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NXP Semiconductors 74LV377D,112
- Part No.:
- 74LV377D,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LV377D,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,701
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Product details
Overview
74LV377D,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 at 1.0–3.6 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 74LV377D,112 datasheet, 74LV377D,112 pinout, 74LV377D,112 application, or 74LV377D,112 equivalent, this device serves as a low-voltage, pin-compatible alternative to 74HC/HCT377 in synchronous data latching, bus interface buffering, and address/data synchronization where TTL-level compatibility at 2.7–3.6 V and controlled ground bounce (<0.8 V) are critical.
Technical Context
The 74LV377D,112 implements eight edge-triggered D flip-flops sharing a common clock (CP) and a single active-low data enable (E). All Q outputs update synchronously on the LOW-to-HIGH transition of CP when E is LOW; otherwise outputs retain state. Input setup/hold times are specified down to 13 ns (tsu) and 5 ns (th) at VCC = 3.3 V.
It operates across –40°C to +125°C with guaranteed DC characteristics from 1.2 V to 3.6 V, supports TTL input thresholds at VCC ≥ 2.7 V, and exhibits typical output ground bounce (VOLP) of 0.8 V and VOH undershoot (VOHV) of 2.0 V at VCC = 3.3 V and Tamb = 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.0 V to 3.6 V - supports battery-powered and mixed-voltage systems with full functionality down to 1.0 V |
| tPHL/tPLH | 13 ns @ VCC = 3.3 V, CL = 15 pF - enables high-speed data capture in 77 MHz clock domains |
| fmax | 77 MHz @ VCC = 3.3 V - suitable for fast parallel bus latching in microcontroller peripherals |
| VIH/VIL | 2.0 V / 0.8 V @ VCC = 3.3 V - accepts standard TTL logic levels without level-shifting |
| IO Sink/Source | ±25 mA per output - drives standard CMOS loads and small capacitive buses directly |
| CI | 3.5 pF - minimizes switching noise and input loading in high-density PCB layouts |
| ICC Quiescent | 20 µA @ VCC = 3.6 V - enables ultra-low static power in always-on register stages |
Pinout & Package
74LV377D,112 is supplied in a 20-pin plastic SO package (SOT163-1), 7.5 mm body width, surface-mount compatible with JEDEC MS-013 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E | Active-low data enable - gates clocked data transfer; must be stable one setup time before CP rising edge |
| 2,5,6,9,12,15,16,19 | Q0–Q7 | Flip-flop outputs - latch and hold Dn states synchronously on CP rising edge when E = LOW |
| 3,4,7,8,13,14,17,18 | D0–D7 | Data inputs - sampled one setup time before CP rising edge; ignored when E = HIGH |
| 10 | GND | Ground reference - return path for all internal logic and output currents |
| 11 | CP | Positive-edge-triggered clock - initiates simultaneous load of all eight flip-flops when E = LOW |
| 20 | VCC | Positive supply - powers all logic and output stages; decoupling required within 10 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional from 1.0 V - enables direct integration into 1.2 V or 1.8 V core logic domains without level shifters |
| TTL input compatibility | Valid VIH/VIL thresholds at VCC = 2.7–3.6 V - simplifies interoperation with legacy 5 V TTL peripherals via pull-up or direct connection |
| Controlled output transients | VOLP = 0.8 V, VOHV = 2.0 V @ 3.3 V - reduces signal integrity risk in multi-load parallel buses |
| Pin/function compatibility | Drop-in replacement for 74HC377 and 74HCT377 - allows voltage scaling without PCB redesign |
| High-temperature operation | Rated to +125°C ambient - supports automotive under-hood and industrial control applications |
Applications
| Microcontroller Address Latching | Parallel Bus Interface Buffering |
|---|---|
Use Scenario: Latching 8-bit address lines from an MCU during memory-mapped I/O cycles to stabilize external peripheral addressing. IC Role / Device Role / Timing Role: Synchronous address register - captures and holds D0–D7 on CP rising edge when E is asserted, isolating address bus from timing skew. Use Value: Eliminates address glitches during bus arbitration; enables reliable access to external SRAM or I/O expanders at up to 77 MHz clock rates. | Use Scenario: Isolating and synchronizing bidirectional data between a microprocessor data bus and slower peripheral devices. IC Role / Device Role / Timing Role: Edge-triggered data latch - freezes D0–D7 values at precise clock edges, preventing metastability in asynchronous handshaking protocols. Use Value: Ensures deterministic data capture with 13 ns propagation delay and 5 ns hold time, reducing timing margin requirements in mixed-speed systems. |
| Industrial PLC I/O Expansion | Test Equipment Digital Pattern Storage |
Use Scenario: Capturing and holding digital sensor status bits (e.g., limit switches, safety interlocks) in programmable logic controller modules. IC Role / Device Role / Timing Role: Industrial-grade register - provides robust latching over –40°C to +125°C with ±25 mA output drive for LED indicators or optocoupler inputs. Use Value: Guarantees reliable operation in harsh environments with no derating needed up to 125°C, supported by 1.2–3.6 V DC specs. | Use Scenario: Storing test vectors for automated functional testing of digital circuits using pattern generators and comparators. IC Role / Device Role / Timing Role: High-speed vector register - loads 8-bit stimulus patterns on each CP edge while E enables selective update windows. Use Value: Enables precise, repeatable pattern sequencing at 77 MHz with minimal ground bounce, improving test repeatability and signal fidelity. |
