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NXP Semiconductors 74LV377DB,112
- Part No.:
- 74LV377DB,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74LV377DB,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,848
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Product details
Overview
74LV377DB,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 applications operating from 1.0 V to 3.6 V supply. It features eight independent D inputs and Q outputs, 13 ns propagation delay at VCC = 3.3 V, 77 MHz maximum clock frequency, and standard-output drive capability.
For engineers reviewing the 74LV377DB,112 datasheet, 74LV377DB,112 pinout, 74LV377DB,112 application, or 74LV377DB,112 equivalent, key selection considerations include its LV-family voltage compatibility (1.0–3.6 V), TTL-input-level acceptance at VCC ≥ 2.7 V, edge-triggered synchronization behavior, and SSOP-20 package footprint for space-constrained logic interfacing.
Technical Context
The 74LV377DB,112 implements eight identical CMOS D-type flip-flops sharing a common clock (CP) and a single active-low data enable (E). All outputs update synchronously on the LOW-to-HIGH transition of CP when E is LOW; otherwise, outputs retain state regardless of CP transitions.
Its input thresholds are specified across VCC = 1.2 V to 3.6 V, with VIH = 0.9 V (min) at VCC = 1.2 V and VIH = 2.0 V (min) at VCC ≥ 2.7 V. Output drive meets standard logic levels: VOH ≥ 2.4 V (min) at IO = –6 mA and VCC = 3.0 V; VOL ≤ 0.4 V (max) at IO = 6 mA and VCC = 3.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.0 V to 3.6 V - supports battery-powered and mixed-voltage systems without level shifters |
| Propagation Delay (tPHL/tPLH) | 13 ns @ VCC = 3.3 V, CL = 15 pF - enables reliable timing in high-speed address/data latching |
| Max Clock Frequency (fmax) | 77 MHz @ VCC = 3.3 V - suitable for fast synchronous bus interfaces up to ~13 ns cycle time |
| Input Capacitance (CI) | 3.5 pF - minimizes loading on preceding drivers and preserves signal integrity |
| Power Dissipation Cap. (CPD) | 20 pF per flip-flop - used to calculate dynamic power: PD = CPD × VCC² × fi |
| Operating Temp Range | –40°C to +125°C - qualified for industrial and automotive under-hood environments |
| Output Drive | ±25 mA - standard-output capability compatible with 74HC/HCT loading requirements |
Pinout & Package
74LV377DB,112 is housed in a 20-pin plastic shrink small outline package (SSOP Type II), body width 5.3 mm, pitch 0.65 mm, JEDEC MO-153 compliant (SOT339-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E | Active-low data enable - must be LOW one setup time before CP rising edge to load Dn → Qn |
| 2,5,6,9,12,15,16,19 | Q0–Q7 | Registered outputs - hold stable values between clock edges; no internal feedback |
| 3,4,7,8,13,14,17,18 | D0–D7 | Data inputs - sampled on CP rising edge only when E is LOW |
| 10 | GND | Ground reference - return path for all internal logic and output currents |
| 11 | CP | Positive-edge-triggered clock - LOW-to-HIGH transition initiates sampling and update |
| 20 | VCC | Positive supply - powers all eight flip-flops and output buffers; decoupling required |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to VCC = 1.0 V with guaranteed DC specs from 1.2 V - enables direct interface with 1.2 V/1.8 V I/O domains |
| TTL-input compatibility | Accepts TTL logic levels when VCC ≥ 2.7 V - simplifies integration with legacy 5 V or 3.3 V microcontrollers |
| Edge-triggered synchronization | Single CP edge loads all eight registers simultaneously - ensures deterministic timing for address/data capture |
| Output ground bounce (VOLP) | Typical 0.8 V @ VCC = 3.3 V - quantified noise margin helps PCB layout planning for noise-sensitive analog sections |
| Pin/function compatibility | Direct replacement for 74HC377 and 74HCT377 - allows drop-in upgrade to lower voltage and reduced power |
Applications
| Microcontroller Address Latching | Industrial Bus Interface |
|---|---|
Use Scenario: Latching 8-bit address lines from an 8051 or ARM Cortex-M microcontroller during memory-mapped peripheral access. IC Role / Device Role / Timing Role: Synchronous register capturing address bits on CP rising edge while E is asserted, isolating bus from address changes during read/write cycles. Use Value: Eliminates need for external glue logic; supports 77 MHz bus timing with 13 ns propagation delay and guaranteed setup/hold margins. |
Use Scenario: Capturing sensor data words from a parallel-output ADC or digital encoder in factory automation PLC modules. IC Role / Device Role / Timing Role: Edge-triggered data staging buffer synchronized to system clock, enabling deterministic sampling aligned with control loop execution. Use Value: Ensures glitch-free data transfer across voltage domains (1.8 V MCU ↔ 3.3 V sensor) using LV-family level tolerance and low ground bounce. |
| Memory-Mapped I/O Expansion | Legacy System Bus Bridging |
Use Scenario: Expanding GPIO count on an FPGA-based embedded controller by latching 8-bit command/status registers for peripheral ICs. IC Role / Device Role / Timing Role: Registered interface between FPGA fabric and off-chip peripherals, providing clean, synchronized control signals. Use Value: Reduces FPGA pin count pressure; leverages 1.0–3.6 V operation to match diverse peripheral supply rails without level translators. |
