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

NXP Semiconductors 74LVCH16245AEVY

Name: 74LVCH16245AEVY
Brand: NXP Semiconductors
SKU: 74LVCH16245AEVY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVCH16245AEVY

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-VFBGA

Datasheet:: 74LVCH16245AEVY.pdf

Description:: IC TXRX NON-INVERT 3.6V 56VFBGA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74LVCH16245AEVY from Nexperia is a 16-bit CMOS bus transceiver with dual 8-bit directional control, 3-state outputs, 5 V-tolerant inputs (up to 5.5 V), bus hold on all data inputs, and IOFF partial power-down protection. It operates from 1.2 V to 3.6 V supply, supports mixed-voltage translation between 3.3 V and 5 V systems, and is qualified for industrial temperature range (–40 °C to +125 °C). Used in high-density PCBs for bidirectional data buffering in memory expansion and FPGA I/O interfacing.

For engineers reviewing the 74LVCH16245AEVY datasheet, 74LVCH16245AEVY pinout, 74LVCH16245AEVY application, or 74LVCH16245AEVY equivalent, key selection criteria include its dual OE/DIR control architecture, bus hold elimination of external pull-ups, IOFF-enabled safe power sequencing, Schmitt-trigger input noise immunity, and TSSOP48 package compatibility with automated SMT assembly.

Technical Context

This device implements two independent 8-bit transceiver blocks, each with dedicated direction (DIR) and output enable (OE) pins-enabling flexible byte-level control without external logic. Its bus hold circuitry actively maintains data input states at VIH/VIL thresholds (e.g., ±75 μA at VCC = 3.0 V), eliminating floating-bus risk in unconnected or tri-stated conditions.

The IOFF feature disables outputs when VCC = 0 V, blocking backflow current up to ±20 μA, critical for hot-swap and multi-rail power sequencing. Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), tolerating slow edges down to 20 ns/V transition rate at low VCC.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.2 V to 3.6 V - Enables direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic domains.
Input Voltage Range	–0.5 V to 5.5 V - Supports 5 V-tolerant operation without level shifters in mixed-supply systems.
Propagation Delay	1.0 ns to 6.0 ns (VCC = 3.0–3.6 V) - Ensures sub-6 ns timing margin for 100+ MHz bus cycles.
Bus Hold Current	±75 μA at VCC = 3.0 V - Actively sustains input state without external pull-up resistors.
IOFF Leakage	±20 μA at VCC = 0 V - Prevents damaging backfeed current during partial power-down.
ESD Rating	HBM > 2000 V, CDM > 1000 V - Meets JEDEC JS-001/JS-002 for robust board handling and assembly.
Operating Temperature	–40 °C to +125 °C - Qualified for extended industrial and under-hood embedded applications.

Pinout & Package

TSSOP48 (SOT362-1) package: 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm lead pitch, exposed thermal pad not present. Pin count and layout match JEDEC MO-153 standard for automated placement and reflow compatibility.

Pin/Terminal	Circuit Role	Design Meaning
1DIR, 2DIR	Direction control input (active HIGH)	Selects data flow direction per 8-bit bank: HIGH = A→B, LOW = B→A.
1OE, 2OE	Output enable input (active LOW)	Disables corresponding 8-bit outputs to high-impedance state when HIGH.
1A0–1A7, 2A0–2A7	Data I/O port A (side A)	First and second 8-bit bidirectional data terminals connected to controller side.
1B0–1B7, 2B0–2B7	Data I/O port B (side B)	First and second 8-bit bidirectional data terminals connected to peripheral/memory side.
VCC (pins 7,18,31,42)	Power supply	Four distributed VCC pins minimize IR drop and supply noise across wide bus.
GND (pins 4,10,15,21,28,34,39,45)	Ground reference	Eight GND pins reduce ground bounce and improve signal integrity for 16-bit switching.

Key Features

Feature	Design Value
Dual independent 8-bit control	Separate 1DIR/1OE and 2DIR/2OE allow asymmetric bus management-e.g., one bank active while other is tri-stated.
Integrated bus hold	Eliminates need for 16 external pull-up resistors on data lines, reducing BOM count and PCB area in idle or unconnected states.
IOFF partial power-down	Prevents current backflow when VCC is off, enabling safe insertion/removal in live backplanes or multi-supply systems.
Schmitt-trigger inputs	Provides 0.3 V typical hysteresis at 3.3 V, rejecting noise on slow-rising control signals (e.g., from microcontroller GPIO).
Low dynamic power	CPD = 18.5 pF (VCC = 3.3 V) enables <1 mW typical dynamic dissipation at 10 MHz toggle rate across all 16 bits.

Applications

Memory Expansion Interface

FPGA I/O Bridging

Use Scenario: Expanding SRAM or Flash memory capacity on a microcontroller-based industrial controller board with limited native address/data bus width.

IC Role / Device Role / Timing Role: Bidirectional 16-bit data buffer that translates between 3.3 V MCU bus and 5 V memory devices, synchronized to address strobes and chip enables.

Use Value: Enables direct connection without discrete level shifters; bus hold prevents data corruption during memory access gaps or reset sequences.

Use Scenario: Interfacing a Xilinx Artix-7 FPGA's 3.3 V I/O bank to legacy 5 V peripheral ICs (e.g., ADCs, DACs, display drivers) on a test instrumentation PCB.

