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Texas Instruments SN74ABT5403DWR
- Part No.:
- SN74ABT5403DWR
- Manufacturer:
- Texas Instruments
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT5403DWR.pdf
- Description:
- IC BUFFER INVERT 5.5V 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:885
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Product details
Overview
SN74ABT5403DWR from Texas Instruments is a 12-bit inverting buffer/line driver with 3-state outputs, designed for memory address and bus-oriented applications. It operates from 4.5 V to 5.5 V, supports –40°C to 85°C temperature range, features integrated 25-Ω output series resistors, and delivers ±12 mA drive capability per output. Used in high-density address buffering and clock distribution systems.
For engineers reviewing the SN74ABT5403DWR datasheet, SN74ABT5403DWR pinout, SN74ABT5403DWR application, or SN74ABT5403DWR equivalent, key selection criteria include 3-state enable logic (dual active-low OE), output undershoot/overshoot suppression, BiCMOS power efficiency, latch-up immunity (>500 mA), and SOIC-28 package compatibility with legacy 74-series footprint constraints.
Technical Context
This device implements dual active-low 3-state enable inputs (OE1, OE2) connected via AND logic - either high disables all 12 outputs into high-impedance state. Outputs are inverted relative to inputs (D → Y), and each incorporates on-die 25-Ω series termination to suppress ringing without external components.
Designed using EPIC-IIB BiCMOS process, it achieves low ground bounce (VOLP < 1 V) and undershoot (VOLV < 0.5 V) at 5 V/25°C. Electrical characteristics are specified across full industrial temperature range, with absolute maximum ratings including 7 V supply tolerance and –50 mA output clamp current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL and ABT logic families without level shifting. |
| Output Drive | ±12 mA per channel - sufficient to drive terminated transmission lines or multiple CMOS/TTL loads. |
| Propagation Delay | tPLH/tPHL ≤ 6.9 ns at 5 V - enables high-speed address/data path timing in memory subsystems. |
| 3-State Enable Logic | AND-gated dual OE (active-low) - ensures fail-safe high-Z during power-up if OE tied to VCC via pullup. |
| Output Termination | Integrated 25-Ω series resistor - eliminates need for external source-series termination on PCB. |
| Latch-Up Immunity | >500 mA per JEDEC JESD-17 - robust against transient-induced latch-up in noisy industrial environments. |
| Input Clamp Current | –18 mA - protects inputs from negative transients up to –1.2 V (VIK). |
Pinout & Package
SN74ABT5403DWR is housed in a 28-pin SOIC (DW) package, 300 mil body width, with standard pin pitch of 1.27 mm and RoHS-compliant NiPdAu lead finish. Moisture sensitivity level is Level-1 (unlimited floor life at ≤30°C/60% RH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–6, 8–13 | Inverted Output (Y1–Y6, Y7–Y12) | 12 buffered, inverted, 3-state outputs; each includes 25-Ω series resistor for EMI control. |
| 14, 15 | Output Enable (OE1, OE2) | Active-low dual enable inputs - AND logic requires both low for output activation; either high forces all outputs to high-Z. |
| 16–27 | Data Input (D1–D12) | 12 non-inverting inputs feeding internal inverters; inputs tolerate –0.5 V to 7 V and draw ≤±1 µA. |
| 7 | GND | Ground reference for all I/O and internal circuitry; separate from power return paths in high-noise layouts. |
| 28 | VCC | Positive supply rail (4.5–5.5 V); decoupling capacitor required within 1 cm for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| On-die 25-Ω series termination | Eliminates external resistors for source termination, reducing BOM count and layout area in high-speed bus designs. |
| EPIC-IIB BiCMOS process | Reduces static and dynamic power vs. bipolar-only equivalents while maintaining TTL-compatible voltage thresholds. |
| Low ground bounce (VOLP < 1 V) | Minimizes noise coupling into adjacent signal or power domains during simultaneous output switching. |
| JEDEC JESD-17 latch-up immunity | Guarantees operation in electrically harsh environments without destructive latch-up events. |
| SOIC-28 footprint compatibility | Direct replacement for legacy 74-series 28-pin drivers (e.g., SN74ABT244, SN74ABT240) in space-constrained layouts. |
Applications
| Memory Address Buffering | Bus Transceiver Interface |
|---|---|
Use Scenario: Driving 12-bit address buses between microcontroller and SRAM/ROM in embedded control systems. IC Role / Device Role / Timing Role: Inverting 3-state address driver providing isolation and fanout expansion between processor and memory chips. Use Value: Integrated 25-Ω series resistors suppress overshoot on long traces, enabling reliable 20+ MHz address strobing without added termination components. |
Use Scenario: Bidirectional data bus conditioning in industrial PLC backplanes with shared address/data multiplexing. IC Role / Device Role / Timing Role: Unidirectional buffer stage controlling direction and timing of data flow between master and peripheral modules. Use Value: Dual OE inputs allow precise timing control of bus release, preventing contention during handshaking protocols like ISA or custom parallel interfaces. |
| Clock Distribution Network | Legacy System Upgrade |
Use Scenario: Fanout and level-shifting of system clocks to multiple synchronous peripherals in test equipment. IC Role / Device Role / Timing Role: Low-skew inverting clock buffer with controlled edge rates for jitter-sensitive timing paths. Use Value: Propagation delay consistency (tPLH/tPHL ≤ 6.9 ns) and low VOLP ensure minimal clock skew across 12 outputs in multi-sink configurations. |
