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

onsemi 74VCX162244MTDX

Name: 74VCX162244MTDX
Brand: onsemi
SKU: 74VCX162244MTDX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74VCX162244MTDX

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74VCX162244MTDX.pdf

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

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Product details

Overview

74VCX162244 from ON Semiconductor is a low-voltage 16-bit non-inverting buffer/line driver with nibble-level 3-STATE control, 3.6V-tolerant I/O, integrated 26Ω series output resistors, and operation from 1.2V to 3.6V V_CC. It serves as a memory address driver, clock distribution buffer, or bus transceiver in portable and mixed-voltage systems.

For engineers reviewing the 74VCX162244 datasheet, pinout, applications, or equivalent options, key selection considerations include its 3.6V I/O tolerance across 1.2V–3.6V supply, 3.3 ns max propagation delay at 3.3V, 12 mA drive strength, power-off high-impedance behavior, and TSSOP-48 package compatibility.

Technical Context

The 74VCX162244 implements four independent 4-bit (nibble) groups, each with dedicated active-low Output Enable (OE1–OE4) inputs-enabling selective 4-bit bus isolation without full 16-bit gating. Each output includes a built-in 26Ω series resistor to suppress transmission-line ringing and reduce EMI in high-speed routing.

Its CMOS design ensures static drive capability (±12 mA at 3.0V), latch-up immunity >300 mA, and power-off high-impedance I/O-critical for hot-swap and partial-power-down systems. Input thresholds scale with V_CC (e.g., VIH = 0.65×V_CC at 1.65–2.3V), supporting robust interfacing across voltage domains.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.2V to 3.6V - Enables direct interface with 1.2V, 1.8V, 2.5V, and 3.3V logic domains without level shifters.
I/O Voltage Tolerance	Up to 3.6V - Allows safe connection to 3.3V buses while powered from lower V_CC, eliminating external clamping diodes.
t_PD Max	3.3 ns at V_CC = 3.3V - Supports >200 MHz clock/data rates in address or control path applications.
Output Drive (I_OH/I_OL)	±12 mA at V_CC = 3.0V - Sufficient to drive 50Ω transmission lines or multiple CMOS loads without external buffers.
Output Series Resistor	26Ω - Integrated termination reduces overshoot/ringing on PCB traces up to ~10 cm, lowering EMI and improving signal integrity.
Power-Off Behavior	High-impedance I/O - Prevents back-driving of powered subsystems during partial power-down or hot insertion.
ESD Rating	HBM >2000V - Meets industrial-grade robustness requirements without additional protection circuitry.

Pinout & Package

74VCX162244 is packaged in a 48-pin Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 6.1 mm wide, with 0.5 mm pitch. Pin assignments are defined for dual-row surface-mount layout with standard thermal and mechanical footprint.

Pin/Terminal	Circuit Role	Design Meaning
OEn (OE1–OE4)	Active-Low Output Enable (4 independent)	Each controls one 4-bit nibble; enables granular bus partitioning-e.g., isolate memory upper/lower bytes independently.
I0–I15	Buffer Inputs	Non-inverting inputs accepting 3.6V-tolerant signals; compatible with 1.2V–3.3V logic families regardless of V_CC.
O0–O15	Buffer Outputs	3-STATE outputs with integrated 26Ω series resistance-reduces need for discrete termination resistors on PCB.
V_CC	Power Supply	Single supply pin per power rail; multiple V_CC pins (pins 24, 48) improve decoupling and reduce IR drop in high-speed switching.
GND	Ground Reference	Dual GND pins (pins 23, 47) provide low-inductance return paths for all 16 outputs, minimizing ground bounce.

Key Features

Feature	Design Value
3.6V-tolerant I/O at 1.2V–3.6V V_CC	Eliminates external level translators when interfacing 3.3V peripherals to sub-2V SoCs or FPGAs.
Integrated 26Ω output series resistors	Reduces PCB component count and layout area-no discrete 22–33Ω resistors required for trace impedance matching.
Nibble-selectable 3-STATE control (OE1–OE4)	Enables dynamic segmentation of 16-bit buses-e.g., enable only address bits A0–A3 during byte-aligned memory access.
Power-off high-impedance I/O	Prevents current leakage and bus contention when V_CC is unpowered-essential for modular backplane or hot-plug designs.
Low dynamic power dissipation	CPD = 20 pF - Minimizes switching current in battery-powered devices; supports >100 MHz operation with <10 mW typical active power.

