Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics 74VCX16245LBR

Name: 74VCX16245LBR
Brand: STMicroelectronics
SKU: 74VCX16245LBR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74VCX16245LBR

Manufacturer:: STMicroelectronics

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 54-TFBGA

Datasheet:: 74VCX16245LBR.pdf

Description:: IC TXRX NON-INVERT 3.6V 54TFBGA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,991

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

74VCX16245LBR from STMicroelectronics is a low-voltage CMOS 16-bit bus transceiver (3-state) with dual 8-bit bidirectional data paths, 3.6V-tolerant I/O, 2.5 ns max propagation delay at 3.0–3.6V, and ±24 mA output drive at VCC = 3.0V. It enables asynchronous two-way communication between voltage-differentiated buses in portable computing and low-power embedded systems.

For engineers reviewing the 74VCX16245LBR datasheet, 74VCX16245LBR pinout, 74VCX16245LBR application, or 74VCX16245LBR equivalent, key selection criteria include 1.8–3.6V operating range, DIR-controlled directionality, dual independent enable inputs (1G/2G), high-impedance isolation during power-down, and TFBGA54 package compatibility with space-constrained PCB layouts.

Technical Context

This device implements two independent 8-bit transceiver channels (1A↔1B and 2A↔2B), each controlled by dedicated DIR and G inputs. Directional control is synchronous per channel: DIR = LOW enables A→B flow; DIR = HIGH enables B→A flow.

Input and output structures incorporate robust ESD protection (HBM >2000V, MM >200V) and latch-up immunity (>300 mA per JESD17). All I/O pins tolerate up to 3.6V regardless of VCC (1.8–3.6V), enabling safe interfacing with higher-voltage logic domains without level shifters.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.8V to 3.6V - supports single-rail operation across modern low-voltage SoC interfaces
Max Propagation Delay	2.5 ns at VCC = 3.0–3.6V - enables sub-400 MHz bus timing in high-speed data transfer
Output Drive Strength	±24 mA at VCC = 3.0V - drives 50 Ω transmission lines or multiple CMOS loads without external buffers
I/O Voltage Tolerance	3.6V tolerant on all inputs/outputs - eliminates need for discrete level translators when interfacing with 3.3V peripherals
Power-Down Leakage	10 µA max at VCC = 0V - ensures minimal current draw during system sleep states
Operating Temperature	−55°C to +125°C - qualified for industrial and extended-temperature embedded applications
Input Capacitance	4 pF - reduces capacitive loading on driving sources, preserving signal integrity at high frequencies

Pinout & Package

74VCX16245LBR uses a 54-ball TFBGA package (7.9 × 5.5 mm, 0.8 mm pitch) with exposed thermal pad. Pin mapping follows JEDEC MO-245 standard; ball A1 marked by corner cutout.

Pin/Terminal	Circuit Role	Design Meaning
1DIR, 2DIR	Direction Control Input	Active-HIGH logic selects B→A data flow; LOW enables A→B - enables independent bidirectional control per 8-bit channel
1G, 2G	Output Enable Input	Active-LOW enables transceiver; HIGH forces outputs into high-impedance state - provides per-channel bus isolation
1A1–1A8, 2A1–2A8	Port A Data Terminals	First 8-bit bus interface - connects to microcontroller or ASIC data bus side A
1B1–1B8, 2B1–2B8	Port B Data Terminals	Second 8-bit bus interface - connects to memory, peripheral, or FPGA side B
VCC	Positive Supply	Single 1.8–3.6V supply powers both I/O and core logic - eliminates dual-supply routing complexity
GND	Ground Reference	Eight dedicated ground balls (A2, A5, B3, B4, H3, H4, J2, J5) reduce ground bounce and improve noise immunity

Key Features

Feature	Design Value
3.6V-Tolerant I/O	Operates at 1.8V VCC while safely accepting and driving 3.6V signals - enables mixed-voltage system integration without external translators
Symmetrical Output Drive	\|IOH\| = IOL = 24 mA min at 3.0V - ensures matched rise/fall times and reduced signal skew across data bus
Power-Down Protection	Inputs and outputs remain high-impedance and ESD-protected even when VCC = 0V - prevents back-driving and damage during hot-swap or partial power loss
Latch-Up Immunity	>300 mA per JESD17 - guarantees robust operation under transient overvoltage or ground-bounce conditions in noisy industrial environments
Low Dynamic Noise	VOLP = 0.25 V (max) at 1.8V - minimizes simultaneous switching output (SSO) noise affecting adjacent analog or RF circuits

Applications

Mobile Baseband Interface

Industrial PLC Backplane

Use Scenario: Bidirectional data exchange between 1.8V application processor and 3.3V modem baseband IC in LTE/5G handset designs.

IC Role / Device Role / Timing Role: Voltage-tolerant bus transceiver providing direction-controlled, isolated data path with sub-3 ns propagation delay.

Use Value: Eliminates discrete level-shifter components, reduces PCB area by 35%, and maintains timing margin for 100 MHz DDR-like burst transfers.

Use Scenario: Isolating CPU and I/O module buses in modular programmable logic controller chassis with mixed 2.5V/3.3V modules.

IC Role / Device Role / Timing Role: Dual-channel 3-state transceiver enabling hot-swap-safe bus arbitration and fault containment between subsystems.

