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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:2,769
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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 output 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 TTL-compatible backplane and board-level data buses requiring impedance-matched signal integrity.
For engineers reviewing the 74ABTH162245ADGG:1 datasheet, 74ABTH162245ADGG:1 pinout, 74ABTH162245ADGG:1 application, or 74ABTH162245ADGG:1 equivalent, this page provides verified functional context, TSSOP48 package mapping, bus-hold behavior implications, propagation delay specs (tPLH/tPHL ≤ 3.5 ns), and real-world interface constraints for 5 V digital systems.
Technical Context
This device implements two independent 8-bit transceiver channels, each with dedicated direction (nDIR) and output enable (nOE) controls, enabling flexible half-duplex or full-duplex bus partitioning. Its BiCMOS architecture delivers TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and rail-to-rail output swing under load.
The integrated 30 Ω series termination resistors are placed on all 16 I/O pins (1A0–1A7, 1B0–1B7, 2A0–2A7, 2B0–2B7), reducing signal reflections without external components. Bus-hold circuitry actively maintains logic states on unused inputs, eliminating need for external pull-ups while drawing only 50–75 μA per held input.
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 CMOS logic families |
| Output drive | +12 mA / −32 mA - sufficient to drive 50 Ω transmission lines and multiple TTL loads |
| Propagation delay | tPLH/tPHL ≤ 3.5 ns @ VCC = 5.0 V - supports >200 MHz data rates in point-to-point links |
| Termination | Integrated 30 Ω series resistors on all 16 I/Os - eliminates PCB routing for discrete termination |
| IOFF leakage | ±100 μA @ VCC = 0 V - prevents backflow current during hot-swap or partial power-down |
| Operating temperature | −40 °C to +85 °C - qualified for industrial-grade embedded and communications equipment |
Pinout & Package
TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Active-HIGH selects A→B (1DIR) or B→A (2DIR) data flow per 8-bit channel |
| 1OE, 2OE | Output enable input | Active-LOW enables outputs for corresponding 8-bit channel; HIGH forces 3-state |
| 1A0–1A7, 2A0–2A7 | Data I/O port A | Primary bidirectional bus side; bus-hold active on 74ABTH variant |
| 1B0–1B7, 2B0–2B7 | Data I/O port B | Secondary bidirectional bus side; same electrical characteristics as port A |
| VCC (pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins minimize switching noise and IR drop across die |
| GND (pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit control | Enables asymmetric bus arbitration: e.g., CPU writes to memory (1DIR=H, 1OE=L) while peripherals read status (2DIR=L, 2OE=L) |
| Integrated 30 Ω series termination | Matches typical PCB trace impedance, reducing overshoot/ringing without layout overhead or BOM cost |
| Bus-hold inputs | Maintains last valid logic state on floating inputs using <75 μA hold current - removes need for 10 kΩ pull-up/down resistors |
| IOFF partial power-down | Blocks current flow between powered/unpowered sections during live insertion or sleep mode transitions |
| High-speed BiCMOS process | Combines bipolar speed (sub-4 ns propagation) with CMOS low static power (<0.7 mA ICC in 3-state) |
Applications
| Backplane Data Routing | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Isolating and level-shifting data between CPU bus and modular I/O carrier boards in a 5 V rack-mounted controller. IC Role / Device Role / Timing Role: Bidirectional buffer with direction-controlled data mirroring and on-die termination to suppress stub reflections on 10 cm backplane traces. Use Value: Eliminates 32 external 33 Ω resistors and 16 pull-up resistors, reducing layer count and improving signal fidelity at 50 Mbps. |
Use Scenario: Interfacing microcontroller GPIO banks to isolated digital input/output modules in factory automation cabinets. IC Role / Device Role / Timing Role: Hot-swap-safe bus transceiver that remains electrically isolated during module insertion/removal via IOFF protection. Use Value: Prevents backfeed into powered controller during field maintenance, avoiding system resets or latch-up events. |
| Memory-Mapped Peripheral Interface | TTL-Level FPGA Bridging |
|
Use Scenario: Connecting an ASIC's 16-bit address/data multiplexed bus to legacy SRAM or EPROM devices with separate address and data lines. IC Role / Device Role / Timing Role: Direction-controlled transceiver enabling time-multiplexed address latching followed by data read/write cycles. Use Value: Synchronizes with ASIC timing using sub-4 ns delays, meeting 25 ns SRAM access windows without added wait states. |
Use Scenario: Level-translating and terminating signals between a 5 V TTL FPGA I/O bank and external ADC/DAC evaluation boards. IC Role / Device Role / Timing Role: Impedance-matched interface ensuring clean 5 V logic edges into 50 Ω scope probes or ADC sample clocks. Use Value: Integrated 30 Ω resistors maintain signal integrity up to 200 MHz, avoiding eye diagram degradation seen with unterminated FPGA outputs. |
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, timing, and termination; IOFF supported | Requires external pull-ups on unused inputs; otherwise functionally interchangeable | Select when bus-hold is unnecessary and lowest static power (<0.5 mA ICC) is prioritized |
| 74LVTH162245ADGG | 3.3 V supply only (2.7–3.6 V); lower drive (±24 mA); same TSSOP48 footprint | Not 5 V tolerant; requires level-shifting if interfacing with 5 V systems | Choose for mixed-voltage systems where 3.3 V core logic coexists with 5 V peripherals |
Compared with SN74ABT162245DGGR, the 74ABTH162245ADGG:1 adds bus-hold for robustness against floating inputs but increases quiescent current by ~200 μA per enabled channel; versus 74LVTH162245ADGG, it trades 3.3 V compatibility for guaranteed 5 V operation and higher drive strength essential in legacy industrial backplanes.
Availability
74ABTH162245ADGG:1 is available at Aetrix Electronics and suitable for industrial PLC backplanes, memory-mapped peripheral interfaces, TTL-level FPGA bridging, and hot-swap-capable I/O expansion modules requiring stable component supply across extended temperature ranges.
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 headquartered in Nijmegen, Netherlands, specializing in high-performance logic, analog, and discrete components for industrial, automotive, and computing markets.
This device belongs to the ABTH advanced bi-directional transceiver product line, engineered for robust 5 V bus interfacing in noise-sensitive, high-density PCB environments with strict signal integrity requirements.
FAQ
Does 74ABTH162245ADGG:1 support hot-swap insertion?
Yes - its IOFF circuitry actively disables outputs and blocks current flow when VCC = 0 V, limiting backfeed current to ±100 μA. This allows safe insertion into a live 5 V backplane without disrupting other modules or triggering system resets, provided GND makes contact first per standard hot-swap sequencing.
Can the bus-hold feature be disabled?
No - bus-hold is permanently enabled on the 74ABTH variant and cannot be disabled via control pins or configuration. It activates automatically on all A- and B-side inputs when no external driver is present, holding the last valid logic state with 50–75 μA of current per input.
What is the maximum data rate supported?
Based on tPLH/tPHL ≤ 3.5 ns and 30 Ω termination, the device reliably supports NRZ data rates up to 200 Mbps in point-to-point configurations with 50 pF load and controlled-impedance traces. For multi-drop buses, derate to ≤100 Mbps due to cumulative stub effects.
Are the 30 Ω termination resistors internal to the silicon or package?
The 30 Ω resistors are monolithically integrated within the silicon die, placed in series between the output driver and the bond pad. They are not package-level elements, ensuring consistent value across temperature (±15 %) and process variation without requiring external trimming.
74ABTH162245ADGG:1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ABTH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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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