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Texas Instruments SN74ABT2827DW
- Part No.:
- SN74ABT2827DW
- Manufacturer:
- Texas Instruments
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT2827DW.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,695
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Product details
Overview
SN74ABT2827DW from Texas Instruments is a 10-bit noninverting buffer/driver with dual 3-state enable inputs (OE1, OE2), designed for high-speed bus interface in wide data paths carrying parity. It operates from 4.5 V to 5.5 V, supports –40°C to 85°C ambient, features integrated 25-Ω output series resistors, and delivers ±12 mA drive capability per output.
For engineers reviewing the SN74ABT2827DW datasheet, SN74ABT2827DW pinout, SN74ABT2827DW application, or SN74ABT2827DW equivalent, this device is selected for robust 5-V TTL-compatible bus buffering where low ground bounce (<1 V typical VOLP), latch-up immunity (>500 mA), and flow-through PCB layout optimization are critical.
Technical Context
The SN74ABT2827DW implements a dual-input AND-gated 3-state control logic: both OE1 and OE2 must be low to enable outputs; either high forces all ten Y outputs into high-impedance. Its EPIC-IIB BiCMOS process enables low power dissipation while maintaining TTL-level input thresholds (VIL = 0.8 V, VIH = 2 V) and fast switching (tPLH/tPHL ≤ 5.5 ns at 5 V).
Each output includes on-die 25-Ω series termination to suppress overshoot/undershoot without external components. The flow-through pinout (A1–A10 on left, Y1–Y10 on right, OE1/OE2 at ends) minimizes trace crossovers in dense PCB layouts, and the SOIC-24 package supports standard reflow with MSL Level-1 rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL and CMOS systems without level-shifting. |
| Output Drive | ±12 mA per Y pin - Sufficient to drive multiple TTL loads or moderate capacitive buses directly. |
| Propagation Delay | tPLH/tPHL ≤ 5.5 ns @ 5 V, CL = 50 pF - Enables reliable operation in high-speed data paths up to ~180 MHz toggle rate. |
| Input Thresholds | VIH = 2 V, VIL = 0.8 V - Matches standard TTL logic levels for seamless interfacing with legacy 5-V controllers and FPGAs. |
| Output Termination | Integrated 25-Ω series resistor per Y pin - Eliminates need for external series resistors, reducing BOM count and PCB area. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded systems including communications backplanes and test equipment. |
| Ground Bounce | VOLP < 1 V @ VCC = 5 V, TA = 25°C - Minimizes noise coupling during simultaneous output switching, improving signal integrity. |
Pinout & Package
SN74ABT2827DW is housed in a 24-pin plastic small-outline integrated circuit (SOIC) package (DW), 7.5 mm wide, with 1.27 mm pitch and gull-wing leads. Pin 1 is marked by a beveled corner or notch; the package is RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | OE1, OE2 | Active-low 3-state enable inputs - Dual AND-gated control ensures outputs go high-Z if either is high; tie to VCC via pullup for power-up safety. |
| 2–11 | A1–A10 | Data inputs - Noninverting inputs accepting TTL/CMOS logic; unused inputs must be tied high or low to prevent floating. |
| 13 | GND | Ground reference - Primary return path for all I/O and internal circuitry; requires low-inductance connection. |
| 12 | VCC | Power supply - 4.5–5.5 V supply; bypass with 0.1 µF ceramic capacitor near pin for noise suppression. |
| 14–23 | Y1–Y10 | True-buffered outputs - Each includes 25-Ω series resistor; capable of sourcing/sinking ±12 mA while maintaining VOH ≥ 2.4 V and VOL ≤ 0.8 V. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB BiCMOS Process | Reduces dynamic power vs. pure bipolar while retaining TTL speed and drive strength - critical for thermally constrained boards. |
| Flow-Through Pinout | Input A1–A10 on left side, output Y1–Y10 on right side - Enables straight-layer routing with minimal vias or layer jumps in dense bus designs. |
| On-Die 25-Ω Series Termination | Eliminates 10 external resistors - saves PCB space, reduces assembly cost, and improves impedance matching on controlled-impedance traces. |
| Latch-Up Immunity | Exceeds 500 mA per JEDEC JESD-17 - Ensures robustness against transient overcurrent events in noisy industrial environments. |
| Low Ground Bounce | VOLP < 1 V typical - Maintains clean logic thresholds during parallel output switching, reducing timing margin erosion. |
Applications
| Backplane Data Bus Interface | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Buffering 10-bit address/data lines between a microcontroller and modular I/O cards in a DIN-rail mounted PLC chassis. IC Role / Device Role / Timing Role: Noninverting bus driver providing level-consistent, slew-controlled signal transmission across 150-mm backplane traces. Use Value: Integrated 25-Ω termination suppresses reflections on long traces, while ±12 mA drive ensures signal integrity across 10+ TTL loads per line. |
Use Scenario: Isolating and driving parity bits alongside main data lanes in a fault-tolerant industrial controller with hot-swap capability. IC Role / Device Role / Timing Role: 3-state-enabled buffer enabling dynamic bus sharing between redundant CPU modules during failover transitions. Use Value: Dual OE inputs allow independent control of bus access timing; fast tPZL ≤ 7.8 ns ensures glitch-free arbitration handoff. |
| Test Equipment Signal Conditioning | Legacy System Bus Extender |
|
Use Scenario: Driving calibrated 50-Ω coaxial cables from a digital pattern generator to DUT inputs in automated test fixtures. IC Role / Device Role / Timing Role: Impedance-matched output stage minimizing rise-time degradation and ringing on 1–2 m cable runs. Use Value: On-die 25-Ω series resistor combined with 5-V drive yields near-50-Ω effective source impedance into 50-Ω loads. |
