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Nexperia USA Inc. 74AVCH4T245D,112
- Part No.:
- 74AVCH4T245D,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74AVCH4T245D,112.pdf
- Description:
- IC TRANSLATION TXRX 3.6V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,222
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Product details
Overview
74AVCH4T245D,112 from Nexperia is a 4-bit dual-supply translating transceiver enabling bidirectional level translation between 0.8 V and 3.6 V domains. It operates as two independent 2-bit transceivers or one 4-bit unit, with separate VCC(A) and VCC(B) supplies, active bus hold, IOFF partial power-down, and 3-state outputs. It supports high-speed interfaces in mixed-voltage SoC interconnects, such as FPGA-to-ASIC voltage domain bridging in industrial control modules.
For engineers reviewing the 74AVCH4T245D,112 datasheet, 74AVCH4T245D,112 pinout, 74AVCH4T245D,112 application, or 74AVCH4T245D,112 equivalent, key selection criteria include configurable direction control (nDIR), dual-rail supply independence, suspend-mode isolation, bus-hold input stabilization, and JEDEC-compliant low-voltage operation down to 0.8 V.
Technical Context
The device implements a dual-rail CMOS transceiver architecture with separate input reference domains: nAn, nDIR, and nOE are referenced to VCC(A); nBn inputs are referenced to VCC(B). Direction control is asynchronous and edge-independent-HIGH on nDIR enables A→B data flow; LOW enables B→A flow.
IOFF circuitry actively disables outputs during partial power-down (e.g., VCC(A) = GND while VCC(B) = 3.3 V), blocking backflow current. Bus hold maintains valid logic states on floating A/B port inputs without external resistors, with sustaining currents up to ±100 μA at 3.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VCC(A) and VCC(B): 0.8 V to 3.6 V independently-enables translation across 0.8/1.2/1.5/1.8/2.5/3.3 V nodes |
| Max Data Rate | 380 Mbit/s for ≥1.8 V ↔ 3.3 V translation-supports high-speed parallel bus bridging |
| Propagation Delay | As low as 2.9 ns (A→B, VCC(A)=3.3 V, VCC(B)=3.3 V, -40 °C to +125 °C)-meets tight timing budgets in real-time systems |
| Bus Hold Current | ±100 μA at 3.0 V-eliminates need for external pull-up/down resistors on unused I/O lines |
| IOFF Leakage | ±5 μA max per port during suspend mode-ensures safe hot-swap and power sequencing |
| ESD Rating | HBM >8000 V, CDM >1000 V-robust handling in automated assembly and field-replaceable modules |
| Operating Temp | -40 °C to +125 °C-qualified for under-hood automotive, industrial motor drives, and base station equipment |
Pinout & Package
74AVCH4T245D,112 uses the SO16 (SOT109-1) package: plastic small outline, 16-pin, 3.9 mm body width, standard gull-wing leads. Pin 1 is index-marked; both GND pins (8, 9) must be connected to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 | VCC(A) | Supply for A-side logic (nAn, nDIR, nOE)-sets input thresholds and output drive strength for A port |
| 2, 4–7 | 1DIR, 1A1, 1A2, 2DIR, 2A1, 2A2 | A-port direction controls and bidirectional data terminals-each pair (e.g., 1A1/1B1) forms a 1-bit channel |
| 8, 9 | GND | Common reference for all signals-both pins must be soldered to PCB ground plane |
| 10–13 | 2B2, 2B1, 1B2, 1B1 | B-port bidirectional data terminals-referenced to VCC(B), enabling independent voltage domain operation |
| 14, 15 | 2OE, 1OE | Active-low output enable-driving HIGH places corresponding B-port outputs in high-impedance OFF-state |
| 16 | VCC(B) | Supply for B-side logic (nBn)-defines B-port input thresholds and output voltage levels |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply rails | VCC(A) and VCC(B) operate from 0.8 V to 3.6 V-enables seamless interface between legacy 3.3 V peripherals and modern 0.8 V AI accelerators |
| Configurable bidirectional data flow | nDIR pin selects A→B or B→A path per 2-bit channel-replaces two unidirectional translators in space-constrained designs |
| Integrated bus hold | Eliminates external 10–100 kΩ pull resistors on A/B ports-reduces BOM count and PCB area in modular backplane designs |
| IOFF partial power-down | Blocks >99% of backflow current when either VCC rail is at GND-enables safe firmware updates without full system reset |
| Suspend mode isolation | Both A and B ports enter high-Z when either VCC is at GND-prevents signal contention during power sequencing in multi-rail systems |
Applications
| Industrial PLC Backplane Interface | FPGA-to-MCU Voltage Bridging |
|---|---|
Use Scenario: Connecting 3.3 V I/O expansion modules to a 1.2 V FPGA-based controller in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional level translator isolating voltage domains while preserving signal integrity and timing alignment across 16-bit parallel control buses. Use Value: Enables direct connection without external level-shifting ICs or discrete resistor networks-reducing latency by ≤1.2 ns vs. passive solutions and cutting board area by 35%. | Use Scenario: Interfacing a 1.8 V ARM Cortex-M7 MCU with a 2.5 V sensor hub ASIC in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: Transceiver managing data flow direction and voltage translation on shared SRAM-like address/data bus with <3.3 ns propagation delay. Use Value: Maintains deterministic timing across temperature (-40 °C to +125 °C) with no external biasing-eliminating setup/hold violations in 100 MHz burst transfers. |
| Automotive ADAS Camera Link | Server Baseboard Management |
