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Texas Instruments SN74ABT162245DLG4
- Part No.:
- SN74ABT162245DLG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT162245DLG4.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,574
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Product details
Overview
SN74ABT162245DLG4 from Texas Instruments is a 16-bit noninverting 3-state transceiver in SSOP-48 package, supporting bidirectional data flow between A and B buses with direction control (DIR) and output enable (OE). It delivers 12 mA A-port drive, 64 mA B-port sink capability, 25-Ω integrated series termination, and operates across −40°C to 85°C at 4.5–5.5 V supply.
For engineers reviewing the SN74ABT162245DLG4 datasheet, SN74ABT162245DLG4 pinout, SN74ABT162245DLG4 application, or SN74ABT162245DLG4 equivalent, this device is selected for high-speed bus isolation in industrial backplanes, memory expansion interfaces, and synchronous data bridging where ground bounce <1 V and Ioff partial-power-down support are critical.
Technical Context
The SN74ABT162245DLG4 implements dual 8-bit transceiver sections with independent DIR/OE controls per section, enabling flexible 8-bit or 16-bit operation. Its flow-through pinout minimizes trace crossovers, while distributed VCC/GND pins reduce simultaneous switching noise.
It features Ioff circuitry that disables outputs during power-down to prevent current backflow, and A-port outputs integrate 25-Ω series resistors to suppress overshoot/undershoot without external components - confirmed at VCC = 5 V, TA = 25°C.
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. |
| A-Port Output Drive | ±12 mA - sufficient to directly drive 50-Ω transmission lines or multiple TTL loads without buffering. |
| B-Port Sink Current | 64 mA max - supports heavy capacitive bus loading and fast edge rates in high-density backplane designs. |
| Propagation Delay | 1 ns to 4.9 ns (A→B), 1.5 ns to 5.1 ns (B→A) - enables ≤100 MHz synchronous bus operation with timing margin. |
| Output Ground Bounce (VOLP) | <1 V at VCC = 5 V - reduces signal integrity risk in multi-bit parallel interfaces with simultaneous switching. |
| Ioff Current | ±100 µA at VCC = 0 - guarantees safe hot-insertion and partial-power-down isolation in modular systems. |
| ESD Protection | 2000-V HBM, 200-V MM - meets industrial-grade robustness requirements without external protection diodes. |
Pinout & Package
SN74ABT162245DLG4 uses a 48-pin SSOP (Shrink Small-Outline Package) with 0.5-mm pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm max height - optimized for high-density PCB layouts with thermal resistance θJA = 63°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Low = B→A data transfer; High = A→B data transfer - enables independent bidirectional control of two 8-bit lanes. |
| 1OE, 2OE | Output enable input (per 8-bit section) | Low = outputs active; High = all A/B ports enter high-impedance state - provides granular bus isolation. |
| 1A1–1A8, 2A1–2A8 | A-side data I/O terminals | Noninverting transceiver inputs/outputs with 25-Ω series resistance - eliminate need for external termination on A-bus traces. |
| 1B1–1B8, 2B1–2B8 | B-side data I/O terminals | Noninverting transceiver inputs/outputs rated for 64 mA sink - suitable for driving stubbed or branched B-bus topologies. |
| VCC (Pins 7, 20, 33, 46) | Power supply | Distributed VCC pins minimize IR drop and supply noise coupling across 16-bit data path. |
| GND (Pins 4, 11, 24, 31, 37, 44) | Ground reference | Six GND pins provide low-inductance return paths - critical for suppressing ground bounce (VOLP <1 V). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω series termination | Eliminates external resistors on A-port outputs, reducing BOM count and PCB area while controlling edge ringing. |
| Ioff partial-power-down support | Prevents damaging back-current when VCC = 0, enabling safe insertion into live backplanes or hot-swap modules. |
| Flow-through architecture | Input and output pins aligned on opposite sides - simplifies layer routing and avoids vias in high-speed data lanes. |
| Distributed VCC/GND pinning | Four VCC and six GND pins placed across package - lowers simultaneous switching noise and improves signal integrity. |
| Latch-up immunity >500 mA | Exceeds JESD17 requirement - ensures robust operation under transient overvoltage or ESD stress conditions. |
Applications
| Industrial Backplane Interface | Memory Expansion Bridge |
|---|---|
|
Use Scenario: Isolating CPU local bus from extended I/O backplane in programmable logic controllers (PLCs) with hot-swap capability. IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver managing 16-bit address/data multiplexing between processor and peripheral slots. Use Value: Ioff support enables safe insertion/removal of modules while main system remains powered; 64 mA B-port sink drives long backplane traces. |
Use Scenario: Extending SRAM or Flash memory capacity in embedded controllers via parallel bus expansion. IC Role / Device Role / Timing Role: Synchronous 16-bit data path buffer with DIR-controlled read/write direction and OE-gated chip select. Use Value: Sub-5 ns propagation delay preserves setup/hold timing margins; integrated 25-Ω resistors suppress reflections on memory address strobes. |
| Test Equipment Data Bus | Automated Test Fixture Interface |
|
