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Texas Instruments 74ABT16245ADGGRG4
- Part No.:
- 74ABT16245ADGGRG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ABT16245ADGGRG4.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,673
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Product details
Overview
74ABT16245ADGGRG4 from Texas Instruments is a 16-bit noninverting bus transceiver with 3-state outputs in a 48-pin TSSOP (DGG) package, operating at 4.5–5.5 V, delivering ±32-mA high-drive outputs and supporting bidirectional data flow between A and B buses under DIR/OE control. It enables synchronous two-way communication in industrial backplanes and memory expansion interfaces.
For engineers reviewing the 74ABT16245ADGGRG4 datasheet, 74ABT16245ADGGRG4 pinout, 74ABT16245ADGGRG4 application, or 74ABT16245ADGGRG4 equivalent, key selection criteria include its 3.4-ns typical propagation delay (tPLH/tPHL), high-impedance state during power-up/down, distributed VCC/GND pinning for noise reduction, and compatibility with 5-V TTL logic systems requiring robust bus isolation.
Technical Context
The 74ABT16245ADGGRG4 implements dual 8-bit transceiver sections with independent direction (DIR) and output-enable (OE) controls per section, enabling flexible A↔B or B↔A data routing without external timing logic. Its EPIC-IIB™ BiCMOS process delivers low ground bounce (<1 V VOLP) and latch-up immunity exceeding 500 mA.
It features flow-through pin architecture to simplify PCB layout, distributed power/ground pins to suppress simultaneous switching noise, and guaranteed high-impedance behavior when VCC is below 2.1 V-critical for hot-swap and power sequencing applications.
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 CMOS systems while maintaining noise margin. |
| Propagation Delay | 1 ns to 3.9 ns (tPLH/tPHL @ VCC = 5 V, TA = 25°C, CL = 50 pF) - supports high-speed bus operation up to ~250 MHz effective throughput. |
| Output Drive | –32 mA IOH / +64 mA IOL - drives heavy capacitive loads and multiple TTL inputs without external buffers. |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - compatible with standard 5-V TTL input levels and provides noise immunity >0.4 V. |
| Power-Up State | High-impedance when VCC < 2.1 V - prevents bus contention during power ramp-up or brownout conditions. |
| Thermal Impedance | θJA = 89 °C/W (DGG package) - enables reliable operation at full drive strength up to 85°C ambient without forced cooling. |
| ESD Rating | 2000 V HBM, 200 V MM - meets industrial handling requirements without additional protection circuitry. |
Pinout & Package
TSSOP-48 (DGG) package, 12.6 mm × 6.2 mm × 1.2 mm max height, JEDEC MO-153 compliant, with gull-wing leads on 0.5-mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Low = B→A data flow; High = A→B data flow - enables independent bidirectional control of two 8-bit lanes. |
| 1OE, 2OE | Output enable input (active-low, per section) | Low = outputs enabled; High = outputs in high-Z - allows dynamic bus isolation without affecting internal state. |
| 1A1–1A8, 2A1–2A8 | A-side data inputs/outputs | Noninverting transceiver ports tied to local bus segment A - electrically isolated from B side when OE is high. |
| 1B1–1B8, 2B1–2B8 | B-side data inputs/outputs | Noninverting transceiver ports tied to remote bus segment B - direction determined by corresponding DIR signal. |
| VCC (Pins 7, 18, 29, 40) | Power supply | Distributed VCC pins minimize IR drop and switching noise across the 48-pin array - critical for signal integrity at high edge rates. |
| GND (Pins 4, 10, 15, 21, 27, 33, 39, 45) | Ground reference | Eight GND pins interleaved with signals reduce ground bounce and improve return path inductance for all 16 data lines. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Input and output pins aligned on opposite sides - eliminates layer jumps and vias in dense PCB layouts, reducing trace length and crosstalk. |
| High-drive 3-state outputs | –32 mA IOH / +64 mA IOL - drives 10+ TTL loads or 50-pF traces at full speed without signal degradation. |
| Power-up/down high-Z | Automatic tri-state when VCC ∈ [0, 2.1 V] - eliminates bus conflicts during system power sequencing or reset events. |
| Distributed VCC/GND | Four VCC and eight GND pins placed across the package - lowers simultaneous switching noise (SSN) by >40% vs. single-rail packages. |
| EPIC-IIB™ BiCMOS process | Combines bipolar speed with CMOS low static power - achieves 3.4-ns propagation delay while limiting ICC to 32 mA max under full load. |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Isolating CPU address/data bus from peripheral expansion slots in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional level-shifting and bus buffering between main controller and add-on modules. Use Value: Prevents bus contention during hot-plug insertion and supports 16-bit parallel transfers at ≤200 MHz effective clock rate. |
Use Scenario: Extending SRAM or Flash memory width in embedded instrumentation with limited board space. IC Role / Device Role / Timing Role: Transceiver enabling shared access between processor and memory banks via time-multiplexed A/B ports. Use Value: Eliminates need for discrete bus switches; 3.9-ns max tPLH ensures setup/hold compliance with 25-ns memory access cycles. |
| Test Equipment Data Bus | Automated Test Fixture Control |
|
Use Scenario: Routing digital stimulus/response signals between FPGA-based pattern generator and DUT interface boards. IC Role / Device Role / Timing Role: Reconfigurable data path selector with deterministic latency and glitch-free enable/disable transitions. Use Value: 1.5-ns tPZL/tPHZ enables sub-5-ns bus turnaround - critical for high-speed boundary-scan and JTAG test vectors. |
Use Scenario: Interfacing microcontroller GPIOs to relay driver arrays and sensor multiplexers in production test fixtures. IC Role / Device Role / Timing Role: Robust signal repeater isolating low-voltage MCU I/O from noisy 24-V industrial actuators. Use Value: ±64-mA IOL sinks relay coil currents directly; high-impedance state prevents backfeed during MCU reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16245ADGVRG4 | Same electrical specs, but TVSOP-48 (DGV) package: 7.1 mm × 4.4 mm, 1.2 mm height, 0.4-mm lead pitch. | Higher pin density; better suited for ultra-compact layouts where footprint area is constrained over height. | Select DGVRG4 when board real estate is premium and reflow profile supports finer-pitch assembly. |
| SN74ABT16245ADLRG4 | SSOP-48 (DL) package: 11.35 mm × 6.2 mm, 2.0 mm height, 0.635-mm pitch; θJA = 94 °C/W. | Lower thermal performance and larger footprint, but higher mechanical robustness and easier hand-soldering. | Choose DLRG4 for prototyping, repair, or environments with vibration/shock where gull-wing reliability is prioritized. |
Compared with SN74ABT16245ADGVRG4 and SN74ABT16245ADLRG4, the 74ABT16245ADGGRG4 offers optimal balance of thermal efficiency (89 °C/W), compactness (12.6 mm × 6.2 mm), and manufacturability - making it preferred for volume production of industrial control and test equipment where thermal headroom and automated assembly yield matter most.
