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

NXP Semiconductors 74LVC2245ABQ,115

Name: 74LVC2245ABQ,115
Brand: NXP Semiconductors
SKU: 74LVC2245ABQ,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVC2245ABQ,115

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-VFQFN Exposed Pad

Datasheet:: 74LVC2245ABQ,115.pdf

Description:: IC TXRX NON-INVERT 3.6V 20DHVQFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74LVC2245ABQ,115 from Nexperia is an octal 3-state transceiver with integrated 30 Ω series termination resistors, bidirectional data flow controlled by DIR and OE pins, 1.2 V to 3.6 V supply operation, 5.5 V tolerant inputs, and -40 °C to +125 °C temperature range - used in high-speed bus interface translation between 3.3 V and 5 V domains.

For engineers reviewing the 74LVC2245ABQ,115 datasheet, 74LVC2245ABQ,115 pinout, 74LVC2245ABQ,115 application, or 74LVC2245ABQ,115 equivalent, key selection factors include its 30 Ω on-die termination for signal integrity, IOFF partial power-down protection, Schmitt-trigger inputs for noise immunity, and DHVQFN20 thermal-enhanced package for dense PCB layouts.

Technical Context

This device implements a dual-bus bidirectional transceiver architecture with independent direction (DIR) and output enable (OE) control logic. It supports simultaneous A-to-B and B-to-A data flow based on DIR state while maintaining 3-state isolation when OE is HIGH.

Its IOFF circuitry actively disables outputs during power-down, blocking backflow current when VCC = 0 V and inputs/outputs driven to 5.5 V - enabling safe hot-swap and mixed-voltage system partitioning without external isolation components.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.2 V to 3.6 V - enables direct interfacing with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic families
Input Tolerance	Up to 5.5 V - allows connection to 5 V buses without level-shifting circuitry
Propagation Delay	1.5 ns to 8.0 ns (VCC = 3.0–3.6 V) - supports >100 MHz bus timing in compact routing
Termination Resistance	30 Ω series per I/O - reduces reflections on PCB traces up to 10 cm without discrete resistors
IOFF Leakage	±10 μA max at VCC = 0 V - prevents damaging back-current during partial power-down sequences
ESD Rating	HBM >2000 V, CDM >1000 V - meets industrial-grade robustness requirements
Operating Temperature	-40 °C to +125 °C - qualified for under-hood, industrial control, and telecom infrastructure use

Pinout & Package

DHVQFN20 (SOT764-1) package: 2.5 × 4.5 × 0.85 mm body, 20-terminal no-lead quad flat design with exposed thermal pad (non-soldered or GND-connected), optimized for thermal dissipation and high-density routing.

Pin/Terminal	Circuit Role	Design Meaning
1 (DIR)	Direction control input	LOW enables A→B data flow; HIGH enables B→A flow - determines bus master/slave data path
2–9 (A0–A7)	Port A I/O terminals	Bidirectional data lines with Schmitt-trigger inputs - tolerate slow-rising signals and reduce noise susceptibility
10 (GND)	Ground reference	0 V return path for all internal logic and I/O - must be low-impedance for signal integrity
11–18 (B7–B0)	Port B I/O terminals	Reversed numbering order matches JEDEC standard layout - simplifies PCB trace symmetry
19 (OE)	Output enable (active LOW)	Drives all outputs to high-impedance when HIGH - essential for multi-drop bus arbitration
20 (VCC)	Power supply	Single-supply rail powers both ports and internal logic - eliminates need for dual supplies in level translation

Key Features

Feature	Design Value
Integrated 30 Ω series termination	Eliminates eight external resistors per device, reducing BOM count and PCB area in DDR, memory, and parallel bus interfaces
IOFF partial power-down protection	Prevents reverse current flow when VCC is off but I/Os remain active - critical for hot-plug and power-gated subsystems
Schmitt-trigger inputs	Provides 0.35×VCC hysteresis - rejects noise on long traces or unterminated stubs in industrial environments
5.5 V tolerant I/O	Allows direct connection to legacy 5 V peripherals without external translators - simplifies migration from older logic families
JEDEC-compliant voltage ranges	Validated across JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V) - ensures interoperability across foundry processes

Applications

PCI Express Gen 1 Interface

Industrial PLC Backplane

Use Scenario: Bidirectional configuration register access between 3.3 V controller and 5 V peripheral cards via shared backplane bus.

IC Role / Device Role / Timing Role: Level-translating transceiver managing A/B port directionality and 3-state isolation during card insertion/removal.

Use Value: IOFF protection prevents backfeed damage during hot-swap; 30 Ω termination maintains signal integrity across 15 cm backplane traces.

Use Scenario: Isolating sensor acquisition module (3.3 V) from actuator driver board (5 V) in modular I/O chassis.

IC Role / Device Role / Timing Role: Direction-controlled data bridge synchronizing analog-to-digital conversion results and command packets across voltage domains.

Use Value: Schmitt-trigger inputs reject EMI-induced glitches on noisy factory-floor wiring; wide temp range ensures reliability at 85 °C ambient.

Automotive Infotainment Head Unit

Test Equipment Digital I/O Module

Use Scenario: Interfacing 1.8 V SoC GPIOs to 3.3 V display timing controller in head unit mainboard.

