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

Texas Instruments SN74ABT16652DL

Name: SN74ABT16652DL
Brand: Texas Instruments
SKU: SN74ABT16652DL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74ABT16652DL

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-BSSOP (0.295", 7.50mm Width)

Datasheet:: SN74ABT16652DL.pdf

Description:: IC TXRX NON-INVERT 5.5V 56SSOP

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Product details

Overview

SN74ABT16652DL from Texas Instruments is a 16-bit bus transceiver and register IC with 3-state outputs, designed for high-speed bidirectional data routing between two 16-bit buses (A and B). It supports real-time or registered data transfer via dual clock (CLKAB/CLKBA) and select (SAB/SBA) controls, delivers ±32-mA/64-mA drive strength, and operates from –40°C to 85°C in a 56-pin SSOP (DL) package - used in backplane interface logic and programmable logic interconnects.

For engineers reviewing the SN74ABT16652DL datasheet, SN74ABT16652DL pinout, SN74ABT16652DL application, or SN74ABT16652DL equivalent, key selection criteria include its dual 8-bit/multiplexed 16-bit operation mode, latch-up immunity (>500 mA), distributed V_CC/GND pinning for noise reduction, and flow-through architecture enabling optimized PCB layout in dense digital systems.

Technical Context

The SN74ABT16652DL integrates two independent 8-bit D-type flip-flop banks (A-side and B-side), each with dedicated clock, select, and output-enable inputs. Its control logic eliminates multiplexer glitches during transitions between real-time and stored data paths by using synchronous edge-triggered clocks and level-sensitive select inputs.

It implements EPIC-II^B BiCMOS design for low power dissipation while maintaining TTL-compatible input thresholds (V_IL = 0.8 V, V_VIH = 2.0 V) and high-drive CMOS outputs (–32 mA I_OH, 64 mA I_OL). The device supports simultaneous storage on both buses or cross-bus transfer of stored data, with configurable isolation via OEAB/OEBA.

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 mixed-voltage system rails.
Operating Temperature	–40°C to +85°C - qualified for industrial-grade embedded control and communications equipment.
Max Clock Frequency	125 MHz - enables high-throughput data handshaking in synchronous bus architectures.
Output Drive Strength	–32 mA I_OH, 64 mA I_OL - drives heavy capacitive loads and multiple TTL inputs without external buffers.
Propagation Delay	t_PLH/t_PHL ≤ 4.9 ns (CLK→B/A) - supports sub-8 ns timing budgets in fast bus arbitration logic.
Input Hysteresis	100 mV - improves noise immunity on shared control lines in electrically noisy backplane environments.
Package Type	56-pin SSOP (DL), 300-mil body width - surface-mount compatible with standard industrial reflow profiles (MSL Level-1).

Pinout & Package

SN74ABT16652DL uses a 56-pin Shrink Small-Outline Package (SSOP-DL) with 0.65-mm lead pitch and 300-mil body width. Pin numbering follows standard top-view orientation with Pin 1 at bottom-left corner.

Pin/Terminal	Circuit Role	Design Meaning
1OEAB, 2OEAB, 1OEBA, 2OEBA	Output Enable (A↔B direction)	Active-low enables 3-state output drivers; OEAB controls A→B path, OEBA controls B→A path.
1CLKAB, 2CLKAB, 1CLKBA, 2CLKBA	Clock Inputs	Rising-edge triggered; latches data from A or B bus into internal D-flip-flops for registered transfer.
1SAB, 2SAB, 1SBA, 2SBA	Select Control Inputs	High selects stored data; low selects real-time bus data - eliminates glitch during mode switching.
A1–A8, A1–A8, B1–B8, B1–B8	Bus I/O Terminals	Two 8-bit bidirectional ports (A and B); support concurrent or split 16-bit operation with flow-through routing.
V_CC, GND (×8 total)	Distributed Power/Ground	Multiple V_CC/GND pins minimize simultaneous switching noise and improve signal integrity at >100 MHz.

