or clock domain crossing. |
| Industrial Control Logic Register | Addressable Memory Address Latch |
|
Use Scenario: Storing 8-bit configuration settings (e.g., DAC gain, filter cutoff) in a programmable logic controller (PLC) module. IC Role / Device Role / Timing Role: Functions as a non-volatile shadow register - updated via serial interface then latched to outputs on command. Use Value: Decouples configuration update timing from real-time control loop - ensures deterministic output changes on CP edge. |
Use Scenario: Latching lower 8 bits of a 16-bit address bus in an 8051-based system with external RAM. IC Role / Device Role / Timing Role: Serves as A0–A7 address latch - freezes address lines during memory access cycle while data transfers. Use Value: Meets 8051 ALE timing requirements; eliminates address bus contention and reduces external logic count. |
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 |
|---|---|---|---|
| 74AHCT377D,112 | TTL-level inputs (VIH = 2.0 V min); identical pinout, timing, and SO20 package | Better compatibility with legacy 5 V TTL logic families; higher input drive requirement than AHC | Select when interfacing directly with 74LS or 74F series outputs without level translation |
| SN74AHC377N | Same AHC logic family and function, but in PDIP-20 package (not SO20); slightly higher ICC (max 100 µA) | Suitable for prototyping or through-hole designs; lacks SO20's thermal and space advantages | Choose for breadboard evaluation or legacy through-hole PCBs where SO20 reflow is unavailable |
Compared with 74AHC377D,112, the 74AHCT377D,112 offers TTL-compatible inputs for seamless integration with older logic, while SN74AHC377N provides identical functionality in through-hole form - neither is pin-compatible with 74AHC377D,112's SO20 footprint, making them functional alternatives rather than drop-in replacements.
Availability
74AHC377D,112 is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and embedded computing platforms requiring stable component supply, extended temperature support, and high-noise-margin digital registration.
Supply support for 74AHC377D,112 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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with a focus on efficiency, reliability, and automotive-grade qualification.
The 74AHC377D,112 belongs to Nexperia's AHC logic family - engineered for high-speed, low-power, and robust operation in industrial and automotive applications where precise timing and wide supply tolerance are essential.
FAQ
What is the maximum operating frequency of the 74AHC377D,112?
The 74AHC377D,112 supports up to 110 MHz maximum clock frequency at VCC = 5.0 V with 15 pF load, and 75 MHz at 50 pF load. These values assume proper PCB layout, decoupling, and signal integrity - actual system-level frequency may be limited by board parasitics and fan-out.
Does the 74AHC377D,112 have a reset or clear function?
No, the 74AHC377D,112 does not include asynchronous or synchronous reset/clear inputs. It is a pure edge-triggered register with data enable (E) only. For reset capability, consider the pin-compatible 74AHC273D,112, which adds a master reset (MR) input.
Can the 74AHC377D,112 operate at 3.3 V supply?
Yes, the 74AHC377D,112 is fully specified for 3.3 V operation (VCC = 3.0–3.6 V), delivering typical propagation delay of 5.6 ns and supporting 125 MHz fmax at 15 pF load. Its CMOS inputs accept 3.3 V logic levels natively.
Is the 74AHC377D,112 pin-compatible with 74LS377?
Yes - the 74AHC377D,112 is explicitly designed as a pin- and function-compatible replacement for 74LS377, offering superior speed, lower power, and wider supply range while maintaining identical SO20 pinout and logic behavior.
What is the purpose of the Schmitt-trigger inputs on the 74AHC377D,112?
The Schmitt-trigger action on all inputs (including CP and E) provides hysteresis, increasing noise immunity on slow-rising or electrically noisy control lines. This prevents multiple unintended clock edges or enable toggles caused by signal ringing or crosstalk - critical in industrial or automotive environments.
74AHC377D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74AHC377D,112 FAQ
1.How can I place an order for 74AHC377D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC377D,112 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 74AHC377D,112 reliable?
The price and inventory of 74AHC377D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC377D,112 is usually 5 days.
3.What payment methods are accepted for 74AHC377D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC377D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC377D,112?
74AHC377D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC377D,112 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 74AHC377D,112?
For technical support, including 74AHC377D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC377D,112 requirements.
6.How does Aetrix verify that 74AHC377D,112 is sourced from the original manufacturer or authorized distributors?
All 74AHC377D,112 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 74AHC377D,112 meets industry standards.
7.What is the process for return or replacement of 74AHC377D,112?
All 74AHC377D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC377D,112, 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 74AHC377D,112 part is unused and in its original packaging.
Return procedure for 74AHC377D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHC377D,112 Tags
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74LVC1G74GT,115
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SN74HC574DWR
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