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NXP Semiconductors 74ABT377AN,112
- Part No.:
- 74ABT377AN,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
74ABT377AN,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
74ABT377AN,112 from Philips Semiconductors is an octal D-type positive-edge-triggered flip-flop with active-low enable, designed for addressable register and data synchronization functions in 5V TTL-compatible systems. It features 8-bit parallel data storage, 3.1 ns typical propagation delay (CP to Qn), ±64 mA/–32 mA output drive capability, and operates across –40°C to +85°C.
For engineers reviewing the 74ABT377AN,112 datasheet, 74ABT377AN,112 pinout, 74ABT377AN,112 application, or 74ABT377AN,112 equivalent, key selection criteria include edge-triggered register timing, enable-controlled clock gating, high-current drive for bus interfacing, and compatibility with legacy ABT logic families in industrial control and memory interface designs.
Technical Context
The 74ABT377AN,112 implements a fully synchronous 8-bit register architecture where all eight D-type flip-flops share a common buffered clock (CP) and a single active-low enable (E). Data at D0–D7 is latched on the rising edge of CP only when E is low; otherwise outputs hold their state.
Its BiCMOS process delivers low static current (ICCH = 500 nA typ.) and high-speed performance (fMAX = 150 MHz min. over temperature), with robust latch-up immunity (>500 mA) and ESD protection (2000 V HBM, 200 V MM), making it suitable for noise-prone industrial environments requiring reliable 5V digital sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74ABT - Advanced BiCMOS TTL-compatible, 5V supply only |
| Function | Octal D-type positive-edge-triggered register with active-low enable |
| Propagation Delay | tPLH/tPHL = 3.1/3.6 ns (CP to Qn, CL = 50 pF, VCC = 5 V) - enables sub-4 ns timing-critical register staging |
| Output Drive | +64 mA sink / –32 mA source - supports direct driving of multiple TTL loads or termination-resistive buses |
| Supply Range | VCC = 4.5 V to 5.5 V - ensures stable operation under noisy 5V rail conditions |
| Operating Temp | –40°C to +85°C - qualified for extended industrial temperature deployment |
| Input Capacitance | CIN = 4 pF - minimizes loading on preceding drivers in high-speed fanout chains |
Pinout & Package
74ABT377AN,112 is supplied in a 20-pin plastic dual in-line package (DIP), SOT146-1, with 300-mil body width and through-hole mounting. Pin 1 is located at the left end of the top row (notch-down orientation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E | Active-low enable: gates clock propagation; must be stable ≥2.0 ns before CP rising edge |
| 2,5,6,9,12,15,16,19 | Q0–Q7 | Registered data outputs; retain state when E is high or CP inactive |
| 3,4,7,8,13,14,17,18 | D0–D7 | Asynchronous data inputs; sampled one setup time before CP rising edge |
| 10 | GND | Signal ground reference for all I/O and internal logic |
| 11 | CP | Positive-edge-triggered clock input; controls simultaneous latching of all 8 bits |
| 20 | VCC | +5 V power supply; decoupling required within 1 cm for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Power-up reset behavior | Outputs default low at power-on (VRST ≤ 0.55 V), preventing bus contention during system boot |
| Latch-up immunity | Exceeds 500 mA per JEDEC JESD78 (JC40.2), enabling safe operation in mixed-signal PCBs |
| ESD robustness | 2000 V HBM and 200 V machine model - reduces field failure risk in manual handling and assembly |
| High-speed bus interface | 150 MHz max clock frequency with 0.7 ns minimum pulse width supports fast address/data strobing |
| Low input leakage | ±1.0 µA max (–40°C to +85°C) - preserves signal integrity in high-impedance control paths |
Applications
| Industrial PLC I/O Expansion | Legacy Memory Address Latching |
|---|---|
|
Use Scenario: Storing and synchronizing 8-bit parallel I/O status from sensor arrays or relay banks in programmable logic controllers. IC Role / Device Role / Timing Role: Edge-triggered register capturing real-time digital inputs on rising clock edge, gated by enable to align with scan cycle boundaries. Use Value: Ensures deterministic sampling window via ts(H)/th(H) timing margins (1.5 ns/1.0 ns), eliminating metastability in noisy factory-floor environments. |
Use Scenario: Latching 8-bit segments of CPU address bus to drive static RAM or EPROM chips in retro-computing or embedded controller designs. IC Role / Device Role / Timing Role: Address register holding lower byte of memory address during full bus cycle, enabled only during valid address phase. Use Value: High-output drive (+64 mA) directly drives multiple memory chip address inputs without external buffers, reducing BOM count. |
| Parallel Data Acquisition Buffer | Bus Isolation & Synchronization |
|
Use Scenario: Capturing parallel ADC output words (e.g., 8-bit SAR converters) into a synchronized pipeline stage before serial conversion or DMA transfer. IC Role / Device Role / Timing Role: Data capture register aligned to system clock domain, isolating ADC's asynchronous sampling edge from downstream logic. Use Value: 3.1 ns tPLH enables tight timing closure in 100+ MHz sampling systems, while power-up reset prevents undefined startup states. |