Use Value: Per-channel 1G/2G enables selective bus disable during firmware updates; 125°C rating ensures reliability in uncooled control cabinets.

Automotive ADAS Sensor Hub

Low-Power IoT Gateway

Use Scenario: Interfacing 1.8V image signal processor with 3.3V radar preprocessor in automotive surround-view camera fusion unit.

IC Role / Device Role / Timing Role: High-speed, ESD-hardened transceiver supporting ASIL-B functional safety requirements via latch-up immunity and wide temp range.

Use Value: 2000V HBM ESD rating meets ISO 10605 requirements; 3.6V tolerance avoids voltage translation in harsh EMC environments.

Use Scenario: Connecting 1.8V microcontroller UART/SPI to 3.3V wireless SoC (Wi-Fi/BLE) in battery-powered smart meter gateway.

IC Role / Device Role / Timing Role: Low-quiescent-current (20 µA) transceiver enabling deep-sleep mode while maintaining bus isolation.

Use Value: Power-down leakage ≤10 µA extends battery life beyond 10 years in maintenance-free deployments; TFBGA54 footprint saves 60% board space vs TSSOP.

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	TSSOP-48 only; 3.6V I/O tolerance not guaranteed at VCC < 2.7V; max tPD = 3.9 ns at 3.3V	Lacks full 1.8V–3.6V interoperability - requires ≥2.7V VCC for reliable 3.6V I/O operation	Select if TSSOP packaging and TI ecosystem compatibility are prioritized over ultra-low-voltage operation
74ALVC16245PW	Only rated for 2.3–3.6V VCC; no 1.8V support; lower drive (±24 mA only at 3.3V)	Not suitable for 1.8V core logic domains - incompatible with latest ultra-low-power MCUs	Choose only for legacy 2.5V/3.3V-only systems where 1.8V operation is unnecessary

Compared with SN74LVC16245ADGGR and 74ALVC16245PW, the 74VCX16245LBR uniquely supports full 1.8V operation with guaranteed 3.6V I/O tolerance and 2.5 ns speed - making it the sole option for next-gen energy-harvesting and battery-critical designs requiring both voltage flexibility and timing headroom.

Availability

74VCX16245LBR is available at Aetrix Electronics and suitable for mobile baseband interfaces, industrial PLC backplanes, automotive ADAS sensor hubs, and low-power IoT gateways requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74VCX16245LBR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in automotive, industrial, and power management ICs with strong emphasis on reliability and automotive qualification.

The VCX logic family targets ultra-low-voltage, high-speed digital interface applications - specifically engineered for seamless interoperability between 1.8V–3.6V domains in portable, industrial, and automotive electronics.

FAQ

Can 74VCX16245LBR operate with VCC = 1.8V while driving 3.6V-tolerant loads?

Yes. The device guarantees full 3.6V I/O tolerance across its entire 1.8V–3.6V VCC range. At VCC = 1.8V, outputs swing rail-to-rail (0V to 1.8V) but withstand up to 3.6V applied externally without damage or leakage - confirmed by absolute maximum ratings and DC specs tables.

What is the recommended handling for unused bus terminals in high-impedance state?

All floating bus terminals (A or B ports) must be actively held HIGH or LOW using pull-up/pull-down resistors. Leaving them unconnected risks undefined logic states, increased EMI susceptibility, and potential shoot-through current during transitions - per manufacturer guidance on page 3 of the datasheet.

Does 74VCX16245LBR support hot insertion when VCC = 0V?

Yes. With VCC = 0V, all I/O pins enter a high-impedance, ESD-protected state with ≤10 µA off-state leakage. This allows safe connection/disconnection in live backplane systems, provided input voltages stay within −0.5V to +4.6V absolute maximum limits.

How does output skew impact 16-bit parallel bus timing?

Maximum output-to-output skew is 0.5 ns across all voltage ranges - meaning any two outputs switching simultaneously will deviate by ≤0.5 ns. This ensures setup/hold margins remain intact for 16-bit wide data captures at up to 200 MHz clock rates, as verified in AC electrical characteristics on page 7.

74VCX16245LBR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74VCX

Package/Case:: 54-TFBGA

Packaging:: Tape & Reel (TR)

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:: 1.8V ~ 3.6V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 54-TFBGA (8x5.5)

74VCX16245LBR FAQ

1.How can I place an order for 74VCX16245LBR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74VCX16245LBR 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 74VCX16245LBR reliable?

The price and inventory of 74VCX16245LBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VCX16245LBR is usually 5 days.

3.What payment methods are accepted for 74VCX16245LBR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VCX16245LBR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74VCX16245LBR?

74VCX16245LBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74VCX16245LBR 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 74VCX16245LBR?

For technical support, including 74VCX16245LBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VCX16245LBR requirements.

6.How does Aetrix verify that 74VCX16245LBR is sourced from the original manufacturer or authorized distributors?

All 74VCX16245LBR 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 74VCX16245LBR meets industry standards.

7.What is the process for return or replacement of 74VCX16245LBR?

All 74VCX16245LBR units undergo pre-shipment inspection (PSI). If there is an issue with 74VCX16245LBR, 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 74VCX16245LBR part is unused and in its original packaging.

Return procedure for 74VCX16245LBR:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…