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

onsemi 74VCX162240MTD

Name: 74VCX162240MTD
Brand: onsemi
SKU: 74VCX162240MTD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74VCX162240MTD

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74VCX162240MTD.pdf

Description:: IC BUFFER INVERT 3.6V 48TSSOP

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Product details

Overview

74VCX162240 from Fairchild Semiconductor is a low-voltage 16-bit inverting buffer/line driver with 3.6V-tolerant I/O, 26Ω series output resistors, and nibble-selectable 3-STATE control. It operates from 1.4V to 3.6V V_CC, delivers ≤3.3 ns propagation delay at 3.3V, and supports memory address driving, clock distribution, and bus transceiver applications in space-constrained industrial and embedded systems.

For engineers reviewing the 74VCX162240 datasheet, pinout, applications, or equivalent options, key selection criteria include 3.6V I/O tolerance across 1.4–3.6V supply range, per-nibble OE control, integrated 26Ω output series termination, sub-4 ns t_PD, and TSSOP-48 package compatibility with high-density PCB layouts.

Technical Context

The 74VCX162240 implements sixteen independent inverting buffers grouped into four 4-bit nibbles, each with dedicated active-low Output Enable (OE1–OE4) inputs. This architecture enables selective 4-bit bus isolation without affecting other data lanes.

Each output integrates a 26Ω series resistor to suppress transmission-line reflections and reduce EMI in high-speed address/clock routing. The device maintains power-off high-impedance I/O and supports live insertion via controlled enable sequencing and pull-up biasing of OE pins.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.4V to 3.6V - Enables direct interface with 1.8V, 2.5V, and 3.3V logic domains without level shifters.
I/O Voltage Tolerance	Up to 3.6V - Allows safe connection to mixed-voltage buses where signal swing exceeds V_CC.
t_PD (max)	3.3 ns at V_CC = 3.3V - Supports >100 MHz clock/data rates in address and control path applications.
Output Series Resistance	26Ω - Integrated termination reduces ringing and EMI on PCB traces up to ~10 cm length.
I_OH/I_OL	±12 mA at 3.0–3.6V - Drives standard CMOS loads and short stubs without external buffers.
Input Leakage	≤5 µA - Minimizes standby current impact in battery-backed or ultra-low-power subsystems.

Pinout & Package

Package: 48-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1 mm wide, package code MTD48.

Pin/Terminal	Circuit Role	Design Meaning
OEn (OE1–OE4)	Nibble-selectable 3-STATE enable input (active LOW)	Four independent controls allow partial bus isolation - e.g., disable only address bits A0–A3 while keeping A4–A15 active.
I0–I15	Inverting buffer inputs	Accept 3.6V-tolerant signals; no clamping diodes required for mixed-supply interfacing.
O0–O15	Inverting buffered outputs with 26Ω series resistance	Resistive termination eliminates need for discrete 22–33Ω series resistors on PCB, saving area and BOM cost.
V_CC, GND	Power and ground supply pins	Multiple V_CC/GND pairs distributed across package improve noise immunity and reduce simultaneous switching noise (SSN).

Key Features

Feature	Design Value
Nibble-selectable 3-STATE control	Four independent OE inputs enable granular bus partitioning - critical for multi-master memory or peripheral arbitration schemes.
26Ω integrated output series resistors	Reduces trace reflection-induced jitter and EMI without requiring layout-level termination components.
Power-off high-impedance I/O	Prevents back-driving of powered-down sections during hot-swap or partial system reset sequences.
Low dynamic power dissipation	CPD = 20 pF enables <1 mW typical active power at 10 MHz - suitable for thermally constrained modules.

