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

onsemi 74LCXR162245MTD

Name: 74LCXR162245MTD
Brand: onsemi
SKU: 74LCXR162245MTD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74LCXR162245MTD

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-TFSOP (0.240", 6.10mm Width)

Datasheet:: 74LCXR162245MTD.pdf

Description:: IC TXRX NON-INVERT 3.6V 48TSSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,481

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

Product details

Overview

74LCXR162245MTD from ON Semiconductor is a low-voltage 16-bit bidirectional transceiver with 5V-tolerant I/O, 2.3–3.6V V_CC operation, 5.3 ns max propagation delay at 3.3V, and integrated 26 Ω series output resistors for EMI suppression-used in voltage-level translating bus interfaces between 2.5/3.3V logic and 5V peripherals.

For engineers reviewing the 74LCXR162245MTD datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional flow-through pinout, byte-wise direction control (T/R), independent OE per byte, 5V tolerance without external level shifters, and built-in series termination for clean signal integrity in high-speed digital backplanes and memory expansion subsystems.

Technical Context

The 74LCXR162245MTD implements two independent 8-bit bidirectional data paths (A0–A7/B0–B7 and A8–A15/B8–B15), each controlled by dedicated T/R and OE inputs-enabling flexible half-duplex bus arbitration. Its CMOS design supports live insertion/withdrawal via power-down high-impedance I/O states when V_CC = 0V.

All 32 I/O pins feature 5V tolerance across 2.3–3.6V V_CC, with guaranteed DC input voltage range of 0–5.5V and output drive capability of ±12 mA at V_CC = 3.0V. Propagation delay skew is limited to 1.0 ns between any two outputs switching in the same direction.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3 V to 3.6 V - Enables direct interface with 2.5V and 3.3V core logic while maintaining compatibility with legacy 5V signaling environments.
Propagation Delay t_PD	5.3 ns max at V_CC = 3.3V - Supports >100 MHz bus clocking in synchronous data transfer applications without timing closure issues.
I/O Voltage Tolerance	0 V to 5.5 V - Allows safe connection to 5V buses without external clamping diodes or level translators, reducing BOM count and layout complexity.
Output Series Resistance	26 Ω nominal - Integrated resistor minimizes overshoot/undershoot on PCB traces up to 10 cm, eliminating need for discrete series termination.
3-STATE Leakage I_OZ	±5.0 µA max - Ensures minimal current draw during bus isolation, critical for low-power standby modes in portable and embedded systems.
ESD Rating (HBM)	2000 V - Meets industrial-grade robustness requirements for handling and board assembly without additional protection circuitry.

Pinout & Package

74LCXR162245MTD is housed in a 48-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 6.1 mm wide, with 0.5 mm lead pitch and exposed pad not present. Pinout follows flow-through architecture to minimize trace crossovers on dense PCBs.

Pin/Terminal	Circuit Role	Design Meaning
OE1, OE2	Byte Output Enable Inputs	Active-low enables/disables 3-STATE on respective 8-bit port pairs; allows independent bus arbitration per byte lane.
T/R1, T/R2	Byte Direction Control Inputs	High = A→B data flow; Low = B→A flow; enables dynamic bus direction reversal without protocol overhead.
A0–A15	Side A Bidirectional I/O	Connects to local low-voltage domain (e.g., FPGA I/O bank); tolerates 5V inputs even when V_CC = 2.5V.
B0–B15	Side B Bidirectional I/O	Interfaces to external 5V subsystems (e.g., legacy peripherals, EEPROMs, or ASICs) with no level-shifting components.
V_CC, GND	Power and Ground	Two V_CC and two GND pins reduce supply impedance and improve noise immunity in high-speed switching.

Key Features

Feature	Design Value
5V-tolerant I/O	Operates safely with 0–5.5V signals on all A/B pins regardless of V_CC = 2.3–3.6V - eliminates external voltage translators in mixed-supply systems.
Integrated 26 Ω series resistors	Reduces signal reflections and EMI emissions on PCB traces up to 10 cm length - avoids discrete 22–33 Ω resistors per line and saves ~32 passives.
Byte-wise control (OE + T/R)	Enables partial bus isolation and direction switching - supports DDR-like burst transfers where upper/lower bytes operate independently.
Live insertion support	Power-down high-impedance I/O state ensures no bus contention during hot-plug events - required for modular backplane and card-edge applications.
Latch-up immunity >500 mA	Guarantees robust operation under transient overvoltage or ground bounce conditions - meets stringent industrial reliability standards.

