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NXP Semiconductors 74LV377PW,112
- Part No.:
- 74LV377PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LV377PW,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,358
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Product details
Overview
74LV377PW,112 from NXP Semiconductors (formerly Philips) is an octal positive-edge-triggered D-type flip-flop with active-low data enable, designed for low-voltage addressable register and data synchronization applications. It operates from 1.0 V to 3.6 V, delivers 77 MHz maximum clock frequency at VCC = 3.3 V, features eight independent D inputs and Q outputs, and supports TTL-level inputs at VCC ≥ 2.7 V.
For engineers reviewing the 74LV377PW,112 datasheet, 74LV377PW,112 pinout, 74LV377PW,112 application, or 74LV377PW,112 equivalent, key selection criteria include its 20-pin TSSOP package, 13 ns typical propagation delay (CP to Qn), –40°C to +125°C operating range, and functional compatibility with 74HC/HCT377 in low-voltage systems requiring deterministic edge-triggered latching.
Technical Context
The 74LV377PW,112 implements eight synchronous D-type flip-flops sharing a common clock (CP) and a single active-low data enable (E). All outputs update on the LOW-to-HIGH transition of CP only when E is LOW; otherwise, outputs retain state regardless of clock edges.
Its CMOS design ensures low dynamic power dissipation (20 pF CPD per flip-flop), robust noise immunity (VIH = 2.0 V min at VCC = 2.7–3.6 V), and controlled output drive (6 mA sink/source capability at VCC = 3.0 V), making it suitable for bus-hold-free, high-density logic interfacing in industrial and embedded control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.0 V to 3.6 V - Enables operation across battery-powered, mixed-supply, and legacy 3.3 V systems without level shifters. |
| fmax | 77 MHz at VCC = 3.3 V - Supports high-speed data capture in microcontroller peripheral interfaces and memory address latching. |
| tPHL/tPLH | 13 ns typical (CL = 15 pF, VCC = 3.3 V) - Ensures tight timing margins for synchronous control paths with sub-20 ns setup windows. |
| tsu(Dn→CP) | 13 ns min at VCC = 3.0–3.6 V - Defines minimum data stability window before clock edge for reliable register loading. |
| IO Sink/Source | ±6 mA at VCC = 3.0 V - Drives standard TTL loads directly and interfaces with 74-series logic without external buffers. |
| Operating Temp | –40°C to +125°C - Qualified for under-hood automotive, industrial PLC, and outdoor equipment environments. |
| CI | 3.5 pF - Minimizes capacitive loading on driving gates, preserving signal integrity in fan-out-critical designs. |
Pinout & Package
74LV377PW,112 is housed in a 20-pin plastic thin shrink small outline package (TSSOP Type I), SOT360-1, with 0.65 mm lead pitch and 4.4 mm body width - optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E | Active-low data enable - must be LOW to load Dn inputs into Qn outputs on next CP rising edge; HIGH holds all outputs unchanged. |
| 2,5,6,9,12,15,16,19 | Q0–Q7 | True (non-inverted) registered outputs - reflect Dn states sampled one setup time before CP rising edge. |
| 3,4,7,8,13,14,17,18 | D0–D7 | Asynchronous data inputs - sampled only when E is LOW and CP rises; no internal latching outside clock event. |
| 10 | GND | Ground reference - must be connected to system 0 V plane; decoupling capacitor required near pin for noise suppression. |
| 11 | CP | Clock input - LOW-to-HIGH transition triggers simultaneous sampling of all enabled D inputs; edge-sensitive, not level-sensitive. |
| 20 | VCC | Positive supply - supplies core logic and output drivers; requires local 100 nF ceramic decoupling between pins 10 and 20. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.0 V | Enables direct integration into 1.2 V or 1.8 V FPGA I/O banks and ultra-low-power microcontrollers without voltage translation. |
| TTL-input compatibility at VCC ≥ 2.7 V | Accepts standard 5 V-tolerant or 3.3 V TTL outputs (VOH ≥ 2.0 V) without external pull-ups or level shifters. |
| Standard-output drive (±6 mA) | Directly drives 74-series TTL inputs, LED indicators, and small-signal MOSFET gates without buffer stages. |
| Pin/function compatibility with 74HC/HCT377 | Allows drop-in replacement in existing 74HC377 or 74HCT377 designs when migrating to lower supply voltages. |
| Output ground bounce (VOLP) ≤ 0.8 V | Reduces switching noise coupling into analog sections or sensitive ADC references during parallel output transitions. |
Applications
| Microcontroller Address Latching | Industrial I/O Expansion |
|---|---|
Use Scenario: Latching 8-bit address/data bus signals from an 8051 or ARM Cortex-M microcontroller to interface with external SRAM or peripherals. IC Role / Device Role / Timing Role: Synchronous address register - captures and holds address bits on CP edge while E enables transfer from multiplexed AD bus. Use Value: Eliminates need for discrete latches or CPLD glue logic; supports 77 MHz burst access timing with deterministic 13 ns propagation delay. | Use Scenario: Expanding digital I/O count on programmable logic controllers (PLCs) handling sensor inputs and actuator outputs. IC Role / Device Role / Timing Role: Input synchronizer and output latch - E coordinates sampling of asynchronous field signals, CP aligns updates to PLC scan cycle. Use Value: Provides noise-immune, temperature-stable registration across –40°C to +125°C ambient, meeting IEC 61000-4-2/4-4 compliance requirements. |
| Memory Interface Buffering | Test Equipment Pattern Generation |
