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NXP Semiconductors 74ABT652AD,112
- Part No.:
- 74ABT652AD,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74ABT652AD,112.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 24SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,430
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Product details
Overview
74ABT652AD,112 from NXP Semiconductors is an octal non-inverting bus transceiver/register with 3-state outputs, dual independent clocking (CPAB/CPBA), and bidirectional bus management via OEAB/OEBA and SAB/SBA controls. It operates from 4.5 V to 5.5 V, delivers ±32 mA/±64 mA output drive, and supports real-time or registered data transfer between A and B buses in industrial temperature range (−40 °C to +85 °C).
For engineers reviewing the 74ABT652AD,112 datasheet, 74ABT652AD,112 pinout, 74ABT652AD,112 application, or 74ABT652AD,112 equivalent, this device serves as a high-speed, latch-enabled bidirectional interface for memory expansion, microprocessor bus buffering, and FPGA I/O bridging where simultaneous A↔B register storage and real-time pass-through are required.
Technical Context
The 74ABT652AD,112 implements two independent 8-bit D-type flip-flop registers-one per bus-with separate clock inputs (CPAB for A→B, CPBA for B→A) and select (SAB/SBA) and output-enable (OEAB/OEBA) controls that determine data path mode: real-time transfer, stored-data transfer, or isolation. Its BiCMOS architecture enables low propagation delay (tPLH/tPHL ≤ 5.6 ns at 5 V) while maintaining TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V).
It features power-up 3-state and power-up reset behavior, live insertion/extraction support, and robust ESD protection (HBM > 2000 V, MM > 200 V). Latch-up immunity exceeds 500 mA per JESD78B Class II Level A, and it meets recommended operating conditions across −40 °C to +85 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Octal non-inverting transceiver/register with dual independent registers and 3-state outputs |
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL and mixed-voltage system rails |
| Output Drive | +64 mA sink / −32 mA source - drives heavy capacitive loads and multiple TTL inputs without external buffers |
| Propagation Delay | ≤ 5.6 ns (tPLH/tPHL, A↔B bus) - enables operation up to 125 MHz maximum clock frequency |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded control and communications equipment |
| ESD Protection | HBM > 2000 V, MM > 200 V - reduces risk of handling damage during assembly and field service |
| Input Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V - guarantees reliable logic-level recognition across process/voltage/temperature corners |
Pinout & Package
74ABT652AD,112 is housed in a plastic small outline package (SO24) with 24 leads and 7.5 mm body width (SOT137-1), optimized for surface-mount reflow assembly and board space efficiency in dense digital interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CPAB | A-to-B clock input | Triggers latching of A-bus data into internal register on LOW-to-HIGH transition for B-bus output |
| 2 SAB | A-to-B select input | Enables stored-data transfer from A register to B bus when HIGH; disables real-time path |
| 3 OEAB | A-to-B output enable (active LOW) | Controls 3-state output drivers on B-bus pins; LOW enables A→B data flow |
| 4–11 A0–A7 | A-side bidirectional I/O | Connects to A-bus; functions as input (register load) or output (registered or real-time data) |
| 12 GND | Ground reference | Primary 0 V return for logic and output current paths; must be low-impedance |
| 13–20 B0–B7 | B-side bidirectional I/O | Connects to B-bus; functions as input (register load) or output (registered or real-time data) |
| 21 OEBA | B-to-A output enable (active LOW) | Controls 3-state output drivers on A-bus pins; LOW enables B→A data flow |
| 22 SBA | B-to-A select input | Enables stored-data transfer from B register to A bus when HIGH; disables real-time path |
| 23 CPBA | B-to-A clock input | Triggers latching of B-bus data into internal register on LOW-to-HIGH transition for A-bus output |
| 24 VCC | Positive supply voltage | 5 V nominal rail; decoupling capacitor required within 10 mm of pin for noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| Independent A/B registers | Enables concurrent storage of data from both buses-critical for handshake-free dual-bus arbitration |
| Multiplexed real-time & stored data | Allows dynamic switching between direct pass-through and registered transfer without external logic |
| Power-up 3-state & reset | Prevents bus contention at power-on; eliminates need for external reset sequencing circuitry |
| Live insertion/extraction support | Permits hot-swap replacement in backplane or modular systems without system shutdown |
| High-output drive (+64 mA/−32 mA) | Drives 20+ TTL loads or long PCB traces directly-reduces component count in legacy bus designs |
Applications
| Memory Expansion Interface | Microprocessor Bus Buffer |
|---|---|
Use Scenario: Expanding address/data bus between a microcontroller and external SRAM or EPROM. IC Role / Device Role / Timing Role: Bidirectional transceiver registering address latches and buffering data lines with direction-controlled 3-state outputs. Use Value: Eliminates need for separate address latches and data bus transceivers-reduces BOM count and layout area by consolidating two functions in one SO24 package. |
Use Scenario: Isolating and driving a shared data bus between CPU, DMA controller, and peripheral ICs. IC Role / Device Role / Timing Role: Directionally controlled buffer with register hold capability to synchronize burst transfers and prevent bus collisions. Use Value: Enables deterministic timing for multi-master arbitration using CPAB/CPBA clocks-avoids metastability in asynchronous handshaking schemes. |
| FPGA I/O Bridging | Industrial PLC Backplane Interface |
Use Scenario: Interfacing FPGA I/O banks with legacy 5 V parallel peripherals (e.g., ADCs, DACs, displays). IC Role / Device Role / Timing Role: Level-shifting transceiver with register staging to match FPGA clock domains and manage setup/hold timing margins. Use Value: Provides programmable delay compensation via register clock edges-simplifies timing closure versus pure combinational buffers. |
Use Scenario: Connecting modular I/O cards to a central controller backplane in programmable logic controllers. IC Role / Device Role / Timing Role: Hot-pluggable bus repeater with independent A/B storage for fault-tolerant status mirroring and command queuing. Use Value: Supports live card replacement via power-up 3-state and live insertion-ensures uninterrupted operation during maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver/register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ABT652ADB,118 | SSOP24 package (5.3 mm width); identical electrical specs and pinout | Higher board density; requires tighter solder mask and reflow profile vs. SO24 | Select when PCB space is constrained and SSOP assembly capability exists |
| 74ABT652APW,118 | TSSOP24 package (4.4 mm width); same logic function and timing | Ultra-compact footprint; higher thermal resistance and lower moisture sensitivity than SO24 | Choose for portable or space-critical industrial modules where TSSOP reflow is validated |
Compared with 74ABT652ADB,118 and 74ABT652APW,118, the 74ABT652AD,112 offers the largest package footprint and lowest thermal resistance among the family-making it preferred for high-reliability industrial applications where mechanical robustness and thermal margin outweigh miniaturization needs.
