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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74ABT162827DLR

Name: SN74ABT162827DLR
Brand: Texas Instruments
SKU: SN74ABT162827DLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74ABT162827DLR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: -

Datasheet:: SN74ABT162827DLR.pdf

Description:: BUS DRIVER, ABT SERIES, 10-BIT6

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Product details

Overview

SN74ABT162827DLR from Texas Instruments is a noninverting 20-bit buffer IC with dual 10-bit sections, separate output-enable controls (1OE1/1OE2 and 2OE1/2OE2), 25-Ω integrated series output resistors, ±12 mA drive capability, and operation over −40°C to 85°C. It serves as a high-speed bus interface buffer in backplane and motherboard data routing applications.

For engineers reviewing the SN74ABT162827DLR datasheet, SN74ABT162827DLR pinout, SN74ABT162827DLR application, or SN74ABT162827DLR equivalent, key selection criteria include its flow-through pinout for optimized PCB layout, distributed V_CC/GND configuration for noise suppression, EPIC-II^B BiCMOS process for low power, and guaranteed 3.9 ns max t_PHL at 5 V.

Technical Context

The SN74ABT162827DLR implements two independent 10-bit noninverting buffers, each requiring both OE inputs low to enable outputs; either OE high forces high-impedance state. Its EPIC-II^B BiCMOS architecture enables 5-V operation with reduced dynamic power versus standard TTL.

Each output integrates a 25-Ω series resistor to suppress overshoot/undershoot without external termination. The DL package features 56-pin shrink small-outline construction with flow-through pin arrangement, distributed power/ground pins, and JEDEC MO-118 compliance.

Key Specifications

Parameter	Value and Actual Design Meaning
Function	Noninverting 20-bit dual-buffer with independent 10-bit OE control
V_CC Range	4.5 V to 5.5 V - compatible with standard 5-V logic systems
I_OH/I_OL	±12 mA - drives terminated or unterminated transmission lines directly
t_PHL/t_PLH	Max 4.1 ns / 3.9 ns at V_CC = 5 V, T_A = 25°C - supports >200 MHz data rates
Output Series R	25 Ω integrated - eliminates need for external source-series termination resistors
Operating Temp	−40°C to +85°C - qualified for industrial-grade embedded and computing systems
Input Clamp I_IK	−18 mA - protects against negative transients on data/control lines

Pinout & Package

SN74ABT162827DLR uses a 56-pin plastic shrink small-outline package (SSOP-DL), 13.9 mm × 14.1 mm body, 0.5 mm pitch, JEDEC MO-118 compliant, with gull-wing leads and flow-through signal routing.

Pin/Terminal	Circuit Role	Design Meaning
1OE1, 1OE2, 2OE1, 2OE2	Active-low output-enable inputs per 10-bit section	Both OE signals must be low to enable corresponding Y outputs; single high disables entire 10-bit bank
1A1–1A10, 2A1–2A10	Data inputs for respective 10-bit buffers	Noninverting inputs routed to corresponding Y outputs when OE pair is active
1Y1–1Y10, 2Y1–2Y10	Buffered noninverting outputs	Each includes 25-Ω series resistor; capable of sourcing/sinking ±12 mA into 50-Ω loads
V_CC (Pins 7, 22, 36, 48)	Power supply connections	Distributed V_CC pins minimize simultaneous switching noise and improve PSRR
GND (Pins 4, 11, 18, 29, 33, 40, 46, 53)	Ground return connections	Eight GND pins provide low-inductance return paths and reduce ground bounce (V_OLP < 1 V typical)

Key Features

Feature	Design Value
Integrated 25-Ω output series resistors	Eliminates external termination components, reduces BOM count, and ensures clean edge integrity on FR-4 traces
Flow-through pin architecture	Enables straight-layer PCB routing with minimal layer transitions and stub-free interconnects
Distributed V_CC/GND pinning	Reduces high-frequency switching noise and improves signal integrity in dense backplane interfaces
EPIC-II^B BiCMOS process	Delivers TTL-compatible speed with CMOS-level static power consumption (2 mA ICC disabled)
Latch-up immunity	Exceeds 500 mA per JEDEC JESD-17 - robust against transient-induced SCR triggering