Use Scenario: Interfacing FPGA-based pattern generators to DUT boards with mismatched voltage domains and timing skew. IC Role / Device Role / Timing Role: Re-timing and isolating 16-bit parallel test vectors between controller and device-under-test. Use Value: Low VOLP (<1 V) prevents false triggering on sensitive analog measurement circuits sharing same ground plane. |
Use Scenario: Connecting microcontroller-based fixture controllers to multi-point sensor arrays requiring synchronized sampling. IC Role / Device Role / Timing Role: Enabling/disabling sensor data lanes via OE while maintaining DIR-controlled read direction for diagnostics. Use Value: Dual-section architecture allows independent control of two 8-bit sensor groups - reducing firmware complexity vs. discrete buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245DGGR | 3.3-V only (1.65–3.6 V), lower drive (24 mA B-port), no integrated 25-Ω resistors | Suitable for low-power, mixed-voltage 3.3-V systems but requires external termination and cannot replace SN74ABT162245DLG4 in 5-V legacy designs. | Select when migrating to 3.3-V infrastructure and board space permits external resistors. |
| SN74ABT16245DLR | Same ABT family, identical electrical specs, but in tape-and-reel packaging (1000 pcs) vs. tube (25 pcs) | No functional difference - used interchangeably where procurement volume or assembly line feed method dictates packaging format. | Choose SN74ABT162245DLR for SMT production runs; SN74ABT162245DLG4 remains optimal for prototyping and low-volume validation. |
Compared with SN74LVC162245DGGR, SN74ABT162245DLG4 delivers higher noise immunity and native 5-V compatibility; versus SN74ABT16245DLR, it offers identical performance in tube packaging for engineering evaluation and small-batch builds.
Availability
SN74ABT162245DLG4 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion bridges, and automated test fixture interfaces requiring stable component supply and long-term obsolescence management.
Supply support for SN74ABT162245DLG4 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 SN74ABT162245DLG4 belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for noise-immune, high-speed parallel data transfer in industrial automation and telecom infrastructure.
FAQ
What is the maximum operating temperature range for SN74ABT162245DLG4?
The SN74ABT162245DLG4 is specified for operation from −40°C to +85°C ambient temperature. This industrial-grade range is validated per the recommended operating conditions table in the SCBS239F datasheet and applies to the DL-package variant. Operation outside this range may result in parametric degradation or functional failure.
Does SN74ABT162245DLG4 support hot-swap or partial-power-down operation?
Yes, SN74ABT162245DLG4 includes Ioff circuitry that actively disables outputs when VCC = 0 V, limiting reverse current to ±100 µA. This feature enables safe insertion into live backplanes and supports partial-power-down modes in modular systems - a key design requirement confirmed in the absolute maximum ratings and functional description sections.
What is the purpose of the 25-Ω series resistors on the A-port outputs of SN74ABT162245DLG4?
The 25-Ω series resistors integrated into SN74ABT162245DLG4's A-port outputs dampen signal reflections and reduce overshoot/undershoot on PCB traces, eliminating the need for external termination resistors. This is explicitly stated in the device description and verified by typical VOLP <1 V measurements at VCC = 5 V and TA = 25°C.
Can SN74ABT162245DLG4 be used as two independent 8-bit transceivers?
Yes, SN74ABT162245DLG4 contains two functionally independent 8-bit sections (1A/1B and 2A/2B), each with dedicated DIR and OE inputs. The datasheet's function table and logic diagram confirm separate control per section, allowing concurrent bidirectional operation - e.g., 1A↔1B and 2A↔2B - without interference.
What is the thermal resistance (θJA) of SN74ABT162245DLG4 in its SSOP package?
The SN74ABT162245DLG4 in the DL (SSOP-48) package has a junction-to-ambient thermal resistance (θJA) of 63°C/W, as specified in the absolute maximum ratings table. This value assumes standard JEDEC test board conditions and is critical for calculating junction temperature rise under load in thermally constrained industrial enclosures.
SN74ABT162245DLG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- 12mA, 12mA; 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74ABT162245DLG4 FAQ
1.How can I place an order for SN74ABT162245DLG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT162245DLG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of SN74ABT162245DLG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT162245DLG4 is usually 5 days.
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5.How can I obtain technical support or documentation for SN74ABT162245DLG4?
For technical support, including SN74ABT162245DLG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT162245DLG4 requirements.
6.How does Aetrix verify that SN74ABT162245DLG4 is sourced from the original manufacturer or authorized distributors?
All SN74ABT162245DLG4 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 SN74ABT162245DLG4 meets industry standards.
7.What is the process for return or replacement of SN74ABT162245DLG4?
All SN74ABT162245DLG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT162245DLG4, 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 SN74ABT162245DLG4 part is unused and in its original packaging.
Return procedure for SN74ABT162245DLG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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