Availability
74ABT652AD,112 is available at Aetrix Electronics and suitable for memory expansion interfaces, microprocessor bus buffering, FPGA I/O bridging, and industrial PLC backplane interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74ABT652AD,112 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74ABT652A series was designed for high-speed, low-power bidirectional bus interfacing in industrial control and legacy system upgrades-emphasizing robustness, latch-enabled timing control, and seamless integration with 5 V TTL logic families.
FAQ
What is the maximum clock frequency supported by the 74ABT652AD,112?
The 74ABT652AD,112 supports a maximum clock frequency of 125 MHz under recommended operating conditions (VCC = 5.0 V ± 0.5 V, −40 °C to +85 °C). This value is derived from its worst-case propagation delay (tPLH/tPHL ≤ 5.6 ns) and minimum pulse width (tWH/tWL ≥ 4.0 ns), ensuring reliable register sampling across temperature and voltage extremes. The 74ABT652AD,112 does not guarantee operation above 125 MHz in industrial environments.
Does the 74ABT652AD,112 support live insertion and hot-swap operation?
Yes, the 74ABT652AD,112 explicitly supports live insertion and extraction per its datasheet features list. Its power-up 3-state behavior ensures all outputs remain high-impedance until VCC stabilizes, preventing bus contention during hot-plug events. This capability is validated per JEDEC standards and is integral to its use in modular backplanes and field-replaceable units. The 74ABT652AD,112 requires no external circuitry to achieve this functionality.
What are the absolute maximum ratings for supply voltage and junction temperature of the 74ABT652AD,112?
The 74ABT652AD,112 has an absolute maximum supply voltage (VCC) of −0.5 V to +7.0 V and a maximum junction temperature (Tj) of 150 °C. Exceeding either rating-even momentarily-may cause permanent damage per IEC 60134 limiting values. These are stress ratings only; continuous operation must remain within recommended conditions: VCC = 4.5 V to 5.5 V and ambient temperature −40 °C to +85 °C. The 74ABT652AD,112 thermal design must ensure junction temperature stays below 150 °C under worst-case power dissipation.
How does the 74ABT652AD,112 handle simultaneous clocking on CPAB and CPBA inputs?
The 74ABT652AD,112 allows simultaneous LOW-to-HIGH transitions on CPAB and CPBA only when both SAB and SBA are LOW-enabling concurrent loading of A and B bus data into their respective registers. If either SAB or SBA is HIGH, clocks must be staggered to avoid undefined behavior, as stated in the functional description. This dual-clock flexibility makes the 74ABT652AD,112 suitable for asymmetric bus protocols where A and B sides operate on independent timing domains.
What is the output current capability of the 74ABT652AD,112 in HIGH and LOW states?
The 74ABT652AD,112 delivers −32 mA (source) in HIGH state and +64 mA (sink) in LOW state per output, measured at VCC = 4.5 V with VOH ≥ 2.0 V and VOL ≤ 0.55 V. These values are specified under worst-case industrial temperature conditions and reflect guaranteed drive strength-not typical values. The 74ABT652AD,112 maintains these ratings across its full operating range, enabling direct drive of multiple TTL loads or moderate-capacitance traces without external buffers.
74ABT652AD,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 24-SO
74ABT652AD,112 FAQ
1.How can I place an order for 74ABT652AD,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT652AD,112 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 74ABT652AD,112 reliable?
The price and inventory of 74ABT652AD,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT652AD,112 is usually 5 days.
3.What payment methods are accepted for 74ABT652AD,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT652AD,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT652AD,112?
74ABT652AD,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT652AD,112 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 74ABT652AD,112?
For technical support, including 74ABT652AD,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT652AD,112 requirements.
6.How does Aetrix verify that 74ABT652AD,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT652AD,112 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 74ABT652AD,112 meets industry standards.
7.What is the process for return or replacement of 74ABT652AD,112?
All 74ABT652AD,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT652AD,112, 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 74ABT652AD,112 part is unused and in its original packaging.
Return procedure for 74ABT652AD,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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