Applications

Memory Address Buffering	Low-Voltage Clock Distribution
Use Scenario: Driving 16-bit address lines from a 1.8V microcontroller to a 3.3V SRAM or Flash device. IC Role / Device Role / Timing Role: Non-inverting voltage-tolerant buffer with nibble-selectable 3-STATE control to isolate memory banks. Use Value: Eliminates external level shifters and termination resistors while maintaining timing margin via 3.3 ns t_PD and 26Ω series damping.	Use Scenario: Distributing a 50 MHz system clock from a 1.2V FPGA core to multiple 3.3V peripheral ICs. IC Role / Device Role / Timing Role: Low-skew (0.5 ns max) clock buffer with 3.6V-tolerant outputs and power-off isolation. Use Value: Ensures clean edge integrity across mixed-supply domains and prevents clock feedthrough during FPGA configuration reset.
Hot-Swappable Backplane Interface	Portable Device Bus Transceiver
Use Scenario: Isolating a 16-bit data bus between a powered main board and an unpowered expansion module during insertion. IC Role / Device Role / Timing Role: Bidirectional bus driver with power-off high-Z I/O and live-insertion support. Use Value: Prevents bus contention and latch-up during hot-swap events-enabled by guaranteed high-impedance state at V_CC = 0V.	Use Scenario: Interfacing a 1.2V application processor's GPIO bus to 3.3V display or audio codecs in smartphones or tablets. IC Role / Device Role / Timing Role: Low-power, space-constrained 16-bit level-shifting buffer with integrated ESD protection. Use Value: Reduces BOM cost and PCB area by combining level translation, termination, and 2000V HBM ESD into one TSSOP-48 device.

Memory Address Buffering

Low-Voltage Clock Distribution

Use Scenario: Driving 16-bit address lines from a 1.8V microcontroller to a 3.3V SRAM or Flash device.

IC Role / Device Role / Timing Role: Non-inverting voltage-tolerant buffer with nibble-selectable 3-STATE control to isolate memory banks.

Use Value: Eliminates external level shifters and termination resistors while maintaining timing margin via 3.3 ns t_PD and 26Ω series damping.

Use Scenario: Distributing a 50 MHz system clock from a 1.2V FPGA core to multiple 3.3V peripheral ICs.

IC Role / Device Role / Timing Role: Low-skew (0.5 ns max) clock buffer with 3.6V-tolerant outputs and power-off isolation.

Use Value: Ensures clean edge integrity across mixed-supply domains and prevents clock feedthrough during FPGA configuration reset.

Hot-Swappable Backplane Interface

Portable Device Bus Transceiver

Use Scenario: Isolating a 16-bit data bus between a powered main board and an unpowered expansion module during insertion.

IC Role / Device Role / Timing Role: Bidirectional bus driver with power-off high-Z I/O and live-insertion support.

Use Value: Prevents bus contention and latch-up during hot-swap events-enabled by guaranteed high-impedance state at V_CC = 0V.

Use Scenario: Interfacing a 1.2V application processor's GPIO bus to 3.3V display or audio codecs in smartphones or tablets.

IC Role / Device Role / Timing Role: Low-power, space-constrained 16-bit level-shifting buffer with integrated ESD protection.

Use Value: Reduces BOM cost and PCB area by combining level translation, termination, and 2000V HBM ESD into one TSSOP-48 device.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16244ADGGR	3.6V-tolerant I/O, but no integrated series resistors; 4.2 ns t_PD at 3.3V; LVC family, not VCX.	Lacks built-in 26Ω termination-requires external resistors for EMI control; higher propagation delay limits max frequency.	Choose if lower cost is prioritized over signal integrity optimization and board space savings.
74ALVC162244PW	Same pinout and function, but ALVC family: higher drive (±24 mA), no 26Ω resistors, 3.3V-only V_CC range.	Requires 3.3V supply only-cannot operate below 2.3V; lacks low-voltage flexibility and integrated termination.	Choose only for legacy 3.3V-only systems where higher drive strength justifies loss of 1.2V–3.6V scalability.