Applications

Memory Address Driver	Clock Distribution Buffer
Use Scenario: Driving 16-bit address bus from low-voltage microcontroller to SRAM or Flash memory in portable instrumentation. IC Role / Device Role / Timing Role: Inverting buffer with per-nibble 3-STATE control isolates memory banks during page switching. Use Value: 26Ω output resistors suppress ringing on 5–8 cm address traces, maintaining setup/hold timing margins at 40 MHz.	Use Scenario: Distributing a 25 MHz system clock to multiple low-voltage peripherals (ADC, DAC, FPGA config logic). IC Role / Device Role / Timing Role: Low-skew inverting line driver with matched propagation delays across all 16 outputs. Use Value: t_OSHL/t_OSLH ≤0.75 ns ensures <100 ps inter-output skew - preserves clock phase integrity across receivers.
PCI/ISA Bus Transceiver	Industrial Control Backplane Interface
Use Scenario: Level-translating and buffering 16-bit data/control lines between 3.3V host and legacy 5V-compatible peripherals via voltage-tolerant I/O. IC Role / Device Role / Timing Role: Bidirectional bus driver with 3.6V-tolerant inputs/outputs operating at 1.8V–3.3V V_CC. Use Value: 3.6V I/O tolerance allows direct connection to 3.3V LVTTL buses without external translators or clamps.	Use Scenario: Interfacing PLC CPU module to modular I/O expansion racks over 15 cm backplane traces. IC Role / Device Role / Timing Role: Noise-immune address/data line driver with integrated series termination and ESD-hardened I/O. Use Value: 2000V HBM ESD rating and 26Ω termination jointly reduce field failures from connector discharge and edge-induced reflections.

Memory Address Driver

Clock Distribution Buffer

Use Scenario: Driving 16-bit address bus from low-voltage microcontroller to SRAM or Flash memory in portable instrumentation.

IC Role / Device Role / Timing Role: Inverting buffer with per-nibble 3-STATE control isolates memory banks during page switching.

Use Value: 26Ω output resistors suppress ringing on 5–8 cm address traces, maintaining setup/hold timing margins at 40 MHz.

Use Scenario: Distributing a 25 MHz system clock to multiple low-voltage peripherals (ADC, DAC, FPGA config logic).

IC Role / Device Role / Timing Role: Low-skew inverting line driver with matched propagation delays across all 16 outputs.

Use Value: t_OSHL/t_OSLH ≤0.75 ns ensures <100 ps inter-output skew - preserves clock phase integrity across receivers.

PCI/ISA Bus Transceiver

Industrial Control Backplane Interface

Use Scenario: Level-translating and buffering 16-bit data/control lines between 3.3V host and legacy 5V-compatible peripherals via voltage-tolerant I/O.

IC Role / Device Role / Timing Role: Bidirectional bus driver with 3.6V-tolerant inputs/outputs operating at 1.8V–3.3V V_CC.

Use Value: 3.6V I/O tolerance allows direct connection to 3.3V LVTTL buses without external translators or clamps.

Use Scenario: Interfacing PLC CPU module to modular I/O expansion racks over 15 cm backplane traces.

IC Role / Device Role / Timing Role: Noise-immune address/data line driver with integrated series termination and ESD-hardened I/O.

Use Value: 2000V HBM ESD rating and 26Ω termination jointly reduce field failures from connector discharge and edge-induced reflections.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16240ADGGR	No integrated 26Ω output resistors; requires external series termination; 3.6V I/O tolerance confirmed.	Lacks built-in EMI suppression - demands careful PCB layout and additional 22–33Ω resistors per line.	Select when board space permits discrete termination and lower unit cost outweighs design simplification.
74ALVC162240PW	Same 26Ω series resistors and nibble-OE architecture; operates down to 1.2V V_CC; slightly higher ICC.	Better low-voltage headroom for 1.2V core logic; marginally higher static power in always-on monitoring circuits.	Choose for systems requiring operation below 1.4V or tighter V_CC tolerance in battery-depleted states.

Compared with SN74LVC16240ADGGR and 74ALVC162240PW, the 74VCX162240 uniquely combines 1.4V minimum V_CC, guaranteed 26Ω output termination, and 3.6V I/O tolerance in a single TSSOP-48 footprint - reducing component count and layout risk in mixed-voltage industrial interfaces.