Applications

Memory Expansion Interface	Industrial Backplane Bus
Use Scenario: Interfacing a 3.3V FPGA to legacy 5V SRAM or Flash memory modules on a single PCB. IC Role / Device Role / Timing Role: Bidirectional voltage-translating transceiver managing address/data/control lines with precise timing alignment and slew control. Use Value: Eliminates discrete level shifters and series resistors, reducing component count by ≥34 parts and improving signal integrity margin by 2.1 ns on t_PD skew-critical paths.	Use Scenario: Hot-swappable module communication in programmable logic controller (PLC) chassis with mixed 2.5V/3.3V and 5V subsystems. IC Role / Device Role / Timing Role: Isolating and translating control/status signals between main controller and field I/O modules during live insertion. Use Value: Enables zero-bus-contention hot-swap via power-down high-Z I/O and guarantees 2000V HBM ESD protection for field-replaceable units.
FPGA-to-ASIC Bridge	Embedded Test Access Port
Use Scenario: Connecting a 2.5V FPGA configuration interface to a 5V ASIC JTAG or boundary-scan chain. IC Role / Device Role / Timing Role: Level-translating bidirectional serial path with sub-6 ns propagation delay to meet JTAG TCK setup/hold timing. Use Value: Maintains full IEEE 1149.1 compliance without adding delay-inducing buffers or compromising test clock frequency up to 25 MHz.	Use Scenario: Providing isolated, 5V-tolerant access to internal debug registers in a 3.3V SoC-based medical device during production test. IC Role / Device Role / Timing Role: Controlled-direction transceiver enabling secure read/write access to diagnostic ports while preventing back-drive into core logic. Use Value: Prevents latch-up risk during test probe contact via 500 mA latch-up immunity and eliminates need for external isolation switches.

Memory Expansion Interface

Industrial Backplane Bus

Use Scenario: Interfacing a 3.3V FPGA to legacy 5V SRAM or Flash memory modules on a single PCB.

IC Role / Device Role / Timing Role: Bidirectional voltage-translating transceiver managing address/data/control lines with precise timing alignment and slew control.

Use Value: Eliminates discrete level shifters and series resistors, reducing component count by ≥34 parts and improving signal integrity margin by 2.1 ns on t_PD skew-critical paths.

Use Scenario: Hot-swappable module communication in programmable logic controller (PLC) chassis with mixed 2.5V/3.3V and 5V subsystems.

IC Role / Device Role / Timing Role: Isolating and translating control/status signals between main controller and field I/O modules during live insertion.

Use Value: Enables zero-bus-contention hot-swap via power-down high-Z I/O and guarantees 2000V HBM ESD protection for field-replaceable units.

FPGA-to-ASIC Bridge

Embedded Test Access Port

Use Scenario: Connecting a 2.5V FPGA configuration interface to a 5V ASIC JTAG or boundary-scan chain.

IC Role / Device Role / Timing Role: Level-translating bidirectional serial path with sub-6 ns propagation delay to meet JTAG TCK setup/hold timing.

Use Value: Maintains full IEEE 1149.1 compliance without adding delay-inducing buffers or compromising test clock frequency up to 25 MHz.

Use Scenario: Providing isolated, 5V-tolerant access to internal debug registers in a 3.3V SoC-based medical device during production test.

IC Role / Device Role / Timing Role: Controlled-direction transceiver enabling secure read/write access to diagnostic ports while preventing back-drive into core logic.

Use Value: Prevents latch-up risk during test probe contact via 500 mA latch-up immunity and eliminates need for external isolation switches.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional voltage-translating transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16245ADGGR	No integrated series resistors; 3.6V max V_CC; 3.3V-only I/O tolerance (not 5V tolerant)	Requires external 22–33 Ω series resistors and clamping diodes for 5V bus interfacing	Select only if operating exclusively in 3.3V-only systems with no 5V exposure and external termination is acceptable.
74ALVC162245PW	Higher ICC (max 40 µA vs. 20 µA); same 5V tolerance but no built-in 26 Ω resistors	Needs discrete termination and has higher static power in always-on monitoring circuits	Prefer 74LCXR162245MTD for low-power, space-constrained designs requiring integrated EMI suppression.