Key Features

Feature	Design Value
Latch-up immunity	Exceeds 500 mA per JEDEC JESD-17 - enables robust operation in high-noise industrial environments.
Output ground bounce (V_OLP)	<1 V at V_CC = 5 V - reduces false triggering in adjacent logic due to transient supply droop.
Flow-through architecture	Input and output pins positioned on opposite sides of package - simplifies layer routing and minimizes trace crossovers.
Real-time vs. stored data selection	No decoding glitch during SAB/SBA transitions - ensures deterministic bus state during dynamic mode changes.
High-drive 3-state outputs	–32 mA I_OH, 64 mA I_OL - eliminates need for external bus buffers in multi-drop configurations.

Applications

Backplane Data Routing	Programmable Logic Interconnect
Use Scenario: Bidirectional data exchange between CPU and peripheral modules across a 16-bit parallel backplane. IC Role / Device Role / Timing Role: Bus transceiver and register providing isolated, glitch-free data staging between asynchronous subsystems. Use Value: Enables clock-domain crossing with storage capability and eliminates bus contention during hot-swap events.	Use Scenario: Configurable data path between FPGA I/O banks and external memory or ASIC interfaces. IC Role / Device Role / Timing Role: Registered transceiver synchronizing burst transfers between logic fabric and off-chip resources. Use Value: Provides setup/hold margin for high-speed memory reads/writes while supporting real-time bypass when latency-critical.
Industrial Control Bus Interface	Digital Signal Processor (DSP) Memory Bridge
Use Scenario: Interfacing microcontroller peripherals (ADC, DAC, encoder) to a shared 16-bit control bus. IC Role / Device Role / Timing Role: Direction-controlled bus isolator with local data retention for fault-tolerant state capture. Use Value: Maintains last valid sensor or actuator state during processor reset or firmware update cycles.	Use Scenario: Connecting DSP external memory controller to dual-port SRAM or FIFO buffers. IC Role / Device Role / Timing Role: High-drive bidirectional data buffer with selectable pipeline depth (0 or 1 cycle). Use Value: Supports both zero-latency streaming and pipelined burst modes without redesigning PCB layout.

Backplane Data Routing

Programmable Logic Interconnect

Use Scenario: Bidirectional data exchange between CPU and peripheral modules across a 16-bit parallel backplane.

IC Role / Device Role / Timing Role: Bus transceiver and register providing isolated, glitch-free data staging between asynchronous subsystems.

Use Value: Enables clock-domain crossing with storage capability and eliminates bus contention during hot-swap events.

Use Scenario: Configurable data path between FPGA I/O banks and external memory or ASIC interfaces.

IC Role / Device Role / Timing Role: Registered transceiver synchronizing burst transfers between logic fabric and off-chip resources.

Use Value: Provides setup/hold margin for high-speed memory reads/writes while supporting real-time bypass when latency-critical.

Industrial Control Bus Interface

Digital Signal Processor (DSP) Memory Bridge

Use Scenario: Interfacing microcontroller peripherals (ADC, DAC, encoder) to a shared 16-bit control bus.

IC Role / Device Role / Timing Role: Direction-controlled bus isolator with local data retention for fault-tolerant state capture.

Use Value: Maintains last valid sensor or actuator state during processor reset or firmware update cycles.

Use Scenario: Connecting DSP external memory controller to dual-port SRAM or FIFO buffers.

IC Role / Device Role / Timing Role: High-drive bidirectional data buffer with selectable pipeline depth (0 or 1 cycle).

Use Value: Supports both zero-latency streaming and pipelined burst modes without redesigning PCB layout.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus transceiver and register applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ABT162245DL	Non-registering 16-bit transceiver; no clock or storage capability; identical 56-pin SSOP package.	Suitable only for real-time-only bus bridging; lacks data retention or synchronous handshaking.	Select when deterministic zero-latency transfer is required and register functionality is unnecessary.
SN74LVTH16652DL	Lower voltage (3.3 V) variant; reduced drive (–24 mA/48 mA); same pinout and functional logic.	Designed for mixed 3.3-V/5-V systems; requires level-shifting if interfacing to legacy 5-V logic.	Choose for power-sensitive designs where 5-V tolerance is not required and lower static current matters.

