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Texas Instruments SN74ABTH162245DGGR
- Part No.:
- SN74ABTH162245DGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74ABTH162245DGGR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,117
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Product details
Overview
SN74ABTH162245 from Texas Instruments is a 16-bit noninverting bus transceiver with 3-state outputs, designed for synchronous two-way data communication between A and B buses in high-speed digital systems. It supports bidirectional data flow controlled by DIR, features bus-hold on all data inputs, integrates 25-Ω series resistors on A-port outputs to suppress overshoot/undershoot, and operates across –40°C to 85°C at 4.5–5.5 V supply.
For engineers reviewing the SN74ABTH162245 datasheet, SN74ABTH162245 pinout, SN74ABTH162245 application, or SN74ABTH162245 equivalent, key selection criteria include its dual 8-bit or single 16-bit configuration, 3-state isolation timing (tPZH/tPLZ ≤ 7.3 ns), ±12 mA A-port / ±64 mA B-port drive capability, and TSSOP-48 (DGG) package compatibility with dense PCB layouts.
Technical Context
This device implements a flow-through architecture with distributed VCC/GND pins to minimize switching noise and enable stable high-speed operation. Its EPIC-IIB BiCMOS process delivers low power dissipation while maintaining TTL-compatible input thresholds (VIL = 0.8 V, VVIH = 2 V) and robust latch-up immunity (>500 mA per JESD17).
The SN74ABTH162245 integrates active bus-hold circuitry on all A- and B-port data inputs, eliminating external pullup/pulldown resistors. OE control ensures high-impedance state during power-up/down when tied to VCC via a pullup resistor - critical for hot-swap and system initialization integrity.
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 logic systems. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and computing applications. |
| A-Port Output Drive | ±12 mA - sufficient for driving short traces or fanout to multiple CMOS/TTL loads without external buffering. |
| B-Port Output Drive | ±64 mA - enables direct interface to heavier capacitive loads or legacy bus structures. |
| Propagation Delay | tPLH/tPHL ≤ 4.2 ns (A→B), ≤ 5.1 ns (B→A) - supports >200 MHz bus toggle rates under CL = 50 pF. |
| Bus-Hold Current | ±100 µA - maintains valid logic levels on floating inputs without external biasing components. |
| Output Series Resistance | 25 Ω (A-port only) - reduces signal ringing and EMI in point-to-point or stubbed bus topologies. |
Pinout & Package
TSSOP-48 (DGG) package: 48-pin thin shrink small-outline, 0.5 mm pitch, 12.5 mm × 6.1 mm body, moisture sensitivity level 1 (260°C peak reflow), RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: DIR = L → B-to-A; DIR = H → A-to-B. |
| 1OE, 2OE | Output enable input (per 8-bit section) | OE = L → enables transceiver; OE = H → places both A/B ports in high-impedance state. |
| 1A1–1A8, 2A1–2A8 | A-side data I/O terminals | Noninverting bidirectional data lines with integrated 25-Ω series resistance (A-port only). |
| 1B1–1B8, 2B1–2B8 | B-side data I/O terminals | Noninverting bidirectional data lines; higher drive strength (±64 mA) than A-port. |
| VCC (pins 7, 18, 29, 40) | Power supply | Distributed VCC pins reduce simultaneous switching noise and improve PDN stability. |
| GND (pins 4, 11, 22, 33, 44) | Ground reference | Multiple GND pins provide low-inductance return paths for high-speed switching currents. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω series resistors on A-port outputs | Eliminates need for external termination resistors, reducing BOM count and layout area in point-to-point interconnects. |
| Active bus-hold on all data inputs | Maintains stable logic states on unused or unterminated inputs, preventing metastability and system lockup. |
| Flow-through pinout architecture | Enables straight-layer PCB routing with minimal trace skew and reduced crosstalk between A/B bus sections. |
| Distributed VCC/GND pin placement | Minimizes ground bounce (VOLP < 1 V) and supply droop during high-frequency switching events. |
| EPIC-IIB BiCMOS process | Delivers 30% lower dynamic power vs. comparable bipolar transceivers while retaining TTL voltage compatibility. |
Applications
| Industrial PLC Backplane Interface | Embedded Computing Memory Expansion |
|---|---|
|
Use Scenario: Bidirectional data transfer between CPU local bus and modular I/O backplane in programmable logic controllers. IC Role / Device Role / Timing Role: Level-shifting and bus-isolation transceiver enabling synchronous read/write cycles between mismatched load capacitances. Use Value: 64-mA B-port drive sustains signal integrity across 15-cm backplane traces; bus-hold prevents spurious interrupts during module hot-swap. |
Use Scenario: Extending DDR SDRAM address/data bus between SoC and off-chip memory banks in edge AI inference modules. IC Role / Device Role / Timing Role: High-speed 16-bit data path repeater with sub-5-ns propagation delay to meet tight tAC timing budgets. Use Value: Flow-through pinout allows layer-straight routing to minimize inter-pair skew; 25-Ω A-port series resistance damps reflections on stubbed memory bus segments. |
| Automotive Infotainment Head Unit | Test Equipment Digital Pattern Generator |
|
Use Scenario: Isolating and translating control signals between microcontroller domain and display/video subsystem in ASIL-B compliant head units. IC Role / Device Role / Timing Role: Direction-controlled 3-state buffer ensuring fault containment during ESD or overvoltage events on display interface lines. Use Value: Latch-up immunity >500 mA meets AEC-Q100 stress requirements; –40°C to +85°C rating supports under-dash thermal environments. |