Applications

Backplane Data Buffering	Memory Module Interface
Use Scenario: Bidirectional data buffering between CPU/memory controller and multiple DIMM slots in server motherboards. IC Role / Device Role / Timing Role: Noninverting 20-bit bus repeater isolating load capacitance while preserving timing margins. Use Value: Integrated 25-Ω resistors suppress reflections on parallel DDRx address/control buses, enabling stable 800+ MT/s operation without added termination.	Use Scenario: Level-shifting and fanout buffering for SPD EEPROM communication lines across multi-slot memory subsystems. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer for SMBus/I²C-compatible control signals with guaranteed VOL ≤ 0.65 V at 12 mA. Use Value: Dual independent OE control allows selective activation per memory channel, reducing system-level standby current by disabling unused banks.
Industrial PLC Backplane	Test Equipment Signal Routing
Use Scenario: Isolating and driving parallel I/O data paths between CPU module and modular I/O carrier boards in programmable logic controllers. IC Role / Device Role / Timing Role: Robust 5-V tolerant buffer with latch-up immunity (>500 mA) for noisy factory-floor environments. Use Value: −40°C to +85°C rating and 25-Ω series termination ensure reliable signal integrity across wide temperature swings and long trace runs.	Use Scenario: Reconfigurable signal path routing in automated test equipment (ATE) digital pattern generators and capture units. IC Role / Device Role / Timing Role: High-speed, low-skew buffer enabling precise timing alignment across multiple DUT channels. Use Value: Max 4.1 ns propagation delay variation (t_PHL/t_PLH) and flow-through pinout support sub-nanosecond channel-to-channel skew control.

Backplane Data Buffering

Memory Module Interface

Use Scenario: Bidirectional data buffering between CPU/memory controller and multiple DIMM slots in server motherboards.

IC Role / Device Role / Timing Role: Noninverting 20-bit bus repeater isolating load capacitance while preserving timing margins.

Use Value: Integrated 25-Ω resistors suppress reflections on parallel DDRx address/control buses, enabling stable 800+ MT/s operation without added termination.

Use Scenario: Level-shifting and fanout buffering for SPD EEPROM communication lines across multi-slot memory subsystems.

IC Role / Device Role / Timing Role: Low-skew, high-drive buffer for SMBus/I²C-compatible control signals with guaranteed VOL ≤ 0.65 V at 12 mA.

Use Value: Dual independent OE control allows selective activation per memory channel, reducing system-level standby current by disabling unused banks.

Industrial PLC Backplane

Test Equipment Signal Routing

Use Scenario: Isolating and driving parallel I/O data paths between CPU module and modular I/O carrier boards in programmable logic controllers.

IC Role / Device Role / Timing Role: Robust 5-V tolerant buffer with latch-up immunity (>500 mA) for noisy factory-floor environments.

Use Value: −40°C to +85°C rating and 25-Ω series termination ensure reliable signal integrity across wide temperature swings and long trace runs.

Use Scenario: Reconfigurable signal path routing in automated test equipment (ATE) digital pattern generators and capture units.

IC Role / Device Role / Timing Role: High-speed, low-skew buffer enabling precise timing alignment across multiple DUT channels.

Use Value: Max 4.1 ns propagation delay variation (t_PHL/t_PLH) and flow-through pinout support sub-nanosecond channel-to-channel skew control.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 20-bit noninverting buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ABT16244DLR	16-bit (two 8-bit sections), no integrated 25-Ω resistors, identical DL package and voltage specs	Lower pin count; requires external series termination for clean edges on high-speed traces	Select when 16-bit width suffices and board space allows discrete termination.
SN74LVC16244ADGGR	16-bit, 3.3-V only (1.65–3.6 V), no integrated series resistors, lower drive (24 mA), TSSOP-48	Not 5-V tolerant; incompatible with legacy 5-V bus systems without level translation	Choose only for new 3.3-V designs where lower power and smaller footprint outweigh compatibility needs.

