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Texas Instruments SN74ABT652ADBLE
- Part No.:
- SN74ABT652ADBLE
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74ABT652ADBLE.pdf
- Description:
- REGISTERED BUS TRANSCEIVER
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Inventory:6,900
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Product details
Overview
SN74ABT652ADBLE from Texas Instruments is an octal registered transceiver with 3-state outputs, designed for bidirectional data bus management between two 8-bit buses (A and B). It integrates D-type flip-flops for data storage, dual clock inputs (CLKAB/CLKBA), dual select controls (SAB/SBA), and independent output enables (OEAB/OEBA), supporting real-time or stored data transfer at up to 125 MHz. It operates from 4.5 V to 5.5 V and is rated for –40°C to 85°C, commonly used in industrial backplane interfaces and programmable logic interconnects.
For engineers reviewing the SN74ABT652ADBLE datasheet, SN74ABT652ADBLE pinout, SN74ABT652ADBLE application, or SN74ABT652ADBLE equivalent, key selection criteria include its dual-register architecture, high-drive capability (–32 mA IOH / 64 mA IOL), low ground bounce (<1 V VOLP), latch-up immunity (>500 mA), and compatibility with 5-V TTL/CMOS systems requiring glitch-free bus multiplexing.
Technical Context
This device implements a dual-directional, register-controlled bus transceiver using EPIC-IIB BiCMOS technology to achieve low power dissipation while maintaining high-speed performance. Its internal architecture includes eight identical channels, each with independent A- and B-side D-flip-flops, enabling simultaneous or staggered storage of data from either bus under separate clock control.
The select-control logic eliminates decoding glitches during transitions between real-time and stored data modes; SAB/SBA inputs determine source selection (low = real-time, high = stored), while OEAB/OEBA independently enable A→B or B→A 3-state outputs. The design supports hold-and-reinforce operation when both OEs are active, preserving bus state without register intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures robust operation across industrial 5-V rail tolerances and noise margins. |
| Max Clock Frequency | 125 MHz - Supports high-throughput synchronous bus transfers in real-time mode. |
| Output Drive | –32 mA IOH / 64 mA IOL - Drives heavy capacitive loads and multiple TTL inputs without external buffers. |
| Propagation Delay | tPLH/tPHL ≤ 5.1 ns (CLK→B/A) - Enables sub-8 ns cycle times for tight timing-critical designs. |
| Operating Temperature | –40°C to +85°C - Qualified for extended industrial ambient conditions without derating. |
| ESD Protection | >2000 V HBM - Meets MIL-STD-883 Class 3015, reducing risk of handling damage in assembly. |
| Latch-Up Immunity | >500 mA per JEDEC JESD17 - Prevents destructive latch-up under transient overvoltage events. |
Pinout & Package
SN74ABT652ADBLE uses a 24-pin Shrink Small-Outline Package (SSOP, DB package), 5.3 mm × 7.2 mm body, 0.65 mm pitch, with gull-wing leads. Pin 1 is marked by a beveled corner or dot; pin numbering follows standard SSOP convention (counterclockwise from pin 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | CLKAB, SAB | Active-high clock and select for A→B data path; SAB = L enables real-time A-to-B transfer. |
| 3, 23 | OEAB, OEBA | Active-low output enables; OEAB = L enables A→B outputs, OEBA = L enables B→A outputs. |
| 4–11 | A1–A8 | 8-bit A-side bidirectional I/O; function as inputs (store) or outputs (drive) depending on OEAB/SAB state. |
| 13–20 | B1–B8 | 8-bit B-side bidirectional I/O; function as inputs (store) or outputs (drive) depending on OEBA/SBA state. |
| 12, 21 | GND, VCC | Power supply pins - require local 0.1 µF ceramic decoupling adjacent to pin 12 (GND) and pin 21 (VCC). |
| 22, 24 | SBA, CLKBA | Active-high select and clock for B→A data path; SBA = L enables real-time B-to-A transfer. |
| NC (pins 14, 15) | No Connect | Internally unconnected; must remain floating or tied to GND/VCC only if required for mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent register banks | Separate CLKAB/SAB and CLKBA/SBA controls allow asynchronous storage and retrieval on A and B buses - critical for pipeline staging in bus arbitration. |
| Glitch-free select transition | Hardware-decoded SAB/SBA logic prevents metastability or spurious output during mode switching - eliminates need for external synchronization logic. |
| High-impedance power-up safety | OEBA tied to VCC via pullup and OEAB tied to GND via pulldown ensures 3-state outputs at power-on - prevents bus contention during system boot. |
| BiCMOS EPIC-IIB process | Combines bipolar speed and CMOS density to achieve 125 MHz operation with <1 V ground bounce - enables clean signal integrity in dense PCB layouts. |
| Robust bus-hold capability | When both OEs are active and all other drivers are high-Z, outputs reinforce inputs - maintains last valid bus state without external latches or pull-ups. |
Applications
| Industrial Backplane Interface | Programmable Logic Interconnect |
|---|---|
|
Use Scenario: Bidirectional data exchange between FPGA-based control module and microcontroller subsystem across a shared 8-bit parallel bus. IC Role / Device Role / Timing Role: Registered transceiver managing time-aligned data handshaking with clock-domain isolation and glitch-free mode switching. Use Value: Eliminates external glue logic for bus arbitration; supports 125 MHz transfers while maintaining signal integrity under 50-pF load. |
Use Scenario: Interfacing multiple CPLD I/O banks to a central configuration memory or status register bank. IC Role / Device Role / Timing Role: Octal registered buffer providing synchronized read/write access to shared registers with independent A/B clock domains. Use Value: Enables concurrent register updates and status reads without bus contention; leverages built-in storage to decouple timing between logic blocks. |