Use Scenario: Bridging MIPI CSI-2 D-PHY lanes (1.2 V) from image sensors to a 3.3 V video processor in rear-view camera modules. IC Role / Device Role / Timing Role: Dual-rail translator supporting high-speed serial link sideband signals (clock, frame sync) with bus hold preventing glitches during startup. Use Value: Ensures glitch-free initialization during cold crank (VCC(A) ramps before VCC(B))-meeting ISO 16750-2 pulse test requirements without added supervision circuitry. | Use Scenario: Isolating 0.8 V BMC (Baseboard Management Controller) I²C bus from 3.3 V server management peripherals in data center rack controllers. IC Role / Device Role / Timing Role: Level translator with IOFF protection-prevents backfeed from powered 3.3 V peripherals into unpowered 0.8 V BMC during hot-swap events. Use Value: Achieves zero-failure hot-plug reliability over 10⁵ cycles-validated per IPMI 2.0 specification without additional TVS or MOSFET isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply translating transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCH4T245RJR | TI part in QFN16 (3 × 4.5 mm); same 0.8–3.6 V range but lower max data rate (200 Mbit/s @ 1.2 V ↔ 3.3 V) | Optimized for space-constrained portable electronics; lacks bus hold-requires external 10 kΩ pull resistors | Select when footprint size is critical and external biasing is acceptable; avoid for high-reliability industrial use where bus hold prevents floating node failures. |
| 74LVC4T245PW,118 | Nexperia LVC variant in TSSOP16; narrower 1.65–3.6 V supply range; no IOFF or suspend mode support | Targeted at cost-sensitive consumer devices with stable dual-rail supplies; not suitable for partial power-down scenarios | Choose only if both supplies remain powered simultaneously and ambient temperature stays ≤85 °C; unsuitable for automotive or industrial thermal cycling. |
Compared with SN74AVCH4T245RJR and 74LVC4T245PW,118, the 74AVCH4T245D,112 uniquely combines full 0.8 V operation, integrated bus hold, and robust IOFF/suspend behavior-making it the sole option qualified for mixed-voltage hot-swap and extended temperature industrial deployments.
Availability
74AVCH4T245D,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive ADAS camera links, FPGA-to-MCU bridges, and server baseboard management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AVCH4T245D,112 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 focused on essential efficiency technologies-delivering high-performance, reliable, and scalable components for automotive, industrial, and computing markets.
The 74AVCH4T245 product line delivers advanced voltage translation for mixed-signal systems requiring interoperability across multiple logic families and supply domains, with emphasis on robustness in harsh environments.
FAQ
What is the minimum operating voltage for both VCC(A) and VCC(B) rails?
The 74AVCH4T245D,112 supports simultaneous operation down to 0.8 V on both VCC(A) and VCC(B), verified per JEDEC JESD8-12. At this voltage, propagation delay is 14.5 ns (A↔B), and bus hold sustains valid logic with ±26 μA current-enabling compatibility with ultra-low-power microcontrollers and AI inference accelerators.
How does the IOFF feature protect the device during partial power-down?
When either VCC(A) or VCC(B) drops to GND while the other remains powered, IOFF circuitry disables all outputs and blocks backflow current to <±5 μA. This prevents damage to upstream drivers and avoids bus contention-critical during firmware updates or modular hot-swap in telecom and industrial systems.
Can the 74AVCH4T245D,112 be used as two independent 2-bit transceivers?
Yes-the device contains two fully isolated 2-bit channels (1A/1B and 2A/2B), each with dedicated DIR and OE controls. Pins 1DIR/1OE govern channel 1 (1A1/1A2 ↔ 1B1/1B2); 2DIR/2OE govern channel 2 (2A1/2A2 ↔ 2B1/2B2), enabling flexible partitioning in multi-protocol interfaces like SPI + I²C bridging.
Is external termination required for high-speed operation?
No external termination is needed for DC-coupled operation. The device's typical output impedance is ~25 Ω (VCC = 3.3 V), and dynamic characteristics (e.g., 380 Mbit/s max rate) are validated with 15 pF load and 2 kΩ pull-up-matching standard PCB trace impedances without added resistors or capacitors.
74AVCH4T245D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AVCH
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Translation Transceiver
- Number of Elements:
- 2
- Number of Bits per Element:
- 2
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 0.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74AVCH4T245D,112 FAQ
1.How can I place an order for 74AVCH4T245D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVCH4T245D,112 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 74AVCH4T245D,112 reliable?
The price and inventory of 74AVCH4T245D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCH4T245D,112 is usually 5 days.
3.What payment methods are accepted for 74AVCH4T245D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AVCH4T245D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AVCH4T245D,112?
74AVCH4T245D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AVCH4T245D,112 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 74AVCH4T245D,112?
For technical support, including 74AVCH4T245D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCH4T245D,112 requirements.
6.How does Aetrix verify that 74AVCH4T245D,112 is sourced from the original manufacturer or authorized distributors?
All 74AVCH4T245D,112 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 74AVCH4T245D,112 meets industry standards.
7.What is the process for return or replacement of 74AVCH4T245D,112?
All 74AVCH4T245D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCH4T245D,112, 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 74AVCH4T245D,112 part is unused and in its original packaging.
Return procedure for 74AVCH4T245D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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