Compared with SN74ABT162827DLR, SN74ABT16244DLR offers matching 5-V operation and package but reduced width and no built-in termination; SN74LVC16244ADGGR provides higher drive and smaller size but lacks 5-V tolerance and integrated resistors-making SN74ABT162827DLR uniquely suited for drop-in replacement in existing 5-V, high-integrity bus applications.

Availability

SN74ABT162827DLR is available at Aetrix Electronics and suitable for industrial control backplanes, server memory interfaces, automated test equipment signal routing, and programmable logic controller I/O expansion requiring stable component supply and long-term obsolescence management.

Supply support for SN74ABT162827DLR 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, logic, and interface solutions for industrial, automotive, and communications markets.

The SN74ABT162827DLR belongs to TI's Widebus™ family of high-speed bus-interface logic, designed specifically for low-noise, high-fanout data routing in 5-V computing and industrial systems.

FAQ

What is the recommended power-up sequence for SN74ABT162827DLR to ensure high-impedance outputs?

TI recommends tying all OE inputs (1OE1, 1OE2, 2OE1, 2OE2) to V_CC via pullup resistors during power-up and power-down. The minimum resistor value depends on the driver's sink capability; this prevents unintended output activation before system initialization completes. This requirement applies specifically to SN74ABT162827DLR due to its active-low OE architecture and lack of internal power-on reset.

Does SN74ABT162827DLR support hot-swap or live-insertion applications?

SN74ABT162827DLR is not rated for hot-swap operation. Its absolute maximum ratings do not include powered insertion stress testing, and the absence of I_off protection during V_CC ramp-up means uncontrolled current flow may occur if inputs are driven before V_CC stabilizes. For hot-swap use cases, TI recommends dedicated hot-swap controllers paired with discrete buffers-not SN74ABT162827DLR.

Can SN74ABT162827DLR drive 50-Ω transmission lines directly without external termination?

Yes. SN74ABT162827DLR integrates 25-Ω series resistors on all 20 outputs, enabling direct drive of 50-Ω PCB traces or cables with matched source termination. This eliminates the need for external 25-Ω resistors and ensures minimal overshoot/undershoot-confirmed by TI's typical V_OLP < 1 V measurement at 5 V and 25°C.

What is the maximum clock/data rate supported by SN74ABT162827DLR in practice?

Based on its 3.9 ns max t_PLH and 4.1 ns max t_PHL at 5 V, SN74ABT162827DLR supports reliable data rates up to 200+ MHz in well-designed FR-4 layouts. Real-world performance depends on trace length, load capacitance, and termination; TI's flow-through pinout and distributed V_CC/GND help maintain signal integrity at these speeds-verified in SN74ABT162827DLR characterization reports.

Is SN74ABT162827DLR pin-compatible with other Widebus™ 20-bit buffers like SN74ABT16245?

No. SN74ABT162827DLR has a unique 56-pin DL package with flow-through pin mapping optimized for dual 10-bit sections and four OE inputs. SN74ABT16245 uses a different pinout (56-pin, but distinct signal assignment) and implements direction control instead of dual OE per bank. Interchangeability is not supported-designers must route specifically for SN74ABT162827DLR's pin configuration.

SN74ABT162827DLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Logic Type:: -

Number of Elements:: -

Number of Bits per Element:: -

Input Type:: -

Output Type:: -

Current - Output High, Low:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

SN74ABT162827DLR FAQ

1.How can I place an order for SN74ABT162827DLR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ABT162827DLR 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 SN74ABT162827DLR reliable?

The price and inventory of SN74ABT162827DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT162827DLR is usually 5 days.

3.What payment methods are accepted for SN74ABT162827DLR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT162827DLR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74ABT162827DLR?

SN74ABT162827DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ABT162827DLR 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 SN74ABT162827DLR?

For technical support, including SN74ABT162827DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT162827DLR requirements.

6.How does Aetrix verify that SN74ABT162827DLR is sourced from the original manufacturer or authorized distributors?

All SN74ABT162827DLR 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 SN74ABT162827DLR meets industry standards.

7.What is the process for return or replacement of SN74ABT162827DLR?

All SN74ABT162827DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT162827DLR, 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 SN74ABT162827DLR part is unused and in its original packaging.

Return procedure for SN74ABT162827DLR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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