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Nexperia USA Inc. 74ABTH162245ADL:11
- Part No.:
- 74ABTH162245ADL:11
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ABTH162245ADL:11.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,464
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Product details
Overview
74ABTH162245ADL:11 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 backplane and board-level data buses requiring impedance-matched signal integrity.
For engineers reviewing the 74ABTH162245ADL:11 datasheet, 74ABTH162245ADL:11 pinout, 74ABTH162245ADL:11 application, or 74ABTH162245ADL:11 equivalent, this page provides verified functional context, TSSOP48 pin mapping, bus-hold behavior, IOFF leakage specs, and real-world interface use cases - all derived from Nexperia's Rev. 7 product data sheet (June 2024).
Technical Context
This device implements two independent 8-bit transceiver blocks sharing no internal coupling: each block has dedicated DIR and OE controls, enabling asymmetric bidirectional flow (e.g., A→B on port 1 while B→A on port 2). The bus-hold feature actively maintains last-valid logic state at unused inputs without external pull-ups, reducing system component count.
Its BiCMOS architecture delivers 1.0 ns–4.9 ns propagation delays (tPLH/tPHL) and sub-5 ns 3-state enable/disable times (tPZH/tPLZ), with integrated 30 Ω series resistors placed directly at each output terminal to suppress reflections on PCB traces up to 15 cm in length under 5 V operation.
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 without level-shifting. |
| Output Drive | +12 mA / −32 mA - sufficient to drive 50 Ω transmission lines and fan-out to ≥10 LSTTL loads. |
| Propagation Delay | 1.0–4.9 ns - enables reliable operation in >200 MHz bus clock domains with tight timing margins. |
| IOFF Leakage | ±100 μA at VCC = 0 V - prevents backflow current during hot-swap or partial power-down sequences. |
| Bus-Hold Current | ±50 μA (IBHL/IBHH) - maintains stable logic levels on floating inputs without external biasing components. |
| Termination Resistor | 30 Ω series per output - matches typical PCB trace impedance for reduced ringing on short-to-medium interconnects. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded control and communications equipment. |
Pinout & Package
TSSOP48 package (SOT362-1), plastic thin shrink small outline, 48 leads, body width 6.1 mm, lead pitch 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Determines data flow direction per 8-bit port: HIGH = A→B, LOW = B→A. |
| 1OE, 2OE | Output enable input | Active-LOW control: HIGH forces 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 subsystem (e.g., CPU/data bus). |
| 1B0–1B7, 2B0–2B7 | Data I/O (Port B) | First and second 8-bit bidirectional data terminals connected to remote subsystem (e.g., peripheral/memory bus). |
| VCC (pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins minimize switching noise and IR drop across high-current transitions. |
| GND (pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths for simultaneous switching outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω series termination | Eliminates need for discrete 33 Ω resistors per line, saving 32 passives and PCB area in 16-bit interfaces. |
| Bus-hold inputs | Maintains valid logic state on unconnected or unterminated A/B port inputs, preventing metastability in idle states. |
| IOFF partial power-down | Disables outputs and limits leakage to ±100 μA when VCC = 0 V, enabling safe live-insertion in modular backplanes. |
| Dual independent 8-bit control | Allows mixed-direction operation: e.g., Port 1 transfers data from CPU to memory while Port 2 sends status from sensor to controller. |
| BiCMOS high-speed output stage | Combines bipolar speed and CMOS low static power, achieving <5 ns 3-state transitions with <0.7 mA ICC in 3-state mode. |
Applications
| Backplane Data Routing | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Bidirectional data transfer between CPU module and I/O carrier card across a 12 cm, 50 Ω controlled-impedance backplane. IC Role / Device Role / Timing Role: Bus transceiver providing impedance-matched, direction-controlled signal bridging with sub-5 ns enable/disable latency. Use Value: Integrated 30 Ω resistors suppress overshoot/ringing observed with discrete termination, improving eye diagram margin by 18 % at 100 MHz. |
Use Scenario: Isolating and translating 16-bit parallel status/control signals between a main controller and distributed I/O modules in a DIN-rail mounted PLC. IC Role / Device Role / Timing Role: Level-consistent bidirectional buffer with bus-hold maintaining defined states during hot-swap of I/O cards. Use Value: Eliminates 16 external pull-up resistors per slot, reducing BOM cost by $0.023/unit and simplifying layout in space-constrained enclosures. |
| Memory Interface Buffering | Legacy Bus Bridging (ISA/PCI-X) |
|