IC Role / Device Role / Timing Role: Low-latency transceiver enabling real-time video sync pulse transmission with sub-8 ns propagation delay.

Use Value: 1.2 V minimum VCC supports ultra-low-power sleep states; 125 °C rating covers under-dash thermal conditions.

Use Scenario: Configurable digital stimulus/response channel in automated test equipment supporting multiple DUT voltage standards.

IC Role / Device Role / Timing Role: Reconfigurable bus translator allowing same test fixture to drive 1.8 V, 2.5 V, or 3.3 V devices via software-controlled DIR/OE.

Use Value: Single-device voltage flexibility reduces fixture complexity; 5.5 V tolerance accommodates margin testing up to 5 V.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC2245APWRE4	TSSOP20 package (SOT360-1); 4.4 mm body width; 0.65 mm pitch; no exposed thermal pad	Lower thermal performance; suitable for cost-sensitive, non-thermally constrained designs	Select when board space permits larger footprint and thermal load is <150 mW
74AVC2245BQX	Higher speed (tpd ≤ 4.5 ns @ 3.3 V); 1.2–3.6 V supply; no 5 V tolerance; different pinout	Not compatible for 5 V interface scenarios; requires redesign of PCB and firmware logic	Choose only if 5 V tolerance is unnecessary and sub-5 ns timing is mandatory

Compared with SN74LVC2245APWRE4, the 74LVC2245ABQ,115 offers superior thermal management via its DHVQFN20 exposed pad and tighter propagation skew (<1.5 ns). Against 74AVC2245BQX, it trades raw speed for robust 5.5 V I/O tolerance and drop-in compatibility in mixed-voltage systems.

Availability

74LVC2245ABQ,115 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive infotainment head units, and automated test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74LVC2245ABQ,115 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 delivering high-performance logic, discrete, and MOSFET solutions with emphasis on efficiency, reliability, and sustainability - headquartered in Nijmegen, Netherlands.

The 74LVC2245A belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered specifically for voltage translation and bus interfacing in power-constrained, thermally demanding, and mixed-supply systems.

FAQ

Can 74LVC2245ABQ,115 operate with VCC = 1.2 V while driving 5 V-tolerant loads?

Yes. At VCC = 1.2 V, the device maintains full 5.5 V input tolerance and 3-state output capability. Output HIGH voltage is guaranteed ≥1.08 V (min), sufficient to drive subsequent 1.2 V or 1.8 V inputs. The 5 V tolerance applies regardless of VCC level, enabling true universal level translation.

What is the function of the exposed thermal pad on the DHVQFN20 package?

The exposed pad (terminal 1 index area) is electrically isolated from internal circuitry. It may be left floating or connected to GND to improve thermal conduction to the PCB. When soldered to a thermal land, it reduces junction-to-board thermal resistance by up to 30 °C/W, critical for sustained 125 °C operation under 50 mA total I/O load.

How does the IOFF feature behave during power sequencing?

When VCC drops below 0.2 V, the IOFF circuit automatically disables all outputs, limiting OFF-state leakage to ±10 μA maximum even if A/B pins are held at 5.5 V. This prevents reverse current flow into powered-down sections - a requirement for PCIe hot-plug and modular power architectures.

Is the 30 Ω series termination resistor matched across all 16 I/O channels?

Yes. Each of the 16 I/O lines (A0–A7, B0–B7) includes a laser-trimmed 30 Ω ±15 % series resistor fabricated monolithically within the die. Matching is maintained within ±5 % across temperature (-40 °C to +125 °C) and process variation, ensuring consistent signal integrity across all data lanes.

74LVC2245ABQ,115 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74LVC

Package/Case:: 20-VFQFN Exposed Pad

Packaging:: Bulk

Product Status:: Active

Logic Type:: Transceiver, Non-Inverting

Number of Elements:: 1

Number of Bits per Element:: 8

Input Type:: -

Output Type:: 3-State

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

Voltage - Supply:: 1.2V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-DHVQFN (4.5x2.5)

74LVC2245ABQ,115 FAQ

1.How can I place an order for 74LVC2245ABQ,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVC2245ABQ,115 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 74LVC2245ABQ,115 reliable?

The price and inventory of 74LVC2245ABQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2245ABQ,115 is usually 5 days.

3.What payment methods are accepted for 74LVC2245ABQ,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2245ABQ,115 transactions.

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4.How is shipping managed for 74LVC2245ABQ,115?

74LVC2245ABQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVC2245ABQ,115 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 74LVC2245ABQ,115?

For technical support, including 74LVC2245ABQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2245ABQ,115 requirements.

6.How does Aetrix verify that 74LVC2245ABQ,115 is sourced from the original manufacturer or authorized distributors?

All 74LVC2245ABQ,115 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 74LVC2245ABQ,115 meets industry standards.

7.What is the process for return or replacement of 74LVC2245ABQ,115?

All 74LVC2245ABQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2245ABQ,115, 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 74LVC2245ABQ,115 part is unused and in its original packaging.

Return procedure for 74LVC2245ABQ,115:

1.Submit a request within 90 days.

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

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