Compared with SN74LVC16244ADGGR and 74ALVC162244PW, the 74VCX162244 uniquely combines 1.2V–3.6V operation, 3.6V I/O tolerance, and integrated 26Ω output resistors-making it the only option that simultaneously eliminates level shifters, discrete terminations, and supply-rail constraints in modern mixed-voltage designs.

Availability

74VCX162244 is available at Aetrix Electronics and suitable for memory subsystems, low-voltage clock distribution networks, hot-swappable backplanes, and portable electronics requiring stable component supply and long-term obsolescence management.

Supply support for 74VCX162244 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 (formerly Fairchild Semiconductor) is a global leader in energy-efficient semiconductor solutions for automotive, industrial, cloud computing, and portable electronics.

The 74VCX162244 belongs to the VCX low-voltage logic family-designed specifically for mixed-supply systems requiring voltage translation, noise reduction, and power-aware bus interfacing without external components.

FAQ

What is the operating voltage range for the 74VCX162244?

The 74VCX162244 operates from 1.2V to 3.6V V_CC, with full 3.6V tolerance on all inputs and outputs. This allows direct interfacing between 1.2V, 1.8V, 2.5V, and 3.3V logic domains without external level shifters-making the 74VCX162244 ideal for heterogeneous voltage systems found in modern SoC-based designs.

Does the 74VCX162244 have built-in termination resistors?

Yes, the 74VCX162244 integrates 26Ω series resistors in all 16 outputs. These resistors dampen signal reflections on PCB traces up to ~10 cm in length, reducing EMI and overshoot without requiring discrete components-directly lowering BOM cost and layout complexity for the 74VCX162244 implementation.

How does the 74VCX162244 handle power-off conditions?

The 74VCX162244 features power-off high-impedance inputs and outputs: when V_CC = 0V, all I/O pins enter a high-Z state regardless of input voltage. This prevents back-driving and bus contention in hot-swap or partial-power-down systems-ensuring safe operation of the 74VCX162244 even when disconnected from its supply rail.

What is the pin configuration and package type of the 74VCX162244?

The 74VCX162244 is supplied in a 48-lead TSSOP (Thin Shrink Small Outline Package), JEDEC MO-153 compliant, with 0.5 mm pitch and 6.1 mm body width. Its pinout includes four independent OE inputs (OE1–OE4), 16 inputs (I0–I15), 16 outputs (O0–O15), dual V_CC and GND pins-optimized for signal integrity and thermal performance in the 74VCX162244 layout.

Is the 74VCX162244 recommended for new designs?

No-the 74VCX162244 is marked "DISCONTINUED" and "NOT RECOMMENDED FOR NEW DESIGN" by ON Semiconductor. However, Aetrix Electronics maintains active inventory and supply chain support for legacy and maintenance programs requiring the 74VCX162244, including obsolescence mitigation and lifecycle coordination.

74VCX162244MTDX Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VCX

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 4

Number of Bits per Element:: 4

Input Type:: -

Output Type:: 3-State

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

Voltage - Supply:: 1.2V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74VCX162244MTDX FAQ

1.How can I place an order for 74VCX162244MTDX through Aetrix?

Please submit a Request for Quotation (RFQ) for 74VCX162244MTDX 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 74VCX162244MTDX reliable?

The price and inventory of 74VCX162244MTDX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VCX162244MTDX is usually 5 days.

3.What payment methods are accepted for 74VCX162244MTDX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VCX162244MTDX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74VCX162244MTDX?

74VCX162244MTDX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74VCX162244MTDX 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 74VCX162244MTDX?

For technical support, including 74VCX162244MTDX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VCX162244MTDX requirements.

6.How does Aetrix verify that 74VCX162244MTDX is sourced from the original manufacturer or authorized distributors?

All 74VCX162244MTDX 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 74VCX162244MTDX meets industry standards.

7.What is the process for return or replacement of 74VCX162244MTDX?

All 74VCX162244MTDX units undergo pre-shipment inspection (PSI). If there is an issue with 74VCX162244MTDX, 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 74VCX162244MTDX part is unused and in its original packaging.

Return procedure for 74VCX162244MTDX:

1.Submit a request within 90 days.

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

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