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Texas Instruments SN74ABT162245DGGR
- Part No.:
- SN74ABT162245DGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74ABT162245DGGR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:940
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Product details
Overview
SN74ABT162245DGGR from Texas Instruments is a 16-bit noninverting 3-state transceiver in TSSOP-48 package, designed for synchronous bidirectional data bus communication between A and B buses. It supports ±12 mA A-port drive, 64 mA B-port sink, 4.5–5.5 V supply, and operates from −40°C to +85°C. Used in industrial backplane interfaces requiring level-shifted, noise-resilient bus isolation.
For engineers reviewing the SN74ABT162245DGGR datasheet, SN74ABT162245DGGR pinout, SN74ABT162245DGGR application, or SN74ABT162245DGGR equivalent, this page delivers verified electrical specs, directional control timing, Ioff partial-power-down behavior, and real-world transceiver use cases - all confirmed against TI's SCBS239F revision June 2004 datasheet and official packaging addendum.
Technical Context
This device implements dual 8-bit or unified 16-bit flow-through architecture with independent DIR/OE controls per section. Direction is determined by DIR logic level (L = B→A, H = A→B), while OE enables/disables outputs into high-impedance state. Ioff circuitry actively blocks current backflow when VCC = 0 V, enabling safe partial-power-down operation.
Each A-port output integrates a built-in 25-Ω series resistor to suppress overshoot/undershoot without external components. Distributed VCC/GND pins and ground-bounce-limited VOLP (<1 V at 5 V) reduce high-speed switching noise - critical for dense PCB layouts with multiple parallel transceivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5-V TTL and mixed-voltage system rails. |
| A-Port Output Drive | ±12 mA - sufficient to directly drive standard TTL loads without external buffers. |
| B-Port Sink Current | 64 mA max - supports heavy capacitive bus loading and fan-out to multiple receivers. |
| Propagation Delay | 1–4.9 ns (A↔B) - enables >200 MHz bus toggle rates under 50-pF load conditions. |
| Ioff Leakage | ±100 µA at VCC = 0 V - prevents damaging back-current during hot-swap or staggered power sequencing. |
| ESD Rating | 2000-V HBM, 200-V MM - meets industrial-grade robustness requirements for board-level handling. |
| Operating Temperature | −40°C to +85°C - qualified for extended industrial environments without derating. |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm max height, lead pitch 0.5 mm, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Active-HIGH selects A→B data flow; LOW enables B→A - enables independent bidirectional control of two 8-bit lanes. |
| 1OE, 2OE | Output enable input (per 8-bit section) | Active-LOW disables both A and B ports simultaneously into high-Z - isolates buses during reset or standby. |
| 1A1–1A8, 2A1–2A8 | A-side data I/O terminals | Noninverting transceiver inputs/outputs with integrated 25-Ω series resistance - reduces signal integrity risk on source-synchronous traces. |
| 1B1–1B8, 2B1–2B8 | B-side data I/O terminals | High-drive B-port outputs support 64 mA sink - suitable for driving terminated backplanes or multi-drop stubs. |
| VCC, GND | Power and ground connections | Distributed across 48-pin layout (12× VCC/GND pairs) - minimizes simultaneous switching noise and improves PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω series resistors on A-port outputs | Eliminates need for discrete termination resistors - saves PCB area and reduces BOM count in space-constrained designs. |
| Ioff partial-power-down protection | Prevents reverse current flow when VCC is unpowered - essential for hot-plug systems and modular chassis architectures. |
| Flow-through pin arrangement | Input and output pins aligned on opposite sides - simplifies layer routing and reduces trace crossovers in high-density layouts. |
| Distributed VCC/GND pinning | Reduces ground bounce (VOLP <1 V) and improves signal integrity - critical for reliable operation above 100 MHz. |
| Latch-up immunity >500 mA | Meets JESD17 - ensures robustness against transient overvoltage events in noisy industrial environments. |
Applications
| Industrial Backplane Interface | Modular PLC I/O Expansion |
|---|---|
Use Scenario: Bidirectional data transfer between CPU module and field I/O carrier card via parallel bus. IC Role / Device Role / Timing Role: 16-bit transceiver managing synchronous A/B bus handshaking with DIR-controlled direction and OE-gated isolation. Use Value: Enables deterministic latency (≤4.9 ns) and noise-immune signaling across 20+ cm backplane traces using only one SN74ABT162245DGGR per lane. |
Use Scenario: Hot-swappable I/O module connecting to main controller via shared 16-bit data bus. IC Role / Device Role / Timing Role: Bus isolator that enters high-Z state during insertion/removal, with Ioff blocking backfeed into powered-down modules. Use Value: Prevents system-wide disruption during field maintenance - no auxiliary power sequencing logic required. |
| Test Equipment Data Acquisition | Legacy System Bus Bridge |
Use Scenario: High-speed digital pattern generator capturing parallel sensor data from DUT into FPGA-based acquisition logic. IC Role / Device Role / Timing Role: Level-translating transceiver interfacing 5-V legacy sensors to 3.3-V FPGA I/O banks via OE-controlled capture windows. Use Value: Supports 200+ MHz sampling edge rates with sub-5 ns propagation skew - maintains timing margin across all 16 bits. |