Use Scenario: Interfacing modern low-voltage logic to legacy ISA or VME bus systems requiring 5 V-tolerant timing but powered from 3.3 V supplies. IC Role / Device Role / Timing Role: Voltage-flexible register bridging asynchronous bus handshaking signals into synchronous domain. Use Value: Enables backward compatibility via TTL-input acceptance at VCC = 3.3 V and robust 125°C operation in industrial backplanes. |
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 |
|---|---|---|---|
| 74LV377D,112 | Same die, SO-20 package (7.5 mm body width); higher thermal resistance than SSOP | Preferred where board space allows larger footprint and reflow compatibility with SOIC standards is required | Select for ease of manual soldering or legacy SOIC-compatible layouts |
| SN74LV377APWR | Texas Instruments variant; identical AC/DC specs, same SSOP-20 (PW) package; RoHS-compliant marking | Drop-in alternative with identical pinout and timing; TI's qualification includes extended automotive AEC-Q100 Grade 2 | Choose for automotive-grade traceability or TI-specific supply chain continuity |
Compared with 74LV377DB,112, the 74LV377D,112 offers easier handling but larger PCB area, while SN74LV377APWR provides identical functionality with automotive qualification-neither requires PCB redesign, but only SN74LV377APWR adds AEC-Q100 compliance for harsh-environment deployment.
Availability
74LV377DB,112 is available at Aetrix Electronics and suitable for industrial control systems, embedded instrumentation, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LV377DB,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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic and analog design heritage.
The 74LV377DB,112 belongs to NXP's legacy LV (Low-Voltage) logic family, engineered for interoperability with TTL and CMOS systems while delivering reduced power consumption and extended voltage range compared to HC/HCT series.
FAQ
What is the minimum supply voltage at which 74LV377DB,112 guarantees functional operation?
The 74LV377DB,112 is guaranteed to function down to VCC = 1.0 V, with input levels referenced to GND or VCC. However, DC electrical characteristics-including VIH, VIL, VOH, and VOL-are fully specified only from VCC = 1.2 V to 3.6 V. Below 1.2 V, operation is functional but not characterized for timing or noise margins.
Does 74LV377DB,112 support true TTL input levels across its full voltage range?
No-74LV377DB,112 accepts TTL input levels only when VCC is between 2.7 V and 3.6 V. At those voltages, VIH(min) = 2.0 V and VIL(max) = 0.8 V meet standard TTL thresholds. At VCC < 2.7 V, input thresholds scale proportionally (e.g., VIH = 0.9 V at VCC = 1.2 V), so TTL compatibility is not maintained below 2.7 V.
Can 74LV377DB,112 replace 74HC377 in an existing design without modifications?
Yes-74LV377DB,112 is pin and function compatible with 74HC377 and 74HCT377. It uses the same SSOP-20 footprint and logic behavior. However, verify that VCC is within 1.0–3.6 V (not 2–6 V like HC), and confirm that output drive (±25 mA) and propagation delay (13 ns @ 3.3 V) meet timing margins in your specific circuit.
What is the significance of the 'DB' suffix in 74LV377DB,112?
The 'DB' suffix identifies the SSOP-20 package type (SOT339-1) per NXP's ordering nomenclature. 'D' denotes SO-20, 'DB' denotes SSOP-20, 'PW' denotes TSSOP-20, and 'N' denotes DIP-20. The ',112' indicates tape-and-reel packaging with standard moisture sensitivity level (MSL 1) and industrial temperature grading.
How does the data enable (E) input affect timing behavior in 74LV377DB,112?
The E input must be stable for at least the setup time (tsu = 13 ns min @ VCC = 3.3 V) before the LOW-to-HIGH CP transition. When E is LOW, Dn values are latched to Qn on the CP edge; when E is HIGH, Qn retains its previous state regardless of CP activity. This enables selective register updates without gating the clock.
74LV377DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LV
- Package/Case:
- 20-SSOP (0.209", 5.30mm 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-SSOP
74LV377DB,112 FAQ
1.How can I place an order for 74LV377DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV377DB,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 74LV377DB,112 reliable?
The price and inventory of 74LV377DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV377DB,112 is usually 5 days.
3.What payment methods are accepted for 74LV377DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV377DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV377DB,112?
74LV377DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV377DB,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 74LV377DB,112?
For technical support, including 74LV377DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV377DB,112 requirements.
6.How does Aetrix verify that 74LV377DB,112 is sourced from the original manufacturer or authorized distributors?
All 74LV377DB,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 74LV377DB,112 meets industry standards.
7.What is the process for return or replacement of 74LV377DB,112?
All 74LV377DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV377DB,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 74LV377DB,112 part is unused and in its original packaging.
Return procedure for 74LV377DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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