Use Scenario: Isolating and buffering address lines between a high-speed memory controller and slower SRAM chips in test instrumentation. IC Role / Device Role / Timing Role: Level-shifting register - translates 1.8 V controller outputs to 3.3 V SRAM-compatible levels while adding setup/hold margin. Use Value: Leverages 1.0–3.6 V VCC range and TTL-input compatibility to bridge voltage domains without dedicated level translators. | Use Scenario: Generating repeatable 8-bit stimulus patterns synchronized to a master clock in automated test equipment (ATE) fixtures. IC Role / Device Role / Timing Role: Deterministic pattern register - E gates pattern loading, CP advances sequence on precise edge, Q outputs drive DUT pins. Use Value: Delivers 13 ns max skew between Q outputs and <5 ns hold time margin, ensuring glitch-free vector delivery at 77 MHz. |
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 |
|---|---|---|---|
| 74LVX377M | Same logic function and pinout; uses LVX (lower-threshold) input structure; VIH = 1.7 V min at VCC = 3.0 V vs. 2.0 V for 74LV377PW,112. | Better suited for mixed 2.5 V/3.3 V systems where driving sources have marginal VOH; less noise margin in pure 3.3 V TTL environments. | Select 74LVX377M when interfacing with 2.5 V ASICs or low-VTH FPGAs; retain 74LV377PW,112 for legacy 3.3 V TTL compatibility. |
| SN74LVC377APWR | TSSOP-20 package; identical 1.65–3.6 V VCC range; fmax = 150 MHz; tPD = 5.5 ns; higher drive (24 mA). | Higher speed and drive support faster memory interfaces and heavier capacitive loads but increases power and EMI risk in noise-sensitive systems. | Choose SN74LVC377APWR for >100 MHz clock domains or >15 pF net capacitance; prefer 74LV377PW,112 for cost-sensitive, low-noise, or extended-temp industrial use. |
Compared with 74LVX377M and SN74LVC377APWR, the 74LV377PW,112 offers optimal balance of TTL compatibility, industrial temperature range, and low ground bounce - making it preferred for legacy-system upgrades and noise-critical industrial control where 77 MHz performance suffices.
Availability
74LV377PW,112 is available at Aetrix Electronics and suitable for microcontroller address latching, industrial I/O expansion, memory interface buffering, and test equipment pattern generation requiring stable component supply across extended temperature ranges.
Supply support for 74LV377PW,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
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic and analog IC development.
The 74LV377PW,112 belongs to NXP's legacy LV (Low Voltage) logic family, engineered for energy-efficient, pin-compatible migration from 5 V TTL and 74HC logic into 3.3 V and sub-3 V systems while maintaining industrial-grade reliability.
FAQ
What is the recommended decoupling strategy for 74LV377PW,112?
Place a 100 nF X7R ceramic capacitor between VCC (pin 20) and GND (pin 10), located within 5 mm of the package. For systems with multiple 74LV377PW,112 devices, add a 4.7 µF tantalum capacitor per power rail segment. This suppresses ground bounce (VOLP ≤ 0.8 V) and ensures stable 13 ns propagation delay across temperature.
Is 74LV377PW,112 pin-compatible with 74HC377 in a PCB layout?
Yes - 74LV377PW,112 shares identical pin configuration, function mapping, and 20-pin TSSOP footprint (SOT360-1) with 74HC377 variants in same package. No PCB redesign is needed when replacing 74HC377 with 74LV377PW,112, provided VCC is adjusted to 1.0–3.6 V and timing margins accommodate 13 ns tPD.
Can 74LV377PW,112 operate reliably at 1.2 V supply?
Yes - 74LV377PW,112 is fully specified down to VCC = 1.2 V for DC characteristics and functional operation. At 1.2 V, fmax drops to ~25 MHz and tPD increases to ~80 ns, but VIH/VIL thresholds remain valid, enabling use in ultra-low-power sensor nodes and energy-harvesting systems.
What is the maximum capacitive load CL supported by 74LV377PW,112 at 77 MHz?
74LV377PW,112 maintains 77 MHz operation up to CL = 15 pF per output, as verified in the Quick Reference Data table. Driving >15 pF requires derating fmax - e.g., at CL = 50 pF, fmax falls to ~30 MHz. Always verify signal integrity with oscilloscope measurements on actual board traces.
Does 74LV377PW,112 support hot insertion or live insertion into a powered backplane?
No - 74LV377PW,112 lacks hot-swap protection circuitry. Absolute maximum ratings specify ±20 mA input diode current only for transient conditions; sustained hot insertion risks latch-up or permanent damage due to uncontrolled VCC/GND sequencing. Power-cycle the system before inserting or removing 74LV377PW,112.
74LV377PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LV
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 70 MHz
- Max Propagation Delay @ V, Max CL:
- 30ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 6mA, 6mA
- Voltage - Supply:
- 1V ~ 3.6V
- Current - Quiescent (Iq):
- 20 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LV377PW,112 FAQ
1.How can I place an order for 74LV377PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV377PW,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 74LV377PW,112 reliable?
The price and inventory of 74LV377PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV377PW,112 is usually 5 days.
3.What payment methods are accepted for 74LV377PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV377PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV377PW,112?
74LV377PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV377PW,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 74LV377PW,112?
For technical support, including 74LV377PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV377PW,112 requirements.
6.How does Aetrix verify that 74LV377PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LV377PW,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 74LV377PW,112 meets industry standards.
7.What is the process for return or replacement of 74LV377PW,112?
All 74LV377PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV377PW,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 74LV377PW,112 part is unused and in its original packaging.
Return procedure for 74LV377PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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