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Nexperia USA Inc. 74ABTH162245ADGG,1
- Part No.:
- 74ABTH162245ADGG,1
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ABTH162245ADGG,1.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,832
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Product details
Overview
74ABTH162245ADGG,1 from Nexperia is a 16-bit bidirectional bus transceiver with integrated 30 Ω series termination resistors, dual 8-bit direction control (1DIR/2DIR), independent 3-state enables (1OE/2OE), and bus-hold inputs. It operates from 4.5 V to 5.5 V, delivers ±32 mA/±12 mA drive strength, and supports partial power-down via IOFF circuitry. It is used in high-speed backplane and memory interface applications requiring signal integrity and noise immunity.
For engineers reviewing the 74ABTH162245ADGG,1 datasheet, 74ABTH162245ADGG,1 pinout, 74ABTH162245ADGG,1 application, or 74ABTH162245ADGG,1 equivalent, key selection criteria include bidirectional 16-bit data flow control, on-die 30 Ω termination for impedance matching, bus-hold functionality eliminating external pull-ups, and guaranteed operation from –40 °C to +85 °C.
Technical Context
This device implements two independent 8-bit transceiver blocks, each with dedicated direction (nDIR) and output enable (nOE) controls, enabling flexible half-duplex or full-duplex bus partitioning. The BiCMOS process delivers TTL-compatible input thresholds and fast propagation delays (tPLH/tPHL ≤ 3.5 ns at 5 V).
IOFF circuitry actively disables outputs during power-down, blocking backflow current when VCC = 0 V, while bus-hold inputs maintain valid logic states on unused A/B pins without external resistors-critical for hot-swap and low-power standby modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus width | 16-bit bidirectional (configurable as two 8-bit channels) |
| Supply voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL and mixed-voltage systems |
| Output drive | +12 mA / –32 mA - sufficient to drive 50 Ω transmission lines and multiple TTL loads |
| Propagation delay | ≤ 3.5 ns (tPLH/tPHL) - enables >200 MHz data rates in point-to-point links |
| Termination | Integrated 30 Ω series resistors per output - reduces reflections without external components |
| Operating temperature | –40 °C to +85 °C - qualified for industrial-grade embedded and communications equipment |
| IOFF leakage | ±100 μA at VCC = 0 V - prevents damaging back-current during partial power-down |
Pinout & Package
TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Controls data flow direction per 8-bit bank (A→B or B→A) |
| 1OE, 2OE | Output enable input | Individually places corresponding 8-bit outputs into high-impedance state |
| 1A0–1A7, 2A0–2A7 | Data I/O port A | First and second 8-bit bidirectional data terminals connected to local bus side |
| 1B0–1B7, 2B0–2B7 | Data I/O port B | First and second 8-bit bidirectional data terminals connected to remote bus side |
| VCC (pins 7, 18, 31, 42) | Power supply | Multiple VCC pins minimize switching noise and improve PSRR |
| GND (pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins reduce ground bounce and enhance signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω series termination | Eliminates need for 32 discrete 30 Ω resistors, saving PCB area and improving impedance matching |
| Bus-hold inputs (74ABTH variant) | Maintains last-valid logic state on floating A/B inputs without external pull-up/down resistors |
| IOFF partial power-down | Prevents destructive back-current when VCC is off but bus signals remain active |
| BiCMOS output stage | Combines bipolar speed and CMOS low static power for <3.5 ns propagation with <0.7 mA ICC |
| Multiple VCC/GND pins | Reduces simultaneous switching noise (SSN) and improves power delivery stability |
Applications
| Memory Interface Bus | Backplane Data Link |
|---|---|
|
Use Scenario: Bidirectional data transfer between microcontroller and SRAM/Flash memory banks. IC Role / Device Role / Timing Role: Level-shifting and noise-immune bus extension with controlled slew rate and on-die termination. Use Value: Enables clean 16-bit burst reads/writes at >100 MHz without external termination or hold resistors. |
Use Scenario: High-speed inter-board communication across a 16-bit parallel backplane in modular test equipment. IC Role / Device Role / Timing Role: Signal integrity-preserving transceiver isolating boards during hot-swap and managing stub reflections. Use Value: Integrated 30 Ω resistors suppress ringing on 10 cm+ traces; IOFF protects powered-down slots. |
| Industrial PLC I/O Module | Legacy ISA Bus Extension |
|
Use Scenario: Isolating and buffering 16-bit parallel I/O between FPGA-based controller and field-side digital modules. IC Role / Device Role / Timing Role: Robust bus driver with bus-hold preventing undefined states during module insertion/removal. Use Value: Eliminates 16 external pull-ups; –40 °C to +85 °C rating ensures reliability in uncontrolled cabinet environments. |