Use Scenario: Generating synchronized multi-channel digital stimulus waveforms for IC functional validation in automated test equipment. IC Role / Device Role / Timing Role: Precision-timed bus transceiver synchronizing pattern generator outputs with clock distribution network. Use Value: Matched tPLH/tPHL specs (≤0.5 ns skew) ensure deterministic setup/hold margins across 16-bit parallel vectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245DGGR | Lower voltage range (1.65–3.6 V), CMOS process, no integrated series resistors, ±24 mA drive. | Targeted for 3.3-V or mixed-voltage portable systems; lacks bus-hold and requires external termination. | Select when operating below 3.6 V or requiring lower static power; not drop-in compatible due to voltage and drive mismatch. |
| SN74ALVC162245DGGR | Wider voltage range (1.65–3.6 V), enhanced ESD (±8 kV HBM), ±24 mA drive, no bus-hold or series resistors. | Suitable for high-reliability portable instrumentation where ESD robustness outweighs termination integration. | Choose for battery-powered test gear needing superior ESD protection; requires redesign of biasing and termination networks. |
Compared with SN74ABTH162245, both alternatives operate at lower voltages and lack integrated 25-Ω resistors and bus-hold - necessitating additional passive components and limiting use in legacy 5-V industrial backplanes where SN74ABTH162245's drive strength, noise suppression, and plug-and-play reliability are essential.
Availability
SN74ABTH162245 is available at Aetrix Electronics and suitable for industrial PLC backplanes, embedded memory expansion interfaces, automotive infotainment domains, and automated test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN74ABTH162245 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 SN74ABTH162245 belongs to TI's Widebus™ family of high-speed bus interface devices, engineered specifically for noise-immune, high-drive bidirectional data transfer in industrial and computing infrastructure.
FAQ
What is the maximum output current capability of the SN74ABTH162245 B-port?
The SN74ABTH162245 B-port supports up to ±64 mA per output under recommended operating conditions (VCC = 4.5 V, TA = 25°C). This high drive strength enables reliable signal transmission across electrically demanding bus topologies, including those with elevated trace capacitance or multiple TTL loads. The SN74ABTH162245 datasheet specifies this value in the "Recommended Operating Conditions" table under IOL and IOHL parameters.
Does the SN74ABTH162245 require external pullup resistors on its DIR and OE inputs?
No - the SN74ABTH162245 does not require external pullup resistors on DIR or OE inputs because these are standard TTL-compatible control inputs with defined VIH (≥2 V) and VIL (≤0.8 V) thresholds. However, OE must be tied to VCC via a pullup resistor during power-up/down to guarantee high-impedance state; the minimum resistor value depends on the driver's sink capability, as specified in the SN74ABTH162245 application guidance.
Can the SN74ABTH162245 be used as two independent 8-bit transceivers?
Yes - the SN74ABTH162245 is internally partitioned into two independent 8-bit sections (1A/1B and 2A/2B), each with dedicated DIR and OE controls. This allows concurrent bidirectional operation: for example, 1A↔1B can transfer data in one direction while 2A↔2B handles a separate channel in the opposite direction - a capability confirmed in the SN74ABTH162245 function table and logic diagram.
What package type is used for the SN74ABTH162245DGGR variant?
The SN74ABTH162245DGGR uses the TSSOP-48 (DGG) package: a 48-pin thin shrink small-outline package with 0.5 mm pitch, 12.5 mm × 6.1 mm body size, and moisture sensitivity level 1 (MSL-1, 260°C peak reflow). This package is explicitly listed in TI's packaging addendum for SN74ABTH162245DGGR and supports high-density surface-mount assembly in space-constrained industrial PCBs.
How does the bus-hold feature function on the SN74ABTH162245?
The SN74ABTH162245 integrates active bus-hold circuitry on all A- and B-port data inputs, providing ±100 µA hold current to maintain the last-valid logic state when inputs float. This eliminates external pullup/pulldown resistors and prevents undefined states during hot-swap, power sequencing, or unconnected test points - a behavior verified in the SN74ABTH162245 electrical characteristics table under II(hold).
SN74ABTH162245DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABTH
- 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
SN74ABTH162245DGGR FAQ
1.How can I place an order for SN74ABTH162245DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABTH162245DGGR 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 SN74ABTH162245DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABTH162245DGGR is usually 5 days.
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For technical support, including SN74ABTH162245DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABTH162245DGGR requirements.
6.How does Aetrix verify that SN74ABTH162245DGGR is sourced from the original manufacturer or authorized distributors?
All SN74ABTH162245DGGR 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 SN74ABTH162245DGGR meets industry standards.
7.What is the process for return or replacement of SN74ABTH162245DGGR?
All SN74ABTH162245DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABTH162245DGGR, 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 SN74ABTH162245DGGR part is unused and in its original packaging.
Return procedure for SN74ABTH162245DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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