Availability
74ABT16245ADGGRG4 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion subsystems, and automated test fixture control requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74ABT16245ADGGRG4 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 over 50 years of innovation in high-reliability interface ICs.
The ABT16245A family was designed for high-speed, noise-immune bidirectional bus interfacing in industrial, telecom, and test equipment - emphasizing robustness, predictable timing, and seamless integration into 5-V TTL systems.
FAQ
What is the maximum operating temperature range for the 74ABT16245ADGGRG4?
The 74ABT16245ADGGRG4 is characterized for operation from –40°C to +85°C ambient temperature, matching the commercial-grade SN74ABT16245A specification. It is not rated for extended military or automotive temperature ranges; for –55°C to +125°C operation, the SN54ABT16245A (WD package) must be used instead of the 74ABT16245ADGGRG4.
Does the 74ABT16245ADGGRG4 support hot-swap operation?
Yes, the 74ABT16245ADGGRG4 supports hot-swap operation due to its guaranteed high-impedance state when VCC is below 2.1 V. During power-up or power-down sequences, outputs remain in 3-state regardless of DIR or OE logic levels - preventing bus contention when inserted into a live backplane or powered system.
Can the 74ABT16245ADGGRG4 be used with 3.3-V logic systems?
No, the 74ABT16245ADGGRG4 is strictly a 5-V device: its recommended VCC range is 4.5 V to 5.5 V, and input thresholds (VIH = 2.0 V, VIL = 0.8 V) are optimized for TTL-level signaling. Driving it from 3.3-V logic may result in marginal VIH margin; for mixed-voltage systems, level translators or 3.3-V-compatible transceivers like SN74LVC16245A should be used instead of the 74ABT16245ADGGRG4.
How many independent transceiver sections does the 74ABT16245ADGGRG4 contain?
The 74ABT16245ADGGRG4 contains two independent 8-bit transceiver sections: Section 1 (pins 1A1–1A8 / 1B1–1B8 / 1DIR / 1OE) and Section 2 (pins 2A1–2A8 / 2B1–2B8 / 2DIR / 2OE). Each section operates autonomously - allowing simultaneous A↔B and B↔A transfers or separate 8-bit data paths within the same device.
What is the purpose of the distributed VCC and GND pins on the 74ABT16245ADGGRG4?
The 74ABT16245ADGGRG4 uses four VCC pins (7, 18, 29, 40) and eight GND pins (4, 10, 15, 21, 27, 33, 39, 45) to minimize simultaneous switching noise (SSN) and ground bounce. This distributed power delivery reduces impedance in both supply and return paths, ensuring stable voltage references for all 16 drivers - a key factor in maintaining signal integrity at sub-4-ns propagation delays.
74ABT16245ADGGRG4 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:
- 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:
- 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
74ABT16245ADGGRG4 FAQ
1.How can I place an order for 74ABT16245ADGGRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT16245ADGGRG4 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 74ABT16245ADGGRG4 reliable?
The price and inventory of 74ABT16245ADGGRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT16245ADGGRG4 is usually 5 days.
3.What payment methods are accepted for 74ABT16245ADGGRG4?
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4.How is shipping managed for 74ABT16245ADGGRG4?
74ABT16245ADGGRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT16245ADGGRG4 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 74ABT16245ADGGRG4?
For technical support, including 74ABT16245ADGGRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT16245ADGGRG4 requirements.
6.How does Aetrix verify that 74ABT16245ADGGRG4 is sourced from the original manufacturer or authorized distributors?
All 74ABT16245ADGGRG4 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 74ABT16245ADGGRG4 meets industry standards.
7.What is the process for return or replacement of 74ABT16245ADGGRG4?
All 74ABT16245ADGGRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT16245ADGGRG4, 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 74ABT16245ADGGRG4 part is unused and in its original packaging.
Return procedure for 74ABT16245ADGGRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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