Use Scenario: Extending legacy ISA bus signals to add-on cards requiring TTL-compatible drive and termination. IC Role / Device Role / Timing Role: Pin-compatible upgrade replacing discrete buffers and termination networks in retro-computing hardware. Use Value: Reduces component count by >20 parts per channel while maintaining strict ISA timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT162245DGGR | No bus-hold; identical pinout, drive, and termination; IOFF supported | Requires external pull-ups on unused inputs; lower ICC in 3-state mode (1.0 μA vs 100 μA) | Select when bus-hold is unnecessary and lowest static current is prioritized |
| 74LVTH162245ADGG,1 | 3.3 V only (2.7–3.6 V); lower drive (±24 mA); no integrated termination | Not pin-compatible; requires external 30 Ω resistors and level translation for 5 V systems | Select only for new 3.3 V designs where lower voltage and power are mandatory |
Compared with SN74ABT162245DGGR, the 74ABTH162245ADGG,1 adds bus-hold for robustness in floating-input scenarios; compared with 74LVTH162245ADGG,1, it maintains full 5 V compatibility and eliminates external termination, simplifying layout and validation.
Availability
74ABTH162245ADGG,1 is available at Aetrix Electronics and suitable for memory interface buses, industrial PLC I/O modules, backplane data links, and legacy ISA bus extensions requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature operation.
Supply support for 74ABTH162245ADGG,1 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer electronics.
The 74ABTH162245A belongs to Nexperia's advanced ABT logic family, designed specifically for high-speed, noise-immune 5 V bus interfacing in space-constrained industrial and communications systems.
FAQ
What is the function of the IOFF circuitry in the 74ABTH162245ADGG,1?
The IOFF circuitry disables all outputs when VCC = 0 V, preventing backflow current from live bus lines into the unpowered device. This protects against latch-up and damage during partial power-down or hot-swap events, with leakage limited to ±100 μA per I/O pin under these conditions.
How does the bus-hold feature eliminate external pull-up resistors?
Bus-hold circuitry uses positive feedback to retain the last-valid logic state on any floating input (A or B port). For the 74ABTH162245ADGG,1, this provides ≥50 μA holding current at VI = 0.8 V and ≥75 μA at VI = 2.0 V, making external pull-ups unnecessary for unused or intermittently driven pins.
Can the 74ABTH162245ADGG,1 be used in a 3.3 V system?
No. The device is specified only for 4.5 V to 5.5 V operation. Applying 3.3 V violates recommended operating conditions and results in undefined logic thresholds, reduced drive strength, and potential failure to meet timing specs. Use 74LVTH162245ADGG,1 for 3.3 V applications.
Why are there multiple VCC and GND pins on the TSSOP48 package?
The eight GND and four VCC pins reduce impedance in power distribution networks, minimizing ground bounce and supply rail collapse during simultaneous switching of all 16 outputs. This maintains signal integrity and meets the device's <3.5 ns propagation delay spec under full load.
74ABTH162245ADGG,1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- 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:
- 32mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74ABTH162245ADGG,1 FAQ
1.How can I place an order for 74ABTH162245ADGG,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABTH162245ADGG,1 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 74ABTH162245ADGG,1 reliable?
The price and inventory of 74ABTH162245ADGG,1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABTH162245ADGG,1 is usually 5 days.
3.What payment methods are accepted for 74ABTH162245ADGG,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABTH162245ADGG,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABTH162245ADGG,1?
74ABTH162245ADGG,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABTH162245ADGG,1 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 74ABTH162245ADGG,1?
For technical support, including 74ABTH162245ADGG,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABTH162245ADGG,1 requirements.
6.How does Aetrix verify that 74ABTH162245ADGG,1 is sourced from the original manufacturer or authorized distributors?
All 74ABTH162245ADGG,1 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 74ABTH162245ADGG,1 meets industry standards.
7.What is the process for return or replacement of 74ABTH162245ADGG,1?
All 74ABTH162245ADGG,1 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABTH162245ADGG,1, 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 74ABTH162245ADGG,1 part is unused and in its original packaging.
Return procedure for 74ABTH162245ADGG,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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