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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

NXP Semiconductors 74AVCH16T245BQ,518

Name: 74AVCH16T245BQ,518
Brand: NXP Semiconductors
SKU: 74AVCH16T245BQ,518
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AVCH16T245BQ,518

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 60-UFQFN Dual Rows, Exposed Pad

Datasheet:: 74AVCH16T245BQ,518.pdf

Description:: IC TRANSLATOR BIDIR 60HUQFNU

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Product details

Overview

74AVCH16T245BQ,518 from NXP Semiconductors is a 16-bit dual-supply voltage-translating transceiver with bidirectional level shifting, 3-state outputs, and independent VCC(A)/VCC(B) supplies (0.8 V to 3.6 V). It supports two 8-bit or one 16-bit data path, features bus-hold circuitry on all I/Os, and operates across −40 °C to +125 °C for mixed-voltage system interconnect in industrial and automotive control modules.

For engineers reviewing the 74AVCH16T245BQ,518 datasheet, 74AVCH16T245BQ,518 pinout, 74AVCH16T245BQ,518 application, or 74AVCH16T245BQ,518 equivalent, key selection criteria include bidirectional translation between 0.8 V/1.2 V/1.5 V/1.8 V/2.5 V/3.3 V domains, IOFF-enabled partial power-down, suspend-mode behavior when either supply is grounded, and HXQFN60U thermal-enhanced packaging for high-density PCB layouts.

Technical Context

This device implements dual-voltage domain logic translation using separate A- and B-side input/output buffers referenced to VCC(A) and VCC(B), respectively. Direction control (nDIR) and output enable (nOE) are referenced solely to VCC(A), while all nBn pins are referenced to VCC(B). The IOFF circuit disables outputs during power-down to prevent backflow current, and bus-hold circuitry actively maintains valid logic levels on floating inputs without external resistors.

Suspend mode activates when either VCC(A) or VCC(B) is at GND, forcing both A- and B-side outputs into high-impedance OFF-state regardless of nOE/nDIR states. The device complies with multiple JEDEC standards (JESD8-12 through JESD8-B) for interoperability across low-voltage logic families and supports maximum data rates up to 380 Mbit/s for ≥1.8 V to 3.3 V translation.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC(A) Range	0.8 V to 3.6 V - enables translation from ultra-low-voltage cores (e.g., 0.8 V FPGA I/O) to higher-voltage peripherals
VCC(B) Range	0.8 V to 3.6 V - supports symmetric or asymmetric voltage pairing (e.g., 1.2 V ↔ 3.3 V) without level-shifter redesign
Max Data Rate	380 Mbit/s - sustains high-speed DDR memory or processor bus interfacing between 1.8 V and 3.3 V domains
IOFF Leakage	±1 μA max - ensures safe hot-plug operation and prevents damage during partial power-down sequences
Bus-Hold Current	±100 μA at 3.0 V - eliminates need for external pull-up/down resistors on unused I/O lines, reducing BOM count
Operating Temp	−40 °C to +125 °C - qualified for under-hood automotive ECUs and industrial motor drives requiring extended thermal range
ESD Rating	HBM >8000 V - provides robust handling in automated assembly and field-replaceable module environments

Pinout & Package

74AVCH16T245BQ,518 uses the HXQFN60U package: plastic thermal-enhanced extremely thin quad flat package, no leads, 60 terminals, UTLP-based, body size 4 × 6 × 0.5 mm (SOT1134-1).

Pin/Terminal	Circuit Role	Design Meaning
A1, A13	1DIR, 2DIR	Direction control inputs referenced to VCC(A); HIGH = A→B, LOW = B→A
A29, A14	1OE, 2OE	Active-LOW output enable inputs referenced to VCC(A); HIGH = high-impedance state
A1, A10	VCC(B)	Supply for B-side I/Os; sets voltage reference for all nBn pins and internal B-buffer thresholds
A17, A26	VCC(A)	Supply for A-side I/Os, nDIR, and nOE; defines logic thresholds and drive strength for A-port and controls
A32, A3, A8, A11, A16, A19, A24, A27	GND	Eight dedicated ground terminals - ensure low-impedance return paths and minimize ground bounce in high-speed switching
B20, A31, D5, D1, A2, B2, B3, A5	1B1–1B8	B-side data I/Os referenced to VCC(B); support bidirectional flow under 1DIR/1OE control
A6, B5, B6, A9, D2, D6, A12, B8	2B1–2B8	Second B-side data I/O bank - enables independent 8-bit channel operation or full 16-bit bus extension
B18, A28, D8, D4, A25, B16, B15, A22	1A1–1A8	A-side data I/Os referenced to VCC(A); driven by or sourced from A-domain logic
A21, B13, B12, A18, D3, D7, A15, B10	2A1–2A8	Second A-side data I/O bank - allows split-bus configuration (e.g., two independent 8-bit peripheral interfaces)