IC Role / Device Role / Timing Role: Voltage-translating transceiver managing bidirectional data flow under FPGA-controlled DIR/OE signals, with precise timing alignment to clock domains.

Use Value: Eliminates need for 16 individual translators; IOFF allows safe FPGA reconfiguration while peripherals remain powered.

Industrial PLC Backplane

Automated Test Equipment (ATE) Fixture

Use Scenario: Isolating and buffering I/O modules on a modular PLC backplane where multiple voltage domains coexist (e.g., 2.5 V CPU, 3.3 V comms, 5 V sensors).

IC Role / Device Role / Timing Role: Zone-level bus repeater with independent enable control per module slot, supporting hot-swap via IOFF and Schmitt-trigger noise rejection.

Use Value: Reduces inter-slot crosstalk and ground bounce; bus hold maintains module presence detection during insertion/removal.

Use Scenario: Providing programmable signal routing between DUT (device under test) and ATE controller in a high-pin-count semiconductor test fixture.

IC Role / Device Role / Timing Role: Reconfigurable 16-bit data path controlled by test sequencer GPIOs, enabling flexible pass/fail signal injection and capture modes.

Use Value: Dual OE/DIR control allows real-time path reversal without FPGA reprogramming; 5.5 V tolerance accommodates test voltage margining.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bidirectional bus transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16245ADGGR	No bus hold; IOFF supported; identical pinout and VCC range (1.65–3.6 V only).	Requires external pull-ups on unused data lines; less suitable for unpopulated or dynamically reconfigured buses.	Select when cost sensitivity outweighs bus hold benefit and system design ensures stable inputs.
74ALVC16245PW	Higher speed (tpd ≤ 3.5 ns @ 3.3 V); no bus hold; 2.3–3.6 V only; TSSOP48 package.	Better for high-frequency (>100 MHz) synchronous buses but lacks 5 V tolerance and IOFF.	Choose for timing-critical applications where 5 V tolerance and power-down safety are secondary.

Compared with SN74LVC16245ADGGR and 74ALVC16245PW, the 74LVCH16245AEVY uniquely combines bus hold, full 1.2–3.6 V operation, 5.5 V input tolerance, and IOFF-making it optimal for robust, mixed-voltage, hot-pluggable industrial interfaces where reliability trumps raw speed.

Availability

74LVCH16245AEVY is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA I/O bridging, industrial PLC backplanes, and automated test equipment fixtures requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74LVCH16245AEVY 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 logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVCH series targets robust, low-power, mixed-voltage digital interfacing-designed specifically for industrial-grade reliability, hot-swap safety, and simplified BOM reduction in space-constrained embedded systems.

FAQ

Does 74LVCH16245AEVY support true 5 V logic levels on outputs?

No. Outputs swing rail-to-rail within the VCC supply range (1.2 V to 3.6 V), not to 5 V. However, inputs tolerate up to 5.5 V regardless of VCC-enabling safe connection to 5 V drivers while outputting only up to VCC. This makes it a translator, not a level shifter with 5 V outputs.

Can bus hold be disabled or overridden?

Bus hold is always active on data inputs (1A0–1A7, 1B0–1B7, 2A0–2A7, 2B0–2B7) and cannot be disabled. It is automatically disabled when input voltage exceeds VCC (e.g., during 5.5 V input application), allowing valid overvoltage signaling without conflict.

What is the maximum data rate supported by this transceiver?

While not specified as a data rate, the propagation delay (tpd ≤ 6.0 ns at VCC = 3.6 V) supports reliable operation up to ~80 MHz for asynchronous buses and ~40 MHz for synchronous buses with setup/hold margins. Actual rate depends on load capacitance and PCB routing.

Is thermal pad required for TSSOP48 (SOT362-1) package?

No. The SOT362-1 package used for 74LVCH16245AEVY has no exposed thermal pad. Thermal performance relies on copper pour under the body and the eight GND pins; recommended PCB layout uses solid inner-layer GND planes and ≥0.5 mm trace width for all VCC/GND connections.

74LVCH16245AEVY Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74LVCH

Package/Case:: 56-VFBGA

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:: 24mA, 24mA

Voltage - Supply:: 1.2V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-VFBGA (4.5x7)

74LVCH16245AEVY FAQ

1.How can I place an order for 74LVCH16245AEVY through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVCH16245AEVY 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 74LVCH16245AEVY reliable?

The price and inventory of 74LVCH16245AEVY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH16245AEVY is usually 5 days.

3.What payment methods are accepted for 74LVCH16245AEVY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH16245AEVY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVCH16245AEVY?

74LVCH16245AEVY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVCH16245AEVY 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 74LVCH16245AEVY?

For technical support, including 74LVCH16245AEVY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH16245AEVY requirements.

6.How does Aetrix verify that 74LVCH16245AEVY is sourced from the original manufacturer or authorized distributors?

All 74LVCH16245AEVY 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 74LVCH16245AEVY meets industry standards.

7.What is the process for return or replacement of 74LVCH16245AEVY?

All 74LVCH16245AEVY units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH16245AEVY, 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 74LVCH16245AEVY part is unused and in its original packaging.

Return procedure for 74LVCH16245AEVY:

1.Submit a request within 90 days.

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

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