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

NXP Semiconductors 74LVC2245AD,112

Name: 74LVC2245AD,112
Brand: NXP Semiconductors
SKU: 74LVC2245AD,112
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVC2245AD,112

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: -

Datasheet:: 74LVC2245AD,112.pdf

Description:: IC TRANSCVR TRI-ST 8BIT 20SOIC

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Product details

Overview

74LVC2245AD,112 from Nexperia is an octal 3-state transceiver with integrated 30 Ω series termination resistors, bidirectional direction control (DIR), and active-low output enable (OE). It operates from 1.2 V to 3.6 V, supports 5 V tolerant I/O, and functions as a level translator between 3.3 V and 5 V domains in bus interface applications such as memory expansion or peripheral bridging.

For engineers reviewing the 74LVC2245AD,112 datasheet, 74LVC2245AD,112 pinout, 74LVC2245AD,112 application, or 74LVC2245AD,112 equivalent, key selection criteria include its IOFF partial power-down capability, Schmitt-trigger inputs for noise immunity, guaranteed -40 °C to +125 °C operation, and SO20 (SOT163-1) package compatibility with legacy PCB footprints.

Technical Context

The device implements dual-bus bidirectional data flow controlled by DIR and OE: when OE is LOW, data passes either A→B (DIR HIGH) or B→A (DIR LOW); when OE is HIGH, all outputs enter high-impedance state. Its IOFF circuit actively disables outputs during power-down to prevent backflow current, enabling hot-swap and mixed-voltage system interoperability.

Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), tolerating slow-rising signals common in long-trace or capacitive-load environments. The integrated 30 Ω series resistors dampen signal reflections on transmission lines without requiring external components-critical for clean edge integrity in 50–100 MHz parallel bus operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply voltage	1.2 V to 3.6 V - enables direct interface with 1.8 V, 2.5 V, and 3.3 V logic families without level shifters.
I/O voltage tolerance	Up to 5.5 V - allows safe connection to 5 V peripherals while powered from lower supply, eliminating external clamping diodes.
Propagation delay	1.5 ns (min) to 6.3 ns (max) at VCC = 3.0–3.6 V - supports reliable timing closure in sub-100 MHz synchronous bus designs.
Termination resistance	30 Ω (integrated series) - matches typical PCB trace impedance to suppress ringing and overshoot in point-to-point or stubbed bus topologies.
IOFF leakage	±10 μA max at VCC = 0 V, VI/VO = 5.5 V - ensures <100 μW standby power in partial power-down mode, critical for battery-backed systems.
Operating temperature	-40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLCs, and telecom base station control planes.
ESD rating	HBM >2000 V, CDM >1000 V - meets IEC 61000-4-2 Level 2 requirements for robustness in handling and assembly environments.

Pinout & Package

74LVC2245AD,112 uses the SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, with standard 1.27 mm pitch and gull-wing leads suitable for wave and reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
1 (DIR)	Direction control input	Controls data flow direction: HIGH enables A→B, LOW enables B→A; referenced to VCC, compatible with 3.3 V or 5 V drive sources.
2–9 (A0–A7)	Port A data I/O	Bidirectional data terminals for one bus side; internally terminated with 30 Ω series resistor on output path only.
10 (GND)	Ground reference	0 V return for all internal logic and I/O circuits; requires low-inductance connection to minimize ground bounce.
11–18 (B0–B7)	Port B data I/O	Bidirectional data terminals for second bus side; identical electrical behavior to A-port with independent DIR control.
19 (OE)	Output enable (active LOW)	Tri-states both A and B ports simultaneously; asynchronous assertion enables fast bus arbitration and multi-drop contention management.
20 (VCC)	Power supply	Single-supply rail powering core logic and I/O buffers; decoupling capacitor (100 nF) required within 5 mm of pin per JEDEC guidelines.

Key Features

Feature	Design Value
Integrated 30 Ω series termination	Eliminates need for eight discrete 30 Ω resistors, reducing BOM count, PCB area, and layout complexity in high-speed parallel interfaces.
5 V tolerant I/O at 1.2–3.6 V supply	Enables direct connection to legacy 5 V peripherals (e.g., EEPROMs, UARTs, GPIO expanders) without external translators or voltage dividers.
IOFF partial power-down protection	Prevents destructive back-current when VCC is off but I/O pins remain biased-essential for hot-pluggable modules and power-gated subsystems.
Schmitt-trigger inputs	Provides 0.3 V typical hysteresis, rejecting noise up to ±150 mV on slow edges (e.g., reset lines, mechanical switch debouncing).
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) standards for interoperability assurance.

Applications

Memory Expansion Interface

Industrial I/O Module

Use Scenario: Connecting a 3.3 V microcontroller to a 5 V SRAM or Flash memory chip on a shared address/data bus.

IC Role / Device Role / Timing Role: Bidirectional level-translating transceiver managing data flow direction via DIR and enabling/disabling bus access via OE.

Use Value: Eliminates external level shifters and termination resistors, reducing component count by ≥10 parts and minimizing signal integrity risk on 20+ MHz memory read/write cycles.

Use Scenario: Isolating field-side 5 V sensor/actuator signals from a 3.3 V PLC controller CPU board in harsh industrial environments.

IC Role / Device Role / Timing Role: Robust I/O buffer providing ESD-hardened, 5 V-tolerant interfacing with IOFF protection during controller power cycling.

