My Inquiry
My Account
Texas Instruments SN74ABT652ANT
- Part No.:
- SN74ABT652ANT
- Manufacturer:
- Texas Instruments
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
SN74ABT652ANT.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,157
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74ABT652ANT 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, dual clock inputs (CLKAB/CLKBA), 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 industrial temperature range.
For engineers reviewing the SN74ABT652ANT datasheet, SN74ABT652ANT pinout, SN74ABT652ANT application, or SN74ABT652ANT equivalent, this device is critical for high-speed bus isolation, latch-controlled data routing, and glitch-free multiplexed bus arbitration in industrial control backplanes and legacy computing interconnects.
Technical Context
The SN74ABT652ANT implements a dual-bus registered transceiver architecture with independent A→B and B→A paths, each controlled by dedicated clock, select, and enable signals. Its EPIC-IIB BiCMOS process delivers high-drive capability (–32 mA IOH, 64 mA IOL) while minimizing ground bounce (VOLP < 1 V) and power dissipation.
It supports four fundamental bus-management functions: real-time bidirectional transfer, simultaneous storage of A/B bus data, selective storage (A-only or B-only), and stored-data bidirectional transfer - all without decoding glitches due to its synchronous select-control logic.
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 ABT logic systems. |
| Max Clock Frequency | 125 MHz - enables high-throughput data latching in real-time bus synchronization. |
| Output Drive | –32 mA IOH / 64 mA IOL - drives heavy capacitive loads and multiple TTL inputs without external buffers. |
| Propagation Delay | tPLH/tPHL ≤ 5.6 ns (CLK→B/A) - guarantees sub-6-ns timing margins in 125-MHz operation. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems and control equipment. |
| ESD Protection | >2000 V HBM - enhances robustness in handling and board-level assembly environments. |
| 3-State Enable Time | tPZH ≤ 6.5 ns (OEAB→B) - supports fast bus turnaround in time-critical arbitration protocols. |
Pinout & Package
SN74ABT652ANT uses a 24-pin plastic DIP (NT) package with 0.3-inch body width and through-hole mounting. Pin 1 is located at the top-left corner (notch side left), with pins numbered counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLKAB | Clock input for latching A-bus data into internal register; rising-edge triggered. |
| 2 | SAB | Select control for A→B path: low = real-time transfer, high = stored-data transfer. |
| 3 | OEAB | Output enable for A→B direction: low = enabled, high = 3-state (high-Z). |
| 4–11 | A1–A8 | 8-bit bidirectional data terminals for A bus; function as inputs when OEAB high, outputs when enabled. |
| 12 | GND | Power ground reference for all internal circuitry and I/O structures. |
| 13–20 | B1–B8 | 8-bit bidirectional data terminals for B bus; same I/O behavior as A1–A8 under OEBA control. |
| 21 | OEBA | Output enable for B→A direction: low = enabled, high = 3-state (high-Z). |
| 22 | SBA | Select control for B→A path: low = real-time transfer, high = stored-data transfer. |
| 23 | CLKBA | Clock input for latching B-bus data into internal register; rising-edge triggered. |
| 24 | VCC | +5 V supply rail; must be decoupled locally to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Glitch-free select control | Eliminates multiplexer transition glitches during real-time ↔ stored-data mode switching via synchronous logic. |
| High-drive 3-state outputs | –32 mA source / 64 mA sink capability maintains signal integrity across long traces and fan-out ≥10. |
| Dual independent clock domains | Separate CLKAB and CLKBA allow asynchronous latching of A and B bus data without cross-domain timing constraints. |
| Power-up/down 3-state safety | OEBA tied to VCC and OEAB tied to GND via pullup/pulldown resistors ensures defined high-Z state during supply ramp. |
| EPIC-IIB BiCMOS process | Reduces dynamic power vs. bipolar while retaining TTL-compatible voltage thresholds and drive strength. |
Applications
| Industrial Backplane Interconnect | Legacy System Bus Arbitration |
|---|---|
Use Scenario: Isolating and synchronizing data flow between CPU and peripheral modules on a 16-bit ISA-style backplane with mixed timing domains. IC Role / Device Role / Timing Role: Registered transceiver managing bidirectional 8-bit segments of the data bus, using CLKAB/CLKBA to align transfers with master and slave clocks. Use Value: Enables deterministic bus handoff with zero hold-time violations and eliminates metastability risk during module hot-swap transitions. | Use Scenario: Coordinating shared memory access between two microcontrollers in a dual-CPU industrial PLC rack. IC Role / Device Role / Timing Role: Dual-latch transceiver acting as a programmable bus switch - storing one controller's write data while forwarding another's read request. Use Value: Prevents bus contention during concurrent read/write cycles and supports atomic register updates via synchronized SAB/SBA control. |
| Test Equipment Data Capture | Programmable Logic Interface |