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 | Lower ICC (10 µA typ), higher VOLP (1.0 V), same pinout and AC specs | Better suited for ultra-low-power portable instrumentation where static current dominates budget | Select 74LVX377M only if quiescent current <15 µA is mandatory; 74LV377D,112 offers superior noise immunity (lower VOLP) |
| SN74LVC377APWR | Wider VCC range (1.65–3.6 V), higher fmax (100 MHz), different pinout (TSSOP-20) | Requires PCB layout change; preferred for new designs targeting >85 MHz clock domains | Choose SN74LVC377APWR for new high-speed designs; 74LV377D,112 remains optimal for drop-in 74HC377 upgrades in existing SO-20 layouts |
Compared with 74LVX377M and SN74LVC377APWR, the 74LV377D,112 uniquely balances low-voltage operation (down to 1.0 V), proven 77 MHz performance in SO-20, and industry-standard pin compatibility - making it the preferred choice for legacy system voltage scaling and industrial register consolidation without layout revision.
Availability
74LV377D,112 is available at Aetrix Electronics and suitable for microcontroller address latching, industrial PLC I/O expansion, and test equipment digital pattern storage requiring stable component supply across extended temperature ranges.
Supply support for 74LV377D,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 IC development.
The 74LV377D,112 belongs to NXP's LV (Low-Voltage) logic family, engineered specifically for voltage-scalable digital interfacing in mixed-supply systems where interoperability with both CMOS and TTL signaling is essential.
FAQ
What is the minimum supply voltage at which 74LV377D,112 guarantees functional operation?
The 74LV377D,112 is guaranteed to function down to VCC = 1.0 V, with input levels referenced to GND or VCC. However, DC electrical characteristics (e.g., VOH, VOL, VIH, VIL) are fully specified only from VCC = 1.2 V to 3.6 V. At 1.0 V, logic transitions occur but parametric limits may vary; design margins should be verified per application.
Is 74LV377D,112 pin-compatible with standard 74HC377 devices?
Yes, the 74LV377D,112 is pin and function compatible with 74HC377 and 74HCT377. Its 20-pin SO package (SOT163-1), pin numbering, and logic behavior-including identical E, CP, Dn, and Qn assignments-allow direct substitution in existing PCB layouts when migrating to lower supply voltages (1.0–3.6 V).
What is the maximum clock frequency supported by 74LV377D,112 at 2.7 V supply?
At VCC = 2.7 V, the 74LV377D,112 supports a maximum clock frequency of 58 MHz, as specified in the AC Characteristics table for the –40°C to +125°C temperature range. This value accounts for worst-case process, voltage, and temperature (PVT) corners and ensures reliable setup/hold timing across full operating conditions.
Does 74LV377D,112 require external pull-up resistors on its inputs when interfacing with TTL outputs?
No, the 74LV377D,112 accepts TTL input levels when VCC is between 2.7 V and 3.6 V - its VIH threshold is 2.0 V and VIL is 0.8 V, matching standard TTL logic families. Direct connection to 5 V TTL outputs is not recommended due to absolute max rating violation; use level-shifting or 3.3 V–tolerant TTL variants instead.
How does the data enable (E) input affect timing behavior in 74LV377D,112?
The E input must be stable for at least the specified setup time (e.g., 13 ns at VCC = 3.3 V) before the LOW-to-HIGH CP transition. When E = LOW, Dn values are latched to Qn on the CP rising edge; when E = HIGH, Qn outputs retain their previous state regardless of Dn or CP activity - enabling gated data capture windows without additional control logic.
74LV377D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LV
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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-SO
74LV377D,112 FAQ
1.How can I place an order for 74LV377D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV377D,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 74LV377D,112 reliable?
The price and inventory of 74LV377D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV377D,112 is usually 5 days.
3.What payment methods are accepted for 74LV377D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV377D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV377D,112?
74LV377D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV377D,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 74LV377D,112?
For technical support, including 74LV377D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV377D,112 requirements.
6.How does Aetrix verify that 74LV377D,112 is sourced from the original manufacturer or authorized distributors?
All 74LV377D,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 74LV377D,112 meets industry standards.
7.What is the process for return or replacement of 74LV377D,112?
All 74LV377D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV377D,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 74LV377D,112 part is unused and in its original packaging.
Return procedure for 74LV377D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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