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Texas Instruments 74ABT162245DLRG4
- Part No.:
- 74ABT162245DLRG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ABT162245DLRG4.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,798
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Product details
Overview
74ABT162245DLRG4 from Texas Instruments is a 16-bit noninverting 3-state transceiver for synchronous two-way bus communication, featuring 25-Ω integrated series resistors on A-port outputs, Ioff partial-power-down support, and flow-through pinout. It operates from 4.5 V to 5.5 V across −40°C to 85°C and delivers 64 mA sink capability on B ports.
For engineers reviewing the 74ABT162245DLRG4 datasheet, 74ABT162245DLRG4 pinout, 74ABT162245DLRG4 application, or 74ABT162245DLRG4 equivalent, key selection considerations include bidirectional data routing control via DIR/OE inputs, ground-bounce suppression (VOLP <1 V), distributed VCC/GND pins for noise reduction, and compatibility with 5-V TTL/CMOS systems requiring high-speed isolation.
Technical Context
The 74ABT162245DLRG4 implements dual 8-bit or single 16-bit bidirectional data transfer using separate direction-control (DIR) and output-enable (OE) inputs per section. Its flow-through architecture places A- and B-side signals on opposite package edges to minimize PCB trace crossovers.
It integrates 25-Ω series resistors on all A-port outputs to dampen overshoot/undershoot without external components, while Ioff circuitry ensures ≤±100 µA leakage when VCC = 0 V-enabling safe back-drive prevention during partial power-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL logic rails and industrial 5-V supply tolerances. |
| B-Port Sink Current | 64 mA max - supports driving heavy capacitive loads or multiple TTL inputs without external buffers. |
| A-Port Series Resistance | 25 Ω typ - eliminates need for discrete series termination resistors, reducing BOM count and layout area. |
| Propagation Delay | 1 ns to 4.9 ns - enables reliable operation in high-speed bus systems up to ~100 MHz with tight timing margins. |
| Ioff Leakage | ±100 µA at VCC = 0 V - prevents damaging current flow during hot-insertion or staggered power sequencing. |
| Operating Temperature | −40°C to +85°C - qualified for commercial and industrial ambient environments without derating. |
| ESD Protection | 2000-V HBM, 200-V MM - exceeds JEDEC JESD22-A114/A115 requirements for robust board-level handling. |
Pinout & Package
74ABT162245DLRG4 uses a 48-pin SSOP (DL) package with 0.5-mm pitch, 12.4 mm × 6.0 mm body size, and 1.2-mm max height-optimized for space-constrained PCBs while maintaining hand-solderability and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: low = B→A, high = A→B; enables independent control of two 8-bit channels. |
| 1OE, 2OE | Output enable input (per 8-bit section) | Active-low; places corresponding A/B ports in high-impedance state when high-critical for bus arbitration and isolation. |
| 1A1–1A8, 2A1–2A8 | A-side data I/O terminals | Noninverting transceiver inputs/outputs with integrated 25-Ω series resistance; source/sink up to 12 mA. |
| 1B1–1B8, 2B1–2B8 | B-side data I/O terminals | Noninverting transceiver inputs/outputs; sink up to 64 mA (B port), source up to 24 mA (B port). |
| VCC, GND | Power and ground connections | Distributed across package (12× VCC, 12× GND) to reduce simultaneous switching noise and improve signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω series resistors | Eliminates external termination components on A-port outputs, reducing layout complexity and improving signal fidelity. |
| Flow-through architecture | Places A- and B-side pins on opposite sides of the package, enabling straight-layer PCB routing and minimizing vias. |
| Ioff partial-power-down support | Prevents current backflow when VCC = 0 V, allowing safe integration into systems with dynamic power sequencing. |
| Distributed VCC/GND pins | Reduces high-frequency ground bounce and supply noise by lowering inductance in power delivery paths. |
| Latch-up immunity | Exceeds 500 mA per JESD17 - ensures robustness against transient-induced latch-up in noisy industrial environments. |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module Bus Isolation |
|---|---|
Use Scenario: Bidirectional data exchange between CPU and I/O expansion modules over a shared 16-bit parallel bus in programmable logic controllers. IC Role / Device Role / Timing Role: Transceiver managing synchronous read/write cycles between processor and peripheral cards, with DIR/OE enabling time-multiplexed access. Use Value: Integrated 25-Ω resistors suppress reflections on long backplane traces; Ioff prevents fault currents during module hot-swap. |
Use Scenario: Isolating microcontroller GPIO banks from high-noise actuator driver circuits in vehicle body electronics. IC Role / Device Role / Timing Role: Level-shifting and bus-separation interface between 5-V MCU and 12-V load drivers, controlled via OE for power-gated subsystems. Use Value: 64 mA B-port sink capability drives optocoupler inputs directly; distributed VCC/GND minimizes EMI coupling into CAN/LIN domains. |
| Test Equipment Digital Pattern Generator | Legacy Computer Memory Expansion Interface |
Use Scenario: Driving high-capacitance test fixture loads (≥100 pF) from FPGA-based pattern generators in automated test systems. IC Role / Device Role / Timing Role: Output buffer and impedance-matching stage for precise timing waveforms, with DIR selecting stimulus/response direction. Use Value: Low propagation delay (≤4.9 ns) preserves edge integrity at 100-MHz update rates; VOLP <1 V ensures clean logic thresholds. |
