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NXP Semiconductors 74ABT273AN,112
- Part No.:
- 74ABT273AN,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
74ABT273AN,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
74ABT273AN,112 from Philips Semiconductors is an octal D-type flip-flop with edge-triggered operation, buffered common clock (CP) and active-Low master reset (MR), 8-bit parallel data storage for synchronous digital systems, propagation delay of 3.0 ns (tPLH) at 5 V, and rated for industrial temperature range (–40°C to +85°C). It serves as a synchronous register in bus interface and control logic circuits.
For engineers reviewing the 74ABT273AN,112 datasheet, 74ABT273AN,112 pinout, 74ABT273AN,112 application, or 74ABT273AN,112 equivalent, key selection criteria include setup/hold timing (ts = 0.6 ns, th = –0.5 ns), output drive capability (IOL = 64 mA), power-up reset behavior, and compatibility with 5 V TTL/ABT logic families.
Technical Context
The 74ABT273AN,112 implements eight independent D-type flip-flops sharing a single rising-edge-triggered clock (CP) and a common asynchronous master reset (MR). All outputs are non-inverting and actively driven - no 3-state functionality is present.
It operates strictly within 4.5 V to 5.5 V supply range, features input clamp voltage of –0.9 V (VIK), and guarantees power-up output low state (VRST ≤ 0.55 V). Its AC performance is characterized with CL = 50 pF and tR/tF = 2.5 ns, supporting up to 250 MHz maximum clock frequency over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74ABT - advanced BiCMOS TTL-compatible, optimized for speed and drive strength at 5 V |
| Function | Octal positive-edge-triggered D flip-flop with asynchronous active-Low reset |
| Propagation Delay (CP→Q) | 3.0 ns typical (tPLH), 4.6 ns max at VCC = 5 V, CL = 50 pF - defines minimum clock-to-output latency |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures robust operation across industrial 5 V rail tolerances |
| Output Drive (IOL / IOH) | 64 mA sink / –32 mA source - supports direct fan-out to multiple TTL loads without buffers |
| Setup/Hold Time | ts(H/L) = 0.6 ns min, th(H/L) = –0.5 ns min - enables high-speed data capture with relaxed board routing constraints |
| Power-Up Reset | Guaranteed low output on power ramp (VRST ≤ 0.55 V) - prevents undefined states during system boot |
Pinout & Package
74ABT273AN,112 is supplied in a 20-pin plastic dual in-line package (DIP), body width 300 mil, compliant with SOT146-1 mechanical standard. Pin spacing is 0.1 inch (2.54 mm), with through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | MR | Asynchronous master reset input (active-Low); forces all Qn outputs Low regardless of CP or Dn state |
| 2,5,6,9,12,15,16,19 | Q0–Q7 | Non-inverting registered outputs; each reflects corresponding Dn value sampled on CP rising edge |
| 3,4,7,8,13,14,17,18 | D0–D7 | Independent data inputs; sampled one setup time before CP rising edge |
| 10 | GND | Ground reference (0 V) for all internal circuitry and I/O |
| 11 | CP | Common clock input (rising-edge sensitive); synchronizes loading of all eight flip-flops |
| 20 | VCC | Positive supply terminal (4.5–5.5 V); powers internal logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Edge-triggered register architecture | Ensures deterministic sampling at CP rising edge, eliminating metastability risk from asynchronous data changes |
| Buffered CP and MR inputs | Reduces capacitive loading on driving nets and improves noise immunity for shared clock/reset distribution |
| Power-up reset guarantee | Prevents spurious output transitions during power ramp, critical for reliable system initialization |
| ESD protection | ≥2000 V HBM (per MIL-STD-833 Method 3015) - enhances handling robustness in manufacturing environments |
| Industrial temperature rating | –40°C to +85°C operation - validated for use in embedded controllers, industrial PLCs, and telecom line cards |
Applications
| Bus Interface Register | Control Logic Storage |
|---|---|
|
Use Scenario: Holding address or command data between microcontroller and peripheral ICs with timing-critical handshaking. IC Role / Device Role / Timing Role: Synchronous data latch that isolates bus segments and aligns data to system clock domain. Use Value: Enables clean separation of read/write cycles using a single rising-edge clock, reducing bus contention and timing violations. |
Use Scenario: Storing configuration bits for FPGA I/O banks or programmable logic devices during power-on initialization. IC Role / Device Role / Timing Role: Non-volatile register holding static control settings synchronized to system reset and clock. Use Value: Guarantees known initial state (all Qn = Low) via MR and eliminates need for external pull-down networks. |
| State Machine Sequencer | LED/Display Driver Register |
|
Use Scenario: Implementing finite-state machine outputs in industrial automation sequencers where next-state logic depends on current register contents. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing combinatorial next-state logic on each clock cycle. Use Value: Provides predictable, glitch-free state transitions with setup/hold margins verified down to –0.5 ns hold time. |
Use Scenario: Driving 7-segment displays or LED arrays in instrumentation panels requiring stable segment illumination between updates. IC Role / Device Role / Timing Role: Parallel output register buffering microcontroller GPIO outputs to reduce software update overhead. Use Value: Delivers 64 mA per output - sufficient to drive LEDs directly without external transistors in low-current designs. |