Use Scenario: Interfacing a modern FPGA-based subsystem with an aging 10-bit ISA-style peripheral bus operating at 8 MHz. IC Role / Device Role / Timing Role: Logic-level translator and current booster ensuring full TTL voltage compliance despite FPGA's weaker 5-V drive. Use Value: VIH/VIL thresholds match legacy ISA specs; ±12 mA output current meets original bus loading requirements without external buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT244N | Octal (8-bit), not 10-bit; identical SOIC-20 package, same EPIC-IIB process and 25-Ω termination. | Suitable only when bus width is ≤8 bits; requires two devices for 10-bit coverage, increasing layout area and supply current. | Select SN74ABT244N only if system uses 8-bit sub-buses or allows cascaded placement; SN74ABT2827DW avoids duplication overhead. |
| SN74LVC244APWR | 3.3-V only (1.65–3.6 V), LVCMOS logic levels, no integrated series resistors, 24-pin TSSOP package. | Requires level-shifting for 5-V systems; external 33-Ω resistors needed for 50-Ω source matching; lower drive (±24 mA) but higher speed. | Choose SN74LVC244APWR only in new 3.3-V designs with tight timing budgets; SN74ABT2827DW remains optimal for existing 5-V infrastructure. |
Compared with SN74ABT244N and SN74LVC244APWR, the SN74ABT2827DW uniquely delivers native 10-bit width, 5-V TTL compatibility, and integrated 25-Ω termination in a single SOIC-24 package-reducing component count, simplifying layout, and preserving signal integrity in legacy and industrial 5-V bus systems.
Availability
SN74ABT2827DW is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and legacy system upgrades requiring stable component supply, long-term manufacturability, and guaranteed 5-V TTL interoperability.
Supply support for SN74ABT2827DW 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 specializing in analog, embedded processing, and logic solutions, with decades of heritage in high-reliability 5-V logic families.
The SN74ABT2827DW belongs to TI's ABT-series advanced biCMOS bus transceivers, engineered specifically for high-speed, low-noise 5-V data-path buffering in industrial, telecom, and computing infrastructure where signal fidelity and thermal efficiency are critical.
FAQ
What is the recommended power supply decoupling for SN74ABT2827DW?
Place a 0.1 µF ceramic capacitor between VCC (pin 12) and GND (pin 13) as close as possible to the SN74ABT2827DW package. For systems with heavy simultaneous switching, add a 4.7 µF tantalum or aluminum electrolytic capacitor nearby. This stabilizes VCC during output transitions and suppresses ground bounce, which is critical because the SN74ABT2827DW exhibits typical VOLP < 1 V under such conditions.
How should unused input pins be handled on SN74ABT2827DW?
All unused A1–A10 and OE1/OE2 inputs on the SN74ABT2827DW must be tied either to VCC or GND - never left floating. Floating inputs can cause increased ICC, erratic output behavior, or excessive noise susceptibility due to undefined logic states. OE inputs should be pulled up to VCC via a 10-kΩ resistor to ensure high-impedance state during power-up, as specified in the SN74ABT2827DW datasheet.
Does SN74ABT2827DW support hot-plug or live-insertion applications?
The SN74ABT2827DW is not rated for hot-plug operation. Its absolute maximum ratings specify VCC down to –0.5 V and VI down to –0.5 V, but no Ioff or powered-off I/O protection is guaranteed during partial power application. For live-insertion, additional protection circuitry (e.g., series resistors, TVS diodes) and careful sequencing are required. The SN74ABT2827DW is intended for fixed-installation industrial systems with controlled power cycles.
Can SN74ABT2827DW drive 50-Ω transmission lines directly?
Yes - each Y output of the SN74ABT2827DW integrates a 25-Ω series resistor, enabling direct drive of 50-Ω loads (e.g., coaxial cables or PCB traces) when terminated at the far end. With VCC = 5 V and 12 mA drive, the effective source impedance matches closely, minimizing reflections. This eliminates external resistors and is confirmed by the SN74ABT2827DW's "Output Ports Have Equivalent 25-Ω Series Resistors" specification.
What is the thermal performance of SN74ABT2827DW in SOIC-24 package?
The SN74ABT2827DW in DW package has a junction-to-ambient thermal resistance (θJA) of 81°C/W under standard JEDEC test conditions. At maximum rated ICC (40 mA) and worst-case ambient (85°C), junction temperature remains within safe limits (<125°C) with minimal copper pour. For high-density layouts, adding thermal vias under the exposed pad (if present) or using inner-layer copper planes improves heat dissipation - though the DW package has no thermal pad.
SN74ABT2827DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 10
- 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:
- 24-SOIC
SN74ABT2827DW FAQ
1.How can I place an order for SN74ABT2827DW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT2827DW 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 SN74ABT2827DW reliable?
The price and inventory of SN74ABT2827DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT2827DW is usually 5 days.
3.What payment methods are accepted for SN74ABT2827DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT2827DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT2827DW?
SN74ABT2827DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT2827DW 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 SN74ABT2827DW?
For technical support, including SN74ABT2827DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT2827DW requirements.
6.How does Aetrix verify that SN74ABT2827DW is sourced from the original manufacturer or authorized distributors?
All SN74ABT2827DW 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 SN74ABT2827DW meets industry standards.
7.What is the process for return or replacement of SN74ABT2827DW?
All SN74ABT2827DW units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT2827DW, 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 SN74ABT2827DW part is unused and in its original packaging.
Return procedure for SN74ABT2827DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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