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NXP Semiconductors 74ABT377ADB,118
- Part No.:
- 74ABT377ADB,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74ABT377ADB,118.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,375
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Product details
Overview
74ABT377ADB,118 from NXP Semiconductors (formerly Philips) is an octal positive-edge-triggered D-type flip-flop with active-low enable, designed for addressable register and data synchronization functions in 5V TTL-compatible digital systems. It features 8-bit parallel data storage, ±32mA/±64mA output drive, 4.5–5.5V supply operation, and guaranteed operation from –40°C to +85°C in a 20-pin SSOP package.
For engineers reviewing the 74ABT377ADB,118 datasheet, 74ABT377ADB,118 pinout, 74ABT377ADB,118 application, or 74ABT377ADB,118 equivalent, key selection criteria include edge-triggered register timing, enable-controlled clock gating, high-current drive capability, and industrial-temperature-grade SSOP packaging for space-constrained logic control designs.
Technical Context
The 74ABT377ADB,118 implements eight independent D-type flip-flops sharing a common rising-edge-sensitive clock (CP) and a single active-low enable (E). Its BiCMOS architecture delivers low propagation delay (3.1 ns typical CP→Qn at 5V/50pF) while maintaining high noise immunity and latch-up protection exceeding 500 mA per JEDEC JC40.2.
Operation requires stable E and D inputs one setup time before the CP rising edge; hold time for both inputs is specified down to –0.6 ns at temperature extremes. Power-up reset ensures Q outputs initialize low, supporting deterministic system startup without external initialization circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74ABT - Advanced BiCMOS TTL-compatible with 5V supply and 3.3V input tolerance |
| Function | Octal D-type flip-flop with common clock and active-low enable (non-inverting outputs) |
| Propagation Delay | 3.1 ns (tPLH), 3.6 ns (tPHL) at VCC = 5V, CL = 50pF - enables >150 MHz clock operation |
| Output Drive | +64 mA sink / –32 mA source - drives heavy capacitive loads or multiple TTL inputs directly |
| Supply Range | 4.5 V to 5.5 V - supports industrial 5V rail tolerances with margin |
| Operating Temp | –40°C to +85°C - qualified for extended-temperature embedded and industrial control |
| Input Capacitance | 4 pF - minimizes loading on preceding logic stages and reduces dynamic power |
Pinout & Package
74ABT377ADB,118 is housed in a 20-pin plastic SSOP Type II package (SOT339-1), 5.3 mm body width, with 0.65 mm lead pitch and gull-wing leads for surface-mount assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E | Active-low enable: gates clock propagation; must be stable ≥1.5 ns before CP rising edge |
| 2,5,6,9,12,15,16,19 | Q0–Q7 | Non-inverted registered outputs; each capable of sourcing –32 mA or sinking +64 mA |
| 3,4,7,8,13,14,17,18 | D0–D7 | Asynchronous data inputs; sampled on CP rising edge when E = L |
| 11 | CP | Positive-edge-triggered clock input; controls simultaneous loading of all 8 flip-flops |
| 10 | GND | Ground reference (0 V); decoupling capacitor placement critical for noise immunity |
| 20 | VCC | Positive supply (4.5–5.5 V); requires local 100 nF ceramic bypass near pin |
Key Features
| Feature | Design Value |
|---|---|
| Power-up reset | Guarantees Q outputs initialize low at VCC ramp-up, eliminating need for external POR circuitry |
| Latch-up protection | Exceeds 500 mA per JEDEC JC40.2 - prevents destructive latch-up under transient overvoltage |
| ESD robustness | 2000 V HBM, 200 V MM - withstands handling and board-level ESD events without damage |
| High-speed BiCMOS | Combines CMOS input impedance with bipolar output drive for optimal speed-power tradeoff |
| Industrial temp grade | Validated operation across –40°C to +85°C - suitable for uncontrolled ambient environments |
Applications
| Microprocessor Address Latching | Bus Interface Synchronization |
|---|---|
Use Scenario: Capturing and holding 8-bit address bus segments during memory or I/O access cycles in 80x86 or Z80-based systems. IC Role / Device Role / Timing Role: Edge-triggered address register that isolates address lines from bus contention during read/write strobes. Use Value: Eliminates address glitches by sampling on clean clock edges and holding stable until next cycle, improving memory access reliability. | Use Scenario: Aligning asynchronous peripheral data transfers (e.g., UART, parallel printer) to a synchronous system clock domain. IC Role / Device Role / Timing Role: Synchronizing incoming data bits using E input to gate CP, ensuring metastability-free registration. Use Value: Prevents timing violations between disparate clock domains via controlled enable gating and setup/hold compliance. |
| Industrial PLC I/O Expansion | Digital Control Register Bank |
Use Scenario: Expanding discrete input/output capacity in programmable logic controllers where field signals require synchronized sampling. IC Role / Device Role / Timing Role: Registering sensor status or actuator command bits under PLC scan-cycle timing control. Use Value: Provides deterministic, jitter-free latching of real-world signals with industrial-grade temperature and ESD resilience. | Use Scenario: Storing configuration bits for FPGA or microcontroller peripherals (e.g., ADC channel select, DAC gain setting). IC Role / Device Role / Timing Role: Static control register holding non-volatile settings updated only during system initialization or reconfiguration. Use Value: Delivers high-drive, low-leakage storage with power-up reset - ensures known state on boot without firmware overhead. |
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 |
|---|---|---|---|
| SN74ABT377ADW | Same logic function and AC/DC specs; packaged in 20-pin SO (SOT163-1), 7.5 mm body width | SO package offers easier manual soldering and higher thermal mass; less dense than SSOP | Select for prototyping, lower-volume production, or legacy SO footprint compatibility |
| 74LVX377M | Lower voltage (2.7–3.6 V), CMOS-only; max fCLK = 80 MHz; ±24 mA drive; no power-up reset | Designed for 3.3 V systems; lacks industrial temp rating and latch-up immunity of ABT family | Select only for 3.3 V battery-powered or low-power portable designs where ABT performance is unnecessary |
Compared with SN74ABT377ADW and 74LVX377M, the 74ABT377ADB,118 uniquely combines SSOP density, 5V industrial robustness, power-up reset, and >150 MHz operation - making it optimal for space-constrained, high-reliability 5V control logic where deterministic startup and noise immunity are critical.