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 |
|---|---|---|---|
| 74ABT374AN,112 | Includes 3-state outputs controlled by OE; otherwise identical timing, pinout, and function | Required when bus-sharing or bidirectional data paths demand output enable/disable capability | Select 74ABT374AN,112 only if tri-state control is needed; 74ABT273AN,112 is preferred for fixed-direction output applications |
| SN74ACT273N | Same 20-pin DIP pinout and function, but ACT family: higher noise margin (VIL = 1.5 V), lower drive (IOL = 24 mA), slower max fCLK (100 MHz) | Suitable for mixed-signal boards where noise immunity outweighs speed or drive requirements | Choose SN74ACT273N for legacy 5 V systems prioritizing noise rejection over performance; verify timing margins at target clock rate |
Compared with 74ABT273AN,112, the 74ABT374AN,112 adds output enable control at no cost to speed or pin compatibility, while SN74ACT273N trades ABT-level drive and frequency for enhanced noise immunity - both require validation of load capacitance and trace length effects in high-speed layouts.
Availability
74ABT273AN,112 is available at Aetrix Electronics and suitable for industrial control systems, bus interface modules, and LED display driver circuits requiring stable component supply and long-term obsolescence management.
Supply support for 74ABT273AN,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 pioneer in logic IC design, delivering high-reliability, industry-standard digital components since the 1970s.
The 74ABT273AN,112 belongs to the ABT (Advanced BiCMOS Technology) logic family, engineered for high-speed 5 V TTL-compatible applications demanding low propagation delay and strong output drive in industrial and telecom infrastructure.
FAQ
What is the operating voltage range for the 74ABT273AN,112?
The 74ABT273AN,112 operates over a supply voltage range of 4.5 V to 5.5 V. This range ensures compatibility with standard 5 V TTL and ABT logic families while accommodating typical power rail tolerances in industrial systems. Operation outside this range may cause functional failure or reliability degradation, as confirmed by the Recommended Operating Conditions table in the Philips product specification.
Does the 74ABT273AN,112 have 3-state outputs?
No, the 74ABT273AN,112 does not feature 3-state outputs. It provides standard push-pull outputs capable of sourcing –32 mA and sinking 64 mA. For 3-state functionality, the pin-compatible 74ABT374AN,112 is the designated alternative in the same ABT family, as explicitly noted in the Philips datasheet's "See" references under FEATURES.
What is the guaranteed behavior of the 74ABT273AN,112 during power-up?
The 74ABT273AN,112 guarantees a power-up output low state (VRST ≤ 0.55 V) when VCC ramps from 0 V to 5.5 V, provided no data is loaded after power application. This behavior is specified in the DC Electrical Characteristics table and ensures deterministic initialization without external reset circuitry in many embedded applications.
Is the 74ABT273AN,112 pin-compatible with other 74-series octal flip-flops?
Yes, the 74ABT273AN,112 shares the standard 20-pin DIP pinout defined in SOT146-1, matching legacy 74LS273 and 74HC273 packages. However, electrical characteristics differ significantly - ABT offers faster speed and stronger drive than LS or HC. Pin compatibility does not imply functional or timing interchangeability without design validation.
What is the maximum clock frequency supported by the 74ABT273AN,112 across its full temperature range?
The 74ABT273AN,112 supports a maximum clock frequency of 250 MHz over the full industrial temperature range (–40°C to +85°C) at VCC = 5.0 V ± 0.5 V, as specified in the AC Characteristics table. At 25°C, typical performance reaches 350 MHz, but system-level timing must be verified under worst-case voltage and temperature conditions.
74ABT273AN,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:
- Master Reset
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 350 MHz
- Max Propagation Delay @ V, Max CL:
- 4.6ns @ 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:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-DIP
74ABT273AN,112 FAQ
1.How can I place an order for 74ABT273AN,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT273AN,112 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of 74ABT273AN,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT273AN,112 is usually 5 days.
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5.How can I obtain technical support or documentation for 74ABT273AN,112?
For technical support, including 74ABT273AN,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT273AN,112 requirements.
6.How does Aetrix verify that 74ABT273AN,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT273AN,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 74ABT273AN,112 meets industry standards.
7.What is the process for return or replacement of 74ABT273AN,112?
All 74ABT273AN,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT273AN,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 74ABT273AN,112 part is unused and in its original packaging.
Return procedure for 74ABT273AN,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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