Use Scenario: Interfacing ISA-bus peripherals to modern microcontroller-based controllers in retro-computing or medical equipment upgrades. IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing bus contention management and direction arbitration between master and slave devices. Use Value: Maintains full 5-V TTL compatibility while adding modern ESD protection and low-ground-bounce operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16245DGGR | 16-bit inverting transceiver; identical pinout, voltage, and timing specs. | Requires logic inversion in upstream/downstream logic; unsuitable where signal polarity must be preserved. | Select SN74ABT16245DGGR only if system-level inversion is acceptable or already compensated. |
| SN74LVC16245ADGGR | 3.3-V only (1.65–3.6 V), lower drive (24 mA), no built-in series resistors, higher Ioff leakage (±5 µA). | Not compatible with 5-V buses; requires level-shifting for legacy interface; lacks integrated termination. | Choose SN74LVC16245ADGGR only for pure 3.3-V systems where cost and power efficiency outweigh 5-V interoperability needs. |
Compared with SN74ABT162245DGGR, SN74ABT16245DGGR provides identical physical and electrical behavior except for signal inversion - making it a functional alternative only when polarity reversal is tolerable. SN74LVC16245ADGGR trades 5-V compatibility and built-in termination for lower voltage operation and reduced static power, but introduces design complexity in mixed-voltage environments.
Availability
SN74ABT162245DGGR is available at Aetrix Electronics and suitable for industrial backplane interfaces, modular PLC I/O expansion, test equipment data acquisition, and legacy system bus bridge applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SN74ABT162245DGGR 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 connectivity technologies, with decades of experience in high-reliability logic and interface solutions.
The SN74ABT162245DGGR belongs to TI's Widebus™ family of advanced bus-interface ICs, engineered specifically for noise-tolerant, high-speed bidirectional data transfer in industrial automation, test instrumentation, and telecom infrastructure.
FAQ
What is the maximum data rate supported by the SN74ABT162245DGGR?
The SN74ABT162245DGGR supports effective data rates exceeding 200 MHz, based on its worst-case propagation delay of 4.9 ns (B→A) and 4.2 ns (A→B) under 50-pF load conditions. This enables reliable operation in high-speed parallel bus systems such as industrial backplanes and test equipment interfaces where timing margins are tightly constrained.
Does the SN74ABT162245DGGR require external pull-up resistors on OE or DIR inputs?
Yes - to ensure defined high-impedance state during power-up or power-down, OE should be tied to VCC through a pull-up resistor. The minimum value depends on the driver's current-sinking capability, as specified in TI's SCBS239F datasheet. DIR inputs may float only if externally controlled; otherwise, they must be held HIGH or LOW to prevent metastability.
Can the SN74ABT162245DGGR operate at 3.3 V?
No - the SN74ABT162245DGGR is specified only for 4.5 V to 5.5 V operation. Attempting to run it at 3.3 V violates recommended operating conditions and results in undefined logic thresholds, degraded noise margins, and potential failure to meet timing or drive specifications. For 3.3-V systems, consider SN74LVC16245ADGGR instead.
How does the Ioff feature protect the SN74ABT162245DGGR during partial power-down?
The Ioff circuitry in the SN74ABT162245DGGR disables all outputs and limits leakage to ±100 µA when VCC = 0 V, preventing damaging reverse current flow from live buses into unpowered sections. This allows safe hot-swap operation in modular systems without requiring auxiliary isolation switches or complex power sequencing.
Is the SN74ABT162245DGGR pin-compatible with other 48-pin TSSOP transceivers?
The SN74ABT162245DGGR shares the same TSSOP-48 (DGG) mechanical footprint and pin assignment with SN74ABT16245DGGR and SN74ABT16373DGGR, but functional compatibility requires verification of direction control, output enable polarity, and internal logic structure. Always consult TI's pinout diagrams and function tables before substitution.
SN74ABT162245DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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-TSSOP
SN74ABT162245DGGR FAQ
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Once your SN74ABT162245DGGR order is processed, you will receive an email with the shipment details and tracking number.
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5.How can I obtain technical support or documentation for SN74ABT162245DGGR?
For technical support, including SN74ABT162245DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT162245DGGR requirements.
6.How does Aetrix verify that SN74ABT162245DGGR is sourced from the original manufacturer or authorized distributors?
All SN74ABT162245DGGR 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 SN74ABT162245DGGR meets industry standards.
7.What is the process for return or replacement of SN74ABT162245DGGR?
All SN74ABT162245DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT162245DGGR, 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 SN74ABT162245DGGR part is unused and in its original packaging.
Return procedure for SN74ABT162245DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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