Compared with SN74LVC16245ADGGR and 74ALVC162245PW, the 74LCXR162245MTD uniquely combines 5V tolerance, integrated 26 Ω output resistors, and 20 µA quiescent current-reducing component count, PCB area, and EMI filtering effort in mixed-voltage bus bridging.

Availability

74LCXR162245MTD is available at Aetrix Electronics and suitable for memory expansion interfaces, industrial backplane buses, FPGA-to-ASIC bridges, and embedded test access ports requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.

Supply support for 74LCXR162245MTD 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

ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, cloud, and consumer markets.

The 74LCXR162245MTD belongs to the LCX family of advanced CMOS logic devices designed specifically for low-voltage, high-speed, mixed-supply system interfacing-with emphasis on 5V-tolerant I/O, EMI reduction, and live-insertion reliability.

FAQ

What is the maximum operating temperature range for the 74LCXR162245MTD?

The 74LCXR162245MTD is specified for free-air operating temperatures from −40°C to +85°C. This range is validated across all electrical parameters including propagation delay, output drive strength, and leakage current, making it suitable for industrial and extended-temperature embedded applications without derating.

Does the 74LCXR162245MTD require external pull-up resistors on OE or T/R inputs?

No-OE and T/R inputs of the 74LCXR162245MTD are CMOS-compatible with rail-to-rail logic thresholds and do not require external pull-ups for normal operation. However, per Note 1 in the datasheet, a pull-up on OE is recommended during power-up/down sequencing to guarantee high-impedance state before V_CC stabilizes.

Can the 74LCXR162245MTD be used in a unidirectional configuration?

Yes-the 74LCXR162245MTD supports unidirectional operation by fixing T/R inputs to either HIGH or LOW and using OE to enable/disable the path. For example, tying T/R1 = HIGH configures A0–A7 → B0–B7 only, while OE1 controls enablement-retaining all timing and drive specifications.

What is the meaning of "flow-through pinout" for the 74LCXR162245MTD?

The flow-through pinout of the 74LCXR162245MTD arranges A0–A15 and B0–B15 sequentially along opposite sides of the TSSOP package (e.g., A0–A7 on left, B0–B7 on right), enabling straight PCB trace routing with minimal layer transitions-reducing crosstalk and simplifying layout for high-density memory or bus interfaces.

How does the 26 Ω series resistance in the 74LCXR162245MTD affect signal rise/fall times?

The 26 Ω nominal series resistance in the 74LCXR162245MTD dampens ringing and reduces edge-induced EMI without significantly degrading edge rates: measured t_r/t_f remains ≤3.2 ns (20%–80%) into 50 pF load at V_CC = 3.3V-within timing budgets for 100 MHz synchronous buses.

74LCXR162245MTD Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74LCXR

Package/Case:: 48-TFSOP (0.240", 6.10mm Width)

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:: 12mA, 12mA

Voltage - Supply:: 2V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74LCXR162245MTD FAQ

1.How can I place an order for 74LCXR162245MTD through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LCXR162245MTD 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 74LCXR162245MTD reliable?

The price and inventory of 74LCXR162245MTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCXR162245MTD is usually 5 days.

3.What payment methods are accepted for 74LCXR162245MTD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCXR162245MTD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LCXR162245MTD?

74LCXR162245MTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LCXR162245MTD 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 74LCXR162245MTD?

For technical support, including 74LCXR162245MTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCXR162245MTD requirements.

6.How does Aetrix verify that 74LCXR162245MTD is sourced from the original manufacturer or authorized distributors?

All 74LCXR162245MTD 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 74LCXR162245MTD meets industry standards.

7.What is the process for return or replacement of 74LCXR162245MTD?

All 74LCXR162245MTD units undergo pre-shipment inspection (PSI). If there is an issue with 74LCXR162245MTD, 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 74LCXR162245MTD part is unused and in its original packaging.

Return procedure for 74LCXR162245MTD:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

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…