Availability
74ABT377ADB,118 is available at Aetrix Electronics and suitable for microprocessor address latching, bus interface synchronization, and industrial PLC I/O expansion requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74ABT377ADB,118 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 delivering high-performance analog, logic, RF, and automotive ICs, with roots in Philips' pioneering logic and mixed-signal design heritage.
The 74ABT series was engineered for high-speed, high-drive 5V TTL-compatible logic in industrial and computing infrastructure - emphasizing noise immunity, latch-up safety, and reliable operation across harsh thermal environments.
FAQ
What is the maximum clock frequency supported by the 74ABT377ADB,118?
The 74ABT377ADB,118 supports a maximum clock frequency of 150 MHz over its full operating temperature range (–40°C to +85°C) and up to 250 MHz at +25°C. This is enabled by its low propagation delay (3.1 ns typical tPLH) and fast edge rates, making it suitable for high-speed register applications in 5V digital systems where timing margins are tight.
Does the 74ABT377ADB,118 have a power-up reset function?
Yes, the 74ABT377ADB,118 includes a built-in power-up reset feature that guarantees all Q outputs initialize to logic low upon VCC ramp-up. This eliminates the need for external reset circuitry in systems where deterministic initial state is required, simplifying design and improving reliability during cold-start conditions.
What are the absolute maximum ratings for supply voltage and output current on the 74ABT377ADB,118?
The 74ABT377ADB,118 has an absolute maximum DC supply voltage (VCC) of –0.5 V to +7.0 V and a maximum DC output current (IOUT) of 128 mA in the low state. Exceeding these limits risks permanent device damage; recommended operating VCC is strictly 4.5–5.5 V, and output load should not exceed ±64 mA/±32 mA per pin under normal use.
Is the 74ABT377ADB,118 pin-compatible with other packages in the same family?
Yes - the 74ABT377ADB,118 shares identical pinout and electrical functionality with other 74ABT377A variants including the DIP (74ABT377AN), SO (74ABT377AD), and TSSOP (74ABT377APW) packages. All use the same 20-pin assignment per the Philips SOT339-1, SOT163-1, SOT146-1, and SOT360-1 drawings, enabling direct PCB footprint substitution where mechanical constraints allow.
What logic levels does the 74ABT377ADB,118 accept on its D and E inputs?
The 74ABT377ADB,118 accepts TTL-compatible input levels: VIH ≥ 2.0 V and VIL ≤ 0.8 V over the full temperature range. Its BiCMOS inputs tolerate voltages up to 7.0 V (absolute max), and exhibit only 4 pF capacitance - enabling reliable interfacing with legacy 5V TTL, CMOS, and mixed-voltage systems without level-shifting.
74ABT377ADB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 250 MHz
- Max Propagation Delay @ V, Max CL:
- 3.6ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 250 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
74ABT377ADB,118 FAQ
1.How can I place an order for 74ABT377ADB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT377ADB,118 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 74ABT377ADB,118 reliable?
The price and inventory of 74ABT377ADB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT377ADB,118 is usually 5 days.
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4.How is shipping managed for 74ABT377ADB,118?
74ABT377ADB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT377ADB,118 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 74ABT377ADB,118?
For technical support, including 74ABT377ADB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT377ADB,118 requirements.
6.How does Aetrix verify that 74ABT377ADB,118 is sourced from the original manufacturer or authorized distributors?
All 74ABT377ADB,118 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 74ABT377ADB,118 meets industry standards.
7.What is the process for return or replacement of 74ABT377ADB,118?
All 74ABT377ADB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT377ADB,118, 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 74ABT377ADB,118 part is unused and in its original packaging.
Return procedure for 74ABT377ADB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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