Use Scenario: Interfacing mismatched logic domains (e.g., microcontroller GPIO to peripheral control bus) requiring level- and timing-isolated handshaking. IC Role / Device Role / Timing Role: Synchronizer registering control signals (e.g., chip select, write enable) to eliminate glitches caused by skew between clock and enable paths. Use Value: Common enable (E) allows coordinated gating of multiple registers, ensuring atomic updates across multi-bit control words. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT377N | Same ABT family, identical pinout and AC/DC specs; manufactured by Texas Instruments under second-source agreement | No functional deviation; validated for drop-in replacement in existing Philips-designed boards | Select when TI-sourced logistics or dual-sourcing strategy is required |
| 74F377N | F-family TTL: higher ICC (30 mA typ.), slower tPLH (5.5 ns min), no power-up reset, lower ESD rating (1000 V HBM) | Suitable only for non-critical, lower-speed legacy systems where robustness and low-power startup are not required | Choose only if cost is primary constraint and timing margin >2 ns is available |
Compared with 74ABT377AN,112, SN74ABT377N offers identical performance and drop-in compatibility, while 74F377N trades speed, power efficiency, and reliability for lower unit cost in less demanding applications.
Availability
74ABT377AN,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy memory address latching, and parallel data acquisition buffering requiring stable component supply and long-term lifecycle support.
Supply support for 74ABT377AN,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
Philips Semiconductors (now NXP Semiconductors) is a Dutch semiconductor pioneer known for high-reliability logic, analog, and RF solutions serving industrial, automotive, and communications markets.
The 74ABT377AN,112 belongs to the ABT advanced BiCMOS logic family, engineered for high-speed, low-noise 5V digital interfacing in mission-critical industrial control and data acquisition systems.
FAQ
What is the recommended operating voltage range for the 74ABT377AN,112?
The 74ABT377AN,112 is specified for operation at VCC = 4.5 V to 5.5 V. Operation outside this range may cause timing violations or output drive degradation. The device is not 3.3 V tolerant - applying 3.3 V to VCC will result in non-functional behavior and potential damage due to insufficient internal biasing.
Does the 74ABT377AN,112 have built-in power-up reset functionality?
Yes, the 74ABT377AN,112 features power-up reset: outputs default to low (VRST ≤ 0.55 V) upon VCC ramp-up, preventing undefined states or bus contention during system initialization. This behavior is guaranteed across the full temperature range and requires no external circuitry.
Can the 74ABT377AN,112 be used in place of the older 74ABT377 without design changes?
Yes - the 74ABT377AN,112 replaces the original 74ABT377 (1995) with identical pinout, timing, and electrical specifications. The "N,112" suffix denotes the standard 20-pin DIP package with Philips' updated manufacturing and qualification standards, requiring no PCB or firmware modifications.
What is the maximum clock frequency supported by the 74ABT377AN,112 over temperature?
The 74ABT377AN,112 guarantees fMAX = 150 MHz minimum across –40°C to +85°C at VCC = 5.0 V ±0.5 V. At 25°C and VCC = 5.0 V, typical operation reaches 250 MHz, but system-level timing margins must account for worst-case propagation delays and setup/hold requirements.
How does the enable (E) input affect timing behavior in the 74ABT377AN,112?
The E input must be stable ≥2.0 ns before the CP rising edge (ts(H)/ts(L)) to ensure predictable latching. When E is high, Q outputs hold their last state regardless of CP transitions; when E is low, D inputs are transferred to Q on every CP rising edge - enabling precise clock gating for burst-mode data capture.
74ABT377AN,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- 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:
- 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:
- Through Hole
- Supplier Device Package:
- 20-DIP
74ABT377AN,112 FAQ
1.How can I place an order for 74ABT377AN,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT377AN,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 74ABT377AN,112 reliable?
The price and inventory of 74ABT377AN,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT377AN,112 is usually 5 days.
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Once your 74ABT377AN,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 74ABT377AN,112?
For technical support, including 74ABT377AN,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT377AN,112 requirements.
6.How does Aetrix verify that 74ABT377AN,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT377AN,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 74ABT377AN,112 meets industry standards.
7.What is the process for return or replacement of 74ABT377AN,112?
All 74ABT377AN,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT377AN,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 74ABT377AN,112 part is unused and in its original packaging.
Return procedure for 74ABT377AN,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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