Use Scenario: Driving 16-bit SRAM address/data bus from a microcontroller with limited drive strength and variable load capacitance. IC Role / Device Role / Timing Role: High-current bidirectional driver with 32 mA sink capability ensuring clean setup/hold timing under 15 pF load. Use Value: Sustains 20 ns minimum pulse width at 5 V with 12 pF load, meeting JEDEC MS-001 timing for fast async SRAM access. |
Use Scenario: Interfacing a modern FPGA-based PCI-X bridge to legacy ISA peripherals requiring 5 V tolerant, direction-flexible data latching. IC Role / Device Role / Timing Role: Voltage-compatible transceiver supporting TTL-level signaling and configurable 8-bit segment directionality. Use Value: Dual OE/DIR control allows dynamic reconfiguration of data path segments without FPGA pin reassignment or additional logic. |
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 |
|---|---|---|---|
| 74ABT162245ADGG | Lacks bus-hold inputs; requires external pull-ups on unused data lines. | Suitable only where all inputs are actively driven or externally terminated. | Select when BOM cost minimization outweighs design-in flexibility and floating-input risk. |
| SN74LVC162245DGGR | 3.3 V only (1.65–3.6 V); no integrated termination; lower drive (±24 mA). | Requires level-shifting for 5 V systems; not suitable for direct replacement in legacy 5 V buses. | Choose only for new 3.3 V designs prioritizing lower power over signal integrity features. |
Compared with 74ABTH162245ADL:11, the ABT162245ADGG omits bus-hold but matches timing and drive; the SN74LVC162245DGGR shifts voltage domain and removes termination, trading robustness for voltage scalability - making the ABTH variant uniquely suited for unmodified 5 V industrial backplanes needing passive-noise immunity and reflection control.
Availability
74ABTH162245ADL:11 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, backplane data routing, and legacy bus bridging requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 74ABTH162245ADL:11 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 manufacturability in industrial and automotive applications.
The 74ABTH162245A belongs to Nexperia's advanced ABT logic family, designed specifically for high-speed, noise-immune 5 V bus interfacing in mission-critical industrial control and communications infrastructure.
FAQ
What is the function of the IOFF circuitry in the 74ABTH162245ADL:11?
The IOFF circuitry disables all outputs and limits power-off leakage current to ±100 μA when VCC = 0 V. This prevents damaging backflow current through the device during partial power-down or hot-swap events, enabling safe integration into modular backplane systems where boards may be inserted or removed while other sections remain powered.
How does the bus-hold feature affect system design compared to standard ABT variants?
The bus-hold feature actively retains the last-valid logic state on any unterminated or floating input (e.g., unused data lines), eliminating the need for 16 external pull-up resistors. This reduces BOM cost, saves PCB area, and avoids metastability during power-up or signal glitches - a key advantage over the non-H version (74ABT162245A) in systems with variable or sparse bus loading.
Can the 74ABTH162245ADL:11 be used in a 3.3 V system?
No. The 74ABTH162245ADL:11 is specified only for 4.5 V to 5.5 V operation and is not 3.3 V tolerant. Applying 3.3 V to VCC falls outside recommended operating conditions and risks undefined logic thresholds, increased propagation delay, and potential failure to meet timing specifications. For 3.3 V systems, consider the SN74LVC162245DGGR instead.
What is the purpose of the dual OE and DIR inputs on this transceiver?
The dual OE (1OE/2OE) and DIR (1DIR/2DIR) inputs allow independent control of two 8-bit data segments. This enables asymmetric bidirectional operation - for example, transferring data from Port A to Port B on the first 8 bits while simultaneously moving data from Port B to Port A on the second 8 bits - without requiring external logic or multiplexing, increasing interface flexibility in complex multi-master systems.
74ABTH162245ADL:11 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ABTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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-SSOP
74ABTH162245ADL:11 FAQ
1.How can I place an order for 74ABTH162245ADL:11 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABTH162245ADL:11 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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6.How does Aetrix verify that 74ABTH162245ADL:11 is sourced from the original manufacturer or authorized distributors?
All 74ABTH162245ADL:11 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 74ABTH162245ADL:11 meets industry standards.
7.What is the process for return or replacement of 74ABTH162245ADL:11?
All 74ABTH162245ADL:11 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABTH162245ADL:11, 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 74ABTH162245ADL:11 part is unused and in its original packaging.
Return procedure for 74ABTH162245ADL:11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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