Key Features

Feature	Design Value
Dual independent supply rails	VCC(A) and VCC(B) each independently configurable from 0.8 V to 3.6 V - enables seamless interface between heterogeneous voltage domains without external regulators
IOFF partial power-down	Outputs automatically disable with zero backflow current when either VCC is powered down - critical for PCIe hot-plug, battery-backed subsystems, and dynamic power gating
Integrated bus-hold circuitry	Active on all 32 I/O pins - maintains last-valid logic state on floating inputs, eliminating 32 external pull resistors and associated layout area and leakage
Suspend mode	Both A and B ports enter high-impedance state if either VCC(A) or VCC(B) = GND - guarantees isolation during brown-out or staged power sequencing
JEDEC compliance	Meets JESD8-12 through JESD8-B standards - ensures interoperability with industry-standard 0.8 V to 3.6 V logic families including AVCMOS, LVT, and ALVT

Applications

Industrial PLC Backplane Interface	Automotive ADAS Sensor Hub
Use Scenario: Interfacing a 1.2 V FPGA-based motion controller with legacy 2.5 V I/O modules on a modular PLC backplane. IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling real-time command/response exchange across voltage domains while maintaining signal integrity at 200 Mbit/s. Use Value: Eliminates discrete level-shifter arrays and reduces PCB layer count by consolidating 16-channel translation into single HXQFN60U package with thermal efficiency.	Use Scenario: Connecting 1.8 V camera sensor outputs to a 3.3 V image processing SoC within an automotive surround-view ECU. IC Role / Device Role / Timing Role: High-speed, low-jitter data bridge supporting MIPI CSI-2 parallel emulation with precise timing control via nDIR/nOE. Use Value: Enables direct sensor-to-SoC connection without clock-domain crossing logic; bus-hold prevents metastability during sensor power-up/down sequences.
Server Memory Subsystem	Medical Imaging Data Acquisition
Use Scenario: Translating control signals between a 0.8 V ASIC memory controller and 1.5 V DDR4 register clocks in a high-density server DIMM module. IC Role / Device Role / Timing Role: Low-latency, rail-to-rail bidirectional transceiver with propagation delay ≤5.9 ns (1.8 V → 2.5 V) for timing-critical register access. Use Value: Meets tight setup/hold margins for DDR4 RDIMM RCD timing; IOFF prevents current injection during memory training sequences.	Use Scenario: Isolating and translating analog front-end ADC data streams (1.2 V LVDS) to a 3.3 V FPGA-based reconstruction engine in portable ultrasound equipment. IC Role / Device Role / Timing Role: Voltage-translating buffer with suspend-mode isolation during standby to meet IEC 60601-1 leakage current requirements. Use Value: Achieves <5 μA total off-state leakage per port - satisfies medical-grade patient-isolation safety thresholds without added optocouplers.

Industrial PLC Backplane Interface

Automotive ADAS Sensor Hub

Use Scenario: Interfacing a 1.2 V FPGA-based motion controller with legacy 2.5 V I/O modules on a modular PLC backplane.

IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling real-time command/response exchange across voltage domains while maintaining signal integrity at 200 Mbit/s.

Use Value: Eliminates discrete level-shifter arrays and reduces PCB layer count by consolidating 16-channel translation into single HXQFN60U package with thermal efficiency.

Use Scenario: Connecting 1.8 V camera sensor outputs to a 3.3 V image processing SoC within an automotive surround-view ECU.

IC Role / Device Role / Timing Role: High-speed, low-jitter data bridge supporting MIPI CSI-2 parallel emulation with precise timing control via nDIR/nOE.

Use Value: Enables direct sensor-to-SoC connection without clock-domain crossing logic; bus-hold prevents metastability during sensor power-up/down sequences.

Server Memory Subsystem

Medical Imaging Data Acquisition

Use Scenario: Translating control signals between a 0.8 V ASIC memory controller and 1.5 V DDR4 register clocks in a high-density server DIMM module.

IC Role / Device Role / Timing Role: Low-latency, rail-to-rail bidirectional transceiver with propagation delay ≤5.9 ns (1.8 V → 2.5 V) for timing-critical register access.

Use Value: Meets tight setup/hold margins for DDR4 RDIMM RCD timing; IOFF prevents current injection during memory training sequences.

Use Scenario: Isolating and translating analog front-end ADC data streams (1.2 V LVDS) to a 3.3 V FPGA-based reconstruction engine in portable ultrasound equipment.

IC Role / Device Role / Timing Role: Voltage-translating buffer with suspend-mode isolation during standby to meet IEC 60601-1 leakage current requirements.