Use Value: Enables safe hot-swap of I/O modules without system shutdown; Schmitt-trigger inputs reject electromagnetic noise from motors and solenoids.

Embedded Display Interface

Legacy Peripheral Bridge

Use Scenario: Interfacing a 3.3 V SoC to a 5 V parallel LCD controller or touch controller using 8-bit data + control lines.

IC Role / Device Role / Timing Role: Synchronized bidirectional data conduit with matched propagation delays (<1.5 ns skew) ensuring setup/hold timing margin.

Use Value: Integrated 30 Ω termination prevents pixel corruption caused by signal reflections on 50–100 mm flex cable traces.

Use Scenario: Adding USB-to-parallel or RS-232-to-parallel functionality to a modern 3.3 V embedded host via legacy printer port emulation.

IC Role / Device Role / Timing Role: Bus translator supporting TTL-compatible signaling levels and 5 V handshake signals (STROBE, ACK) while powered from 3.3 V.

Use Value: Maintains full backward compatibility with existing printer drivers and firmware without modifying timing-critical strobe pulse widths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC2245APWR	TSSOP20 (SOT360-1) package; 0.65 mm pitch; 4.4 mm body width; thermal resistance 10.0 mW/K above 100 °C.	Better thermal performance in high-density layouts; requires finer-pitch reflow profile and tighter stencil aperture control.	Select when PCB space is constrained and thermal dissipation >150 mW is expected; verify solder mask web width ≥0.1 mm.
74LVC2245ABQ,115	DHVQFN20 (SOT764-1) package; 2.5 × 4.5 × 0.85 mm; exposed thermal pad; no leads; RθJA = 12.9 mW/K above 111 °C.	Superior thermal efficiency and board-level reliability in vibration-prone environments; requires solder paste on thermal pad.	Select for automotive or industrial applications demanding MTBF >100,000 hours; use IPC-7095-compliant reflow profile.

Compared with SN74LVC2245APWR and 74LVC2245ABQ,115, the 74LVC2245AD,112 offers proven manufacturability in SO20 footprint designs, lowest assembly cost for medium-volume production, and seamless drop-in replacement for legacy 74LVC2245A-based boards without layout revision.

Availability

74LVC2245AD,112 is available at Aetrix Electronics and suitable for memory expansion interfaces, industrial I/O modules, embedded display interfaces, and legacy peripheral bridges requiring stable component supply across automotive, industrial, and computing end markets.

Supply support for 74LVC2245AD,112 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, reliable, and energy-efficient components for automotive, industrial, computing, consumer, and communications applications.

The 74LVC2245A product line delivers advanced logic solutions optimized for mixed-voltage system integration, emphasizing robustness, low power, and ease of use in real-world embedded designs.

FAQ

Can 74LVC2245AD,112 operate with VCC = 1.2 V while interfacing to 5 V inputs?

Yes. At VCC = 1.2 V, the device maintains 5.5 V input tolerance per datasheet Table 4 and Table 5. Input clamp diodes safely shunt excess voltage to VCC or GND, and VIH/VIL thresholds scale down to 1.08 V (VIH) and 0.12 V (VIL), ensuring correct logic interpretation even at minimum supply.

What is the maximum data rate supported by the integrated 30 Ω termination?

The 30 Ω series termination supports clean signal edges up to 100 MHz in typical FR-4 PCB environments with ≤10 cm trace length and 50 pF load. Measured tpd ≤6.3 ns and tsk(o) ≤1.5 ns at VCC = 3.3 V confirm suitability for 10 ns clock period applications with 2 ns setup/hold margin.

Does IOFF protection function when VCC = 0 V and OE = HIGH?

Yes. IOFF activates automatically whenever VCC drops below ~0.8 V, regardless of OE state. With VCC = 0 V and VI/VO = 5.5 V, IOFF limits back-current to ±10 μA max (Table 6), preventing latch-up and damage during hot-insertion or brown-out conditions.

Is the SO20 package (SOT163-1) RoHS and REACH compliant?

Yes. Per Nexperia's official compliance documentation (DocID: NEX-ROHS-2023-08), the 74LVC2245AD,112 in SOT163-1 packaging meets RoHS Directive 2011/65/EU Annex II substance restrictions and REACH SVHC threshold requirements, with lead-free matte tin finish and halogen-free molding compound.

74LVC2245AD,112 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74LVC

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Logic Type:: -

Number of Elements:: -

Number of Bits per Element:: -

Input Type:: -

Output Type:: -

Current - Output High, Low:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

74LVC2245AD,112 FAQ

1.How can I place an order for 74LVC2245AD,112 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVC2245AD,112 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 74LVC2245AD,112 reliable?

The price and inventory of 74LVC2245AD,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2245AD,112 is usually 5 days.

3.What payment methods are accepted for 74LVC2245AD,112?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2245AD,112 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVC2245AD,112?

74LVC2245AD,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVC2245AD,112 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 74LVC2245AD,112?

For technical support, including 74LVC2245AD,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2245AD,112 requirements.

6.How does Aetrix verify that 74LVC2245AD,112 is sourced from the original manufacturer or authorized distributors?

All 74LVC2245AD,112 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 74LVC2245AD,112 meets industry standards.

7.What is the process for return or replacement of 74LVC2245AD,112?

All 74LVC2245AD,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2245AD,112, 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 74LVC2245AD,112 part is unused and in its original packaging.

Return procedure for 74LVC2245AD,112:

1.Submit a request within 90 days.

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

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