Availability

74VCX162240 is available at Aetrix Electronics and suitable for memory address drivers, clock distribution networks, and industrial backplane interfaces requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature and voltage ranges.

Supply support for 74VCX162240 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

Fairchild Semiconductor was a U.S.-based designer and manufacturer of analog and mixed-signal ICs, acquired by ON Semiconductor in 2016; its VCX logic family remains widely deployed in industrial and communications infrastructure.

The VCX series targets low-voltage, high-speed digital interface applications requiring robust I/O tolerance, low noise, and minimal external components - especially in space-constrained, mixed-supply systems.

FAQ

What is the minimum operating V_CC for the 74VCX162240?

The 74VCX162240 has a specified minimum V_CC of 1.4V per its Recommended Operating Conditions table. Operation below 1.4V is not guaranteed - parameters such as t_PD, I_OH/I_OL, and VIH/VIL thresholds degrade outside this range. For sub-1.4V use cases, consider the 74ALVC162240PW variant, which supports down to 1.2V.

Does the 74VCX162240 require external pull-up resistors on OE pins?

Yes - to ensure high-impedance outputs during power-up or power-down, each OEn pin must be tied to V_CC via an external pull-up resistor. The minimum value depends on the driver's current-sourcing capability; Fairchild recommends calculating based on I_OH at the target V_CC. This requirement applies to all four OE inputs of the 74VCX162240.

Can the 74VCX162240 drive 50Ω transmission lines directly?

No - the 74VCX162240's integrated 26Ω series resistors are optimized for PCB trace lengths up to ~10 cm with typical FR-4 impedance (~60–75Ω). For true 50Ω point-to-point routing, external series termination (e.g., 22–27Ω) plus proper trace impedance control remains necessary. The 74VCX162240 mitigates but does not eliminate full transmission-line design requirements.

Is the 74VCX162240 pin-compatible with standard 74-series 16-bit buffers?

No - the 74VCX162240 uses a 48-pin TSSOP (MTD48) package with nibble-based OE inputs (OE1–OE4), unlike legacy 24-pin DIP/SOIC packages or 48-pin variants with unified OE. Pin mapping differs significantly; migration requires PCB redesign. Always verify pinout against the 74VCX162240 connection diagram before layout reuse.

What is the maximum capacitive load the 74VCX162240 can drive while maintaining t_PD ≤3.3 ns?

At V_CC = 3.3V ±0.3V, the 74VCX162240 guarantees t_PD ≤3.3 ns for C_L = 30 pF and R_L = 500Ω, per AC Electrical Characteristics. Driving >30 pF increases propagation delay nonlinearly - for 50 pF loads, expect ~4.5 ns. Derate timing margins accordingly in high-capacitance applications like long backplanes or multi-drop buses.

74VCX162240MTD Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VCX

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

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: Buffer, 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:: 1.4V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74VCX162240MTD FAQ

1.How can I place an order for 74VCX162240MTD through Aetrix?

Please submit a Request for Quotation (RFQ) for 74VCX162240MTD 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 74VCX162240MTD reliable?

The price and inventory of 74VCX162240MTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VCX162240MTD is usually 5 days.

3.What payment methods are accepted for 74VCX162240MTD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VCX162240MTD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74VCX162240MTD?

74VCX162240MTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74VCX162240MTD 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 74VCX162240MTD?

For technical support, including 74VCX162240MTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VCX162240MTD requirements.

6.How does Aetrix verify that 74VCX162240MTD is sourced from the original manufacturer or authorized distributors?

All 74VCX162240MTD 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 74VCX162240MTD meets industry standards.

7.What is the process for return or replacement of 74VCX162240MTD?

All 74VCX162240MTD units undergo pre-shipment inspection (PSI). If there is an issue with 74VCX162240MTD, 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 74VCX162240MTD part is unused and in its original packaging.

Return procedure for 74VCX162240MTD:

1.Submit a request within 90 days.

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

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