Use Value: Achieves <5 μA total off-state leakage per port - satisfies medical-grade patient-isolation safety thresholds without added optocouplers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional voltage translation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVCH16T245DGGR	TSSOP48 package (6.1 mm width); lower thermal performance; no exposed thermal pad	Preferred for cost-sensitive, non-thermally constrained industrial boards where board space is less critical	Select when thermal dissipation <500 mW suffices and reflow compatibility with legacy TSSOP footprints is required
TXB0108PWR	8-bit only; auto-direction sensing (no nDIR pin); max 3.3 V VCCA/VCCB; no suspend mode	Suitable for simple microcontroller GPIO expansion but lacks dual 8-bit independent control and industrial temperature range	Choose only for low-pin-count, auto-sensing applications where 16-bit width and −40 °C to +125 °C operation are not required

Compared with SN74AVCH16T245DGGR and TXB0108PWR, the 74AVCH16T245BQ,518 delivers superior thermal management via its HXQFN60U exposed-pad construction, supports true dual 8-bit independent direction control, and guarantees suspend-mode behavior essential for automotive and medical systems with strict power sequencing requirements.

Availability

74AVCH16T245BQ,518 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive ADAS sensor hubs, and medical imaging data acquisition systems requiring stable component supply across extended temperature and long product lifecycles.

Supply support for 74AVCH16T245BQ,518 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

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in high-performance mixed-signal ICs.

The 74AVCH16T245BQ,518 belongs to NXP's advanced voltage translation portfolio, designed specifically for robust, high-speed interconnection between heterogeneous voltage domains in mission-critical embedded systems.

FAQ

What voltage combinations does the 74AVCH16T245BQ,518 support for bidirectional translation?

The 74AVCH16T245BQ,518 supports any combination of VCC(A) and VCC(B) between 0.8 V and 3.6 V, including 0.8 V ↔ 1.2 V, 1.5 V ↔ 2.5 V, 1.8 V ↔ 3.3 V, and asymmetric pairings like 1.2 V ↔ 3.3 V. Translation is fully bidirectional and direction-controlled via the nDIR input referenced to VCC(A).

How does the IOFF feature protect the 74AVCH16T245BQ,518 during partial power-down?

The IOFF circuitry in the 74AVCH16T245BQ,518 disables all outputs when either VCC(A) or VCC(B) is at GND, preventing damaging backflow current through the device. This ensures safe operation during hot-swap events, staged power sequencing, or fault conditions where one supply rail collapses while the other remains active.

Does the 74AVCH16T245BQ,518 require external pull-up or pull-down resistors on unused I/O pins?

No. The 74AVCH16T245BQ,518 integrates active bus-hold circuitry on all 32 I/O pins, which maintains the last-valid logic state on floating inputs. This eliminates the need for external pull resistors, reducing BOM cost, PCB area, and potential signal integrity issues caused by resistor parasitics.

What is the maximum data rate supported by the 74AVCH16T245BQ,518 at different voltage translations?

The 74AVCH16T245BQ,518 supports up to 380 Mbit/s for ≥1.8 V to 3.3 V translation, 200 Mbit/s for ≥1.1 V to 3.3 V, 200 Mbit/s for ≥1.1 V to 2.5 V, 200 Mbit/s for ≥1.1 V to 1.8 V, 150 Mbit/s for ≥1.1 V to 1.5 V, and 100 Mbit/s for ≥1.1 V to 1.2 V - all verified across −40 °C to +125 °C.

How does suspend mode behave in the 74AVCH16T245BQ,518 when one supply is grounded?

In suspend mode - triggered when either VCC(A) or VCC(B) is at GND - both A- and B-side outputs of the 74AVCH16T245BQ,518 enter high-impedance OFF-state regardless of nOE or nDIR states. This provides guaranteed isolation between powered and unpowered domains, meeting automotive and industrial safety requirements for power sequencing.

74AVCH16T245BQ,518 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74AVCH

Package/Case:: 60-UFQFN Dual Rows, Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Translation Transceiver

Number of Elements:: 2

Number of Bits per Element:: 8

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 12mA, 12mA

Voltage - Supply:: 0.8V ~ 3.6V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 60-HUQFNU (4x6)

74AVCH16T245BQ,518 FAQ

1.How can I place an order for 74AVCH16T245BQ,518 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AVCH16T245BQ,518 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 74AVCH16T245BQ,518 reliable?

The price and inventory of 74AVCH16T245BQ,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCH16T245BQ,518 is usually 5 days.

3.What payment methods are accepted for 74AVCH16T245BQ,518?

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4.How is shipping managed for 74AVCH16T245BQ,518?

74AVCH16T245BQ,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AVCH16T245BQ,518 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 74AVCH16T245BQ,518?

For technical support, including 74AVCH16T245BQ,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCH16T245BQ,518 requirements.

6.How does Aetrix verify that 74AVCH16T245BQ,518 is sourced from the original manufacturer or authorized distributors?

All 74AVCH16T245BQ,518 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 74AVCH16T245BQ,518 meets industry standards.

7.What is the process for return or replacement of 74AVCH16T245BQ,518?

All 74AVCH16T245BQ,518 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCH16T245BQ,518, 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 74AVCH16T245BQ,518 part is unused and in its original packaging.

Return procedure for 74AVCH16T245BQ,518:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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