Use Scenario: Drop-in upgrade of obsolete 74F/74AS logic in avionics maintenance spares requiring extended temperature support. IC Role / Device Role / Timing Role: Pin-compatible replacement for aging memory drivers needing improved ESD robustness and lower power. Use Value: Industrial temp range (–40°C to 85°C), >500 mA latch-up immunity, and 7 V absolute max rating extend field life beyond legacy bipolar parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT240N | Octal (8-bit), non-inverting/inverting dual configuration; no integrated 25-Ω resistors. | Suitable for smaller bus widths; lacks on-die termination, requiring external resistors for clean edges. | Select when pin count or cost constraints favor octal density and board-level termination is acceptable. |
| SN74LVC125APW | Quad (4-bit), 3.3-V only, non-inverting; no internal termination; CMOS process, lower drive (±24 mA). | Requires level translation for 5-V systems; better for low-voltage, low-power portable designs. | Choose only in new 3.3-V designs where voltage compatibility and lower ICCQ are prioritized over 5-V interoperability. |
Compared with SN74ABT240N and SN74LVC125APW, the SN74ABT5403DWR uniquely combines 12-bit width, 5-V operation, integrated 25-Ω termination, and industrial temperature range - making it optimal for legacy 5-V memory and bus systems requiring drop-in reliability and reduced layout complexity.
Availability
SN74ABT5403DWR is available at Aetrix Electronics and suitable for memory subsystem design, industrial bus interface development, and legacy system repair requiring stable component supply and long-term obsolescence mitigation.
Supply support for SN74ABT5403DWR 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
Texas Instruments is a global semiconductor leader founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and communications reach.
The SN74ABT5403 belongs to TI's ABT (Advanced BiCMOS Technology) logic family, engineered for high-speed, low-noise 5-V bus interfacing with enhanced robustness in electrically demanding environments.
FAQ
What is the operating temperature range for SN74ABT5403DWR?
The SN74ABT5403DWR is characterized for operation from –40°C to +85°C, meeting industrial-grade environmental requirements. This range is validated per JEDEC standards and applies to all electrical specifications in the datasheet, including propagation delay, drive strength, and 3-state leakage. The SN74ABT5403DWR maintains guaranteed performance across this full span without derating.
Does SN74ABT5403DWR require external series resistors on its outputs?
No, the SN74ABT5403DWR does not require external series resistors because it integrates 25-Ω output series resistors internally. This feature is explicitly documented in the datasheet under "Output Ports Have Equivalent 25-Ω Series Resistors, So No External Resistors Are Required." It reduces PCB component count and improves signal integrity on transmission lines up to ~100 MHz.
How does the 3-state enable logic work on SN74ABT5403DWR?
The SN74ABT5403DWR uses dual active-low output-enable inputs (OE1 and OE2) connected through an internal AND gate. When both OE1 and OE2 are low, outputs reflect inverted input states; if either OE1 or OE2 is high, all 12 outputs enter high-impedance mode. This architecture allows flexible bus arbitration and prevents contention in multi-driver systems.
Is SN74ABT5403DWR pin-compatible with other 28-pin SOIC logic devices?
Yes, the SN74ABT5403DWR uses the standard SOIC-28 (DW) package with 1.27 mm pitch and 300-mil body width, matching mechanical footprints of industry-standard 28-pin logic ICs such as SN74ABT244, SN74ABT240, and SN74ACT573. Pin assignments follow TI's consistent 74-series numbering convention, enabling direct PCB replacement in many legacy designs.
What is the maximum output current rating per pin for SN74ABT5403DWR?
The SN74ABT5403DWR supports ±12 mA DC output current per pin - +12 mA sink (IOL) and –12 mA source (IOH) - under recommended operating conditions (VCC = 4.5 V to 5.5 V, TA = –40°C to 85°C). This rating is confirmed in the "Recommended Operating Conditions" and "Electrical Characteristics" tables of the official SCBS236B datasheet.
SN74ABT5403DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 12
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
SN74ABT5403DWR FAQ
1.How can I place an order for SN74ABT5403DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT5403DWR 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 SN74ABT5403DWR reliable?
The price and inventory of SN74ABT5403DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT5403DWR is usually 5 days.
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SN74ABT5403DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT5403DWR 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 SN74ABT5403DWR?
For technical support, including SN74ABT5403DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT5403DWR requirements.
6.How does Aetrix verify that SN74ABT5403DWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT5403DWR 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 SN74ABT5403DWR meets industry standards.
7.What is the process for return or replacement of SN74ABT5403DWR?
All SN74ABT5403DWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT5403DWR, 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 SN74ABT5403DWR part is unused and in its original packaging.
Return procedure for SN74ABT5403DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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