Use Scenario: Capturing parallel digital waveform data from a DUT into a FIFO buffer under precise trigger conditions. IC Role / Device Role / Timing Role: Latched transceiver capturing snapshot data from a 16-bit test bus onto internal registers before serial upload. Use Value: Provides setup/hold-compliant sampling at 125 MHz with no external latch required, reducing PCB area and timing complexity. | Use Scenario: Bridging a CPLD's I/O bank to a legacy 5-V parallel interface (e.g., printer port or ISA expansion). IC Role / Device Role / Timing Role: Level-shifting and registered bus interface translating between CPLD logic and external 5-V peripherals. Use Value: Absorbs timing skew between FPGA clock domain and asynchronous peripheral strobes using configurable SAB/SBA modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT245N | Non-registered, 8-bit unidirectional transceiver with identical drive strength and voltage specs; lacks internal registers and dual-clock support. | Suitable only for simple bus buffering without data storage or glitch-free mode switching. | Choose SN74ABT245N when real-time pass-through suffices and latch functionality is unnecessary. |
| SN74ACT652N | Same pinout and function but built in ACT (advanced CMOS) process; lower drive (–24 mA / 24 mA), higher speed (tPLH ≤ 4.5 ns), and wider VCC range (4.5–5.5 V). | Better for low-power, high-speed designs where reduced current consumption outweighs need for high sink drive. | Choose SN74ACT652N when system load requires lower IOL and timing budgets permit tighter propagation windows. |
Compared with SN74ABT245N and SN74ACT652N, the SN74ABT652ANT uniquely combines registered data storage, dual-clock control, and 64-mA sink drive in a single 24-pin DIP - making it irreplaceable for applications requiring deterministic bus arbitration with hardware-enforced timing isolation.
Availability
SN74ABT652ANT is available at Aetrix Electronics and suitable for industrial backplane interconnect, legacy system bus arbitration, and test equipment data capture requiring stable component supply and long-term obsolescence management.
Supply support for SN74ABT652ANT 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 over 90 years of innovation in industrial, automotive, and communications markets.
The SN74ABT652ANT belongs to TI's ABT logic family, engineered for high-speed, high-drive 5-V bus interfacing in mission-critical industrial and computing systems where reliability and timing precision are non-negotiable.
FAQ
What is the maximum clock frequency supported by the SN74ABT652ANT?
The SN74ABT652ANT supports a maximum clock frequency of 125 MHz under recommended operating conditions (VCC = 5 V, TA = 25°C). This rating is confirmed in the timing requirements table of the official datasheet and applies to both CLKAB and CLKBA inputs for reliable data latching without setup/hold violations.
Does the SN74ABT652ANT require external pull-up or pull-down resistors on its enable pins?
Yes - to ensure high-impedance outputs during power-up or power-down, OEBA must be tied to VCC via a pullup resistor and OEAB to GND via a pulldown resistor. The minimum resistor values depend on the driver's current-sinking (B→A) and current-sourcing (A→B) capabilities, as specified in the functional description section of the SN74ABT652ANT datasheet.
Can the SN74ABT652ANT operate with a 3.3-V supply?
No - the SN74ABT652ANT is strictly a 5-V device with a recommended supply range of 4.5 V to 5.5 V. Its input thresholds, output drive levels, and internal BiCMOS structure are optimized for TTL-compatible 5-V logic families; operation below 4.5 V violates recommended conditions and may cause undefined outputs or timing failures.
How does the SN74ABT652ANT prevent glitches during mode transitions between real-time and stored data?
The SN74ABT652ANT uses synchronous select-control logic that eliminates typical multiplexer glitches. When SAB or SBA transitions, the internal path selection occurs only on the next valid clock edge - ensuring no transient bus contention or metastable states. This behavior is explicitly documented in the functional description and Figure 1 of the SN74ABT652ANT datasheet.
What is the thermal resistance (θJA) of the SN74ABT652ANT in its NT package?
The SN74ABT652ANT in the 24-pin plastic DIP (NT) package has a junction-to-ambient thermal resistance (θJA) of 67°C/W, as specified in the Absolute Maximum Ratings table of the datasheet. This value assumes standard JEDEC test conditions and is critical for calculating maximum allowable power dissipation in thermally constrained industrial enclosures.
SN74ABT652ANT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 24-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- 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:
- Through Hole
- Supplier Device Package:
- 24-PDIP
SN74ABT652ANT FAQ
1.How can I place an order for SN74ABT652ANT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT652ANT 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 SN74ABT652ANT reliable?
The price and inventory of SN74ABT652ANT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT652ANT is usually 5 days.
3.What payment methods are accepted for SN74ABT652ANT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT652ANT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT652ANT?
SN74ABT652ANT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT652ANT 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 SN74ABT652ANT?
For technical support, including SN74ABT652ANT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT652ANT requirements.
6.How does Aetrix verify that SN74ABT652ANT is sourced from the original manufacturer or authorized distributors?
All SN74ABT652ANT 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 SN74ABT652ANT meets industry standards.
7.What is the process for return or replacement of SN74ABT652ANT?
All SN74ABT652ANT units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT652ANT, 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 SN74ABT652ANT part is unused and in its original packaging.
Return procedure for SN74ABT652ANT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74ABT652ANT Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