Use Scenario: Interfacing modern 5-V memory controllers to legacy ISA-bus peripherals requiring 16-bit data handshaking. IC Role / Device Role / Timing Role: Synchronous transceiver translating between CPU address/data buses and expansion card data lanes under ISA protocol timing. Use Value: Flow-through pinout simplifies trace routing on dense ISA add-in cards; 25-Ω A-port termination matches typical bus characteristic impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT162245DGGR | Same electrical specs; TSSOP-48 (DGG) package with 0.5-mm pitch, 8.6-mm width, and 1.2-mm height. | Better thermal performance (θJA = 70°C/W vs. 63°C/W) but narrower body-requires tighter PCB spacing. | Select DGGR for higher-density layouts where footprint area is constrained more than height or thermal margin. |
| SN74LVC162245DGGR | Lower voltage operation (1.65–3.6 V), 32 mA B-port drive, no integrated series resistors, and ±10 µA Ioff. | Designed for mixed-voltage 3.3-V/2.5-V systems-not drop-in compatible with 5-V-only designs using 74ABT162245DLRG4. | Choose LVC variant only when migrating to lower-voltage logic families and redesigning termination strategy. |
Compared with SN74ABT162245DGGR, the 74ABT162245DLRG4 offers superior thermal resistance (63°C/W) in a wider SSOP body, easing heat dissipation in high-duty-cycle bus applications; versus SN74LVC162245DGGR, it maintains full 5-V TTL compatibility and eliminates external termination, preserving legacy system interoperability.
Availability
74ABT162245DLRG4 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, automated test equipment, and legacy computer expansion interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for 74ABT162245DLRG4 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 expertise in high-reliability interface ICs and widebus technologies.
The ABT162245 family was engineered for robust, high-speed bidirectional bus interfacing in industrial and computing systems-emphasizing noise immunity, power sequencing safety, and minimal external component count.
FAQ
What is the maximum operating temperature range for the 74ABT162245DLRG4?
The 74ABT162245DLRG4 is rated for continuous operation from −40°C to +85°C. This range is validated per TI's recommended operating conditions and applies specifically to the DL-package variant shipped in tape-and-reel format as 74ABT162245DLRG4. Operation outside this range may result in parametric degradation or functional failure.
Does the 74ABT162245DLRG4 require external series resistors on its A-port outputs?
No. The 74ABT162245DLRG4 integrates 25-Ω series resistors on all A-port outputs, as confirmed in the device description and absolute maximum ratings table. This eliminates the need for external termination resistors, reducing bill-of-materials cost and PCB real estate usage while maintaining signal integrity on transmission lines.
How does the Ioff feature function in the 74ABT162245DLRG4 during power-down sequences?
The Ioff circuitry in the 74ABT162245DLRG4 disables all outputs and limits leakage current to ±100 µA when VCC = 0 V, regardless of input or output voltage levels (up to 4.5 V). This prevents damaging back-current flow during partial power-down-critical for systems with staggered supply sequencing or hot-swap capability.
Can the 74ABT162245DLRG4 be used as two independent 8-bit transceivers?
Yes. The 74ABT162245DLRG4 contains two fully independent 8-bit sections, each with dedicated DIR and OE controls (1DIR/1OE and 2DIR/2OE). This allows simultaneous or asynchronous bidirectional data transfer between two separate bus pairs-verified in the functional truth table and logic diagram of the official datasheet SCBS239F.
What is the pin-compatible alternative to the 74ABT162245DLRG4 in TSSOP packaging?
The SN74ABT162245DGGR is the direct TSSOP-48 (DGG) counterpart to the 74ABT162245DLRG4, sharing identical logic functionality, electrical specifications, and pin assignment. Both devices use the same 48-pin layout and are functionally interchangeable-differing only in package dimensions, thermal characteristics, and reel packaging configuration.
74ABT162245DLRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
74ABT162245DLRG4 FAQ
1.How can I place an order for 74ABT162245DLRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT162245DLRG4 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 74ABT162245DLRG4 reliable?
The price and inventory of 74ABT162245DLRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT162245DLRG4 is usually 5 days.
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4.How is shipping managed for 74ABT162245DLRG4?
74ABT162245DLRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT162245DLRG4 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 74ABT162245DLRG4?
For technical support, including 74ABT162245DLRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT162245DLRG4 requirements.
6.How does Aetrix verify that 74ABT162245DLRG4 is sourced from the original manufacturer or authorized distributors?
All 74ABT162245DLRG4 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 74ABT162245DLRG4 meets industry standards.
7.What is the process for return or replacement of 74ABT162245DLRG4?
All 74ABT162245DLRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT162245DLRG4, 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 74ABT162245DLRG4 part is unused and in its original packaging.
Return procedure for 74ABT162245DLRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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