| Legacy System Bus Extension | Test Equipment Data Path |
|
Use Scenario: Extending ISA or similar 8-bit legacy bus to add modular peripheral cards with local storage and buffering. IC Role / Device Role / Timing Role: Bus transceiver with internal D-flip-flops acting as interface latch and direction controller for plug-in modules. Use Value: Provides level-shifted, drive-enhanced, and timing-controlled connection - replaces discrete latches and buffers in space-constrained slots. |
Use Scenario: High-speed digital pattern generator channel interfacing to DUT with precise edge-aligned stimulus delivery. IC Role / Device Role / Timing Role: Registered driver delivering deterministic, low-jitter data bursts synchronized to test clock edges. Use Value: Achieves <5.1 ns propagation delay and <1 V ground bounce - preserves waveform fidelity for sub-10 ns timing windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT652ADBRE4 | Same DB package, RoHS-compliant green finish, identical electrical specs and pinout. | Direct replacement for new production; same thermal profile (θJA = 104°C/W) and timing behavior. | Select for volume manufacturing where RoHS compliance and traceable sourcing are required. |
| SN74ABT652ADWR | SOIC-DW package (300-mil width), 25-pin tape-and-reel; otherwise identical functionality and specs. | Preferred for through-hole prototyping or legacy board rework where SSOP footprint is unavailable. | Choose when board layout constraints or assembly process favor SOIC over SSOP. |
Compared with SN74ABT652ADBLE, SN74ABT652ADBRE4 offers identical performance with updated environmental compliance, while SN74ABT652ADWR provides mechanical interchangeability in SOIC form - neither requires PCB redesign, but only SN74ABT652ADBRE4 matches the original DB-package footprint and lead finish.
Availability
SN74ABT652ADBLE is available at Aetrix Electronics and suitable for industrial backplane interfaces, programmable logic interconnects, and legacy system bus extension requiring stable component supply and long-term obsolescence mitigation.
Supply support for SN74ABT652ADBLE 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 ICs.
The SN74ABT652A family was developed to address high-speed, low-glitch bus management needs in industrial and computing systems - emphasizing robustness, timing precision, and seamless integration with TTL/CMOS logic families.
FAQ
What is the operating temperature range for SN74ABT652ADBLE?
SN74ABT652ADBLE is specified for operation from –40°C to +85°C, meeting industrial-grade environmental requirements. This range is validated per the SN74ABT652A datasheet revision May 1997 and confirmed in TI's packaging addendum. The device does not support extended military temperature ranges like the SN54ABT652A variant.
Is SN74ABT652ADBLE still in active production?
No - SN74ABT652ADBLE is marked as OBSOLETE in TI's official packaging addendum (dated 25-Oct-2016). While Aetrix Electronics maintains legacy inventory, new designs should consider active alternatives such as SN74ABT652ADBRE4 or SN74ABT652ADWR, which share identical functionality and are fully supported.
What package type does SN74ABT652ADBLE use?
SN74ABT652ADBLE uses a 24-pin Shrink Small-Outline Package (SSOP) with DB package drawing, measuring 5.3 mm × 7.2 mm with 0.65 mm lead pitch. Mechanical dimensions and land pattern match JEDEC MO-150 standards, and the device is compatible with standard SSOP reflow profiles.
How does the select-control logic prevent glitches in SN74ABT652ADBLE?
SN74ABT652ADBLE implements dedicated hardware decoding for SAB and SBA inputs that eliminates race conditions during transitions between real-time and stored data modes. As confirmed in the functional table and description, this logic ensures no intermediate invalid states occur - unlike software-configured multiplexers - making it suitable for deterministic bus arbitration without external synchronizers.
Can SN74ABT652ADBLE drive standard TTL loads directly?
Yes - SN74ABT652ADBLE delivers –32 mA IOH and 64 mA IOL, exceeding standard TTL fan-out requirements (–0.4 mA / 1.6 mA). Its high-drive outputs can directly interface with multiple 74LS or 74ALS inputs without external buffers, and its 5-V supply compatibility ensures full logic-level interoperability across legacy and modern 5-V systems.
SN74ABT652ADBLE 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:
- -
SN74ABT652ADBLE FAQ
1.How can I place an order for SN74ABT652ADBLE through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT652ADBLE 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 SN74ABT652ADBLE reliable?
The price and inventory of SN74ABT652ADBLE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT652ADBLE is usually 5 days.
3.What payment methods are accepted for SN74ABT652ADBLE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT652ADBLE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT652ADBLE?
SN74ABT652ADBLE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT652ADBLE 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 SN74ABT652ADBLE?
For technical support, including SN74ABT652ADBLE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT652ADBLE requirements.
6.How does Aetrix verify that SN74ABT652ADBLE is sourced from the original manufacturer or authorized distributors?
All SN74ABT652ADBLE 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 SN74ABT652ADBLE meets industry standards.
7.What is the process for return or replacement of SN74ABT652ADBLE?
All SN74ABT652ADBLE units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT652ADBLE, 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 SN74ABT652ADBLE part is unused and in its original packaging.
Return procedure for SN74ABT652ADBLE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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