Compared with SN74ABT16652DL, SN74ABT162245DL removes clocked storage but simplifies control logic, while SN74LVTH16652DL trades drive strength and voltage range for lower power and 3.3-V compatibility - neither offers drop-in replacement without verifying timing margins and voltage translation needs.

Availability

SN74ABT16652DL is available at Aetrix Electronics and suitable for industrial control systems, programmable logic interconnects, and backplane data routing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74ABT16652DL 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 interface and bus technology.

The SN74ABT16652DL belongs to TI's Widebus™ family of advanced bus interface devices, engineered for high-speed, low-noise, and latch-up-resistant operation in demanding industrial and communications infrastructure applications.

FAQ

What is the maximum clock frequency supported by the SN74ABT16652DL?

The SN74ABT16652DL supports a maximum clock frequency of 125 MHz under recommended operating conditions (V_CC = 5 V, T_A = 25°C). This rating is confirmed in the timing requirements table of the official datasheet SCBS215B, and applies to both CLKAB and CLKBA inputs for reliable data registration across all 16 bits.

Does the SN74ABT16652DL support hot insertion or live bus swapping?

The SN74ABT16652DL does not include built-in hot-swap protection circuitry, but its high latch-up immunity (>500 mA per JEDEC JESD-17) and controlled 3-state output behavior enable safe use in hot-plug-capable systems when OEAB and OEBA are properly managed during insertion. TI recommends tying OEBA to V_CC via pull-up and OEAB to GND via pulldown during power-up to ensure high-impedance states.

Can the SN74ABT16652DL operate with a 3.3-V supply?

No - the SN74ABT16652DL is specified only for 4.5 V to 5.5 V operation. Its input thresholds, output drive characteristics, and internal BiCMOS structure are optimized for 5-V TTL compatibility. For 3.3-V systems, TI recommends the functionally similar SN74LVTH16652DL, which shares the same pinout but is rated for 3.3-V operation.

How many independent data paths does the SN74ABT16652DL provide?

The SN74ABT16652DL provides two fully independent 8-bit data paths (A1–A8/B1–B8 and A9–A16/B9–B16), each with dedicated clock, select, and output-enable controls. These can be used separately as dual 8-bit transceivers or combined as a single 16-bit unit - enabling flexible partitioning of bus bandwidth and timing domains within one IC.

What is the purpose of the distributed V_CC and GND pins on the SN74ABT16652DL?

The SN74ABT16652DL features eight distributed V_CC and GND pins strategically placed across the 56-pin SSOP package to minimize simultaneous switching noise and reduce ground bounce. This layout lowers inductive impedance in high-frequency switching paths, directly improving signal integrity and enabling stable operation at 125 MHz clock rates in dense PCB layouts.

SN74ABT16652DL Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ABT

Package/Case:: 56-BSSOP (0.295", 7.50mm Width)

Packaging:: Bulk

Product Status:: Active

Logic Type:: Transceiver, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 8

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 32mA, 64mA

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-SSOP

SN74ABT16652DL FAQ

1.How can I place an order for SN74ABT16652DL through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ABT16652DL 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 SN74ABT16652DL reliable?

The price and inventory of SN74ABT16652DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16652DL is usually 5 days.

3.What payment methods are accepted for SN74ABT16652DL?

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4.How is shipping managed for SN74ABT16652DL?

SN74ABT16652DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ABT16652DL 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 SN74ABT16652DL?

For technical support, including SN74ABT16652DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16652DL requirements.

6.How does Aetrix verify that SN74ABT16652DL is sourced from the original manufacturer or authorized distributors?

All SN74ABT16652DL 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 SN74ABT16652DL meets industry standards.

7.What is the process for return or replacement of SN74ABT16652DL?

All SN74ABT16652DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16652DL, 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 SN74ABT16652DL part is unused and in its original packaging.

Return procedure for SN74ABT16652DL:

1.Submit a request within 90 days.

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

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