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 74VCXH16244MTD

Name: 74VCXH16244MTD
Brand: onsemi
SKU: 74VCXH16244MTD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74VCXH16244MTD

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74VCXH16244MTD.pdf

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

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,019

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

Product details

Overview

74VCXH16244MTD from Fairchild Semiconductor is a low-voltage 16-bit non-inverting buffer/line driver with bushold inputs and nibble-controlled 3-STATE outputs, operating from 1.2V to 3.6V V_CC, delivering 24 mA drive strength at 3.0V, and achieving 2.5 ns max propagation delay (3.0–3.6V), used in memory/address bus driving and clock distribution systems.

For engineers reviewing the 74VCXH16244MTD datasheet, pinout, applications, or equivalent options, key selection criteria include bushold-enabled floating-input tolerance, 3.6V-tolerant I/O, 48-pin TSSOP package compatibility, and independent 4-bit output enable control for flexible bus segmentation.

Technical Context

The 74VCXH16244MTD implements sixteen identical non-inverting buffers, each grouped into four independent 4-bit nibbles, with dedicated active-low OE pins (OE1–OE4) per nibble enabling selective 3-STATE control without inter-nibble coupling. Its bushold circuitry actively maintains valid logic levels on all 16 data inputs (I0–I15) without external resistors.

It supports mixed-voltage interfacing: V_CC operates from 1.2V to 3.6V while control inputs and outputs tolerate up to 3.6V regardless of V_CC, and its advanced CMOS process ensures high-speed operation with low static power (20 µA ICC) and robust ESD protection (2000V HBM).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.2V to 3.6V - enables direct interface with 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V logic domains
t_PHL/t_PLH	2.5 ns max @ 3.3V - supports >300 MHz bus toggle rates in high-speed address/data paths
I_OH/I_OL	±24 mA @ 3.0V - drives 50 Ω transmission lines or multiple CMOS loads without buffering
Bushold Current	75 µA min @ 3.0V - reliably holds floating inputs at valid logic levels without pull-up resistors
3-STATE Leakage	±10 µA max - minimizes bus contention current when outputs are disabled
Input Voltage Tolerance	0.5V to 4.6V - allows safe connection to higher-voltage control signals even at low V_CC
Operating Temperature	–40°C to +85°C - qualified for industrial ambient environments without derating

Pinout & Package

74VCXH16244MTD is packaged 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 thermal pad (not electrically connected). Pin assignments follow standard TSSOP numbering (1–48) with dual-row gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
OEn (OE1–OE4)	Active-low 3-STATE enable per nibble	Four independent controls allow dynamic segmentation of 16-bit bus into four 4-bit zones
I0–I15	Bushold data inputs	Internally latched to last valid state when floating - eliminates board-level pull resistors and routing overhead
O0–O15	Non-inverting buffered outputs	Drive-strength-matched outputs support fanout to ≥10 LVTTL loads at 3.3V
V_CC, GND	Power supply terminals	Dual V_CC/GND pairs (pins 24/25, 47/48) reduce switching noise and improve PSRR
NC	No-connect	Unused pins (e.g., pins 3, 6, 11, 12, 21, 22, 39, 40, 45, 46) must remain unconnected per datasheet

Key Features

Feature	Design Value
Bushold input circuitry	Eliminates need for 16 external pull-up resistors - reduces BOM count, PCB area, and signal integrity risk from stubs
Nibble-selectable 3-STATE control	Four OE pins enable partial bus isolation - critical for hot-swap, partial reconfiguration, and low-power sleep modes
3.6V-tolerant I/O	Allows use with legacy 3.3V control logic while powering core at 1.8V - simplifies voltage translation design
Low propagation skew (0.5 ns)	Ensures simultaneous edge alignment across all 16 outputs - essential for synchronous bus timing closure
Advanced noise/EMI reduction	Patented output slew-rate control suppresses ground bounce and crosstalk in dense TSSOP layouts

Applications

Memory Address Buffering	Low-Voltage Clock Distribution
Use Scenario: Driving 16-bit address bus between low-voltage microcontroller (1.8V) and DDR SDRAM controller (3.3V). IC Role / Device Role / Timing Role: Non-inverting level-shifting buffer with bushold hold on unused address bits during partial decode cycles. Use Value: Eliminates 16 pull-up resistors and supports 2.5 ns timing margin for 200 MHz address setup/hold windows.	Use Scenario: Distributing a 100 MHz system clock to four independent peripheral clusters in a battery-powered IoT hub. IC Role / Device Role / Timing Role: Low-skew, low-jitter fanout buffer with independent enable per cluster to gate clock during sleep. Use Value: 0.5 ns output-to-output skew ensures <10 ps clock phase error across clusters, meeting setup timing at 100 MHz.
PCI Express Sideband Signal Routing	Industrial PLC Backplane Interface
Use Scenario: Buffering PCIe PERST#, CLKREQ#, WAKE# and other sideband signals between 3.3V host and 1.2V endpoint ASIC. IC Role / Device Role / Timing Role: Voltage-tolerant, bushold-enabled signal conditioner for low-duty-cycle control lines with infrequent assertion. Use Value: 3.6V-tolerant inputs accept 3.3V host signals while V_CC = 1.2V; bushold prevents false assertion during hot-plug transitions.	Use Scenario: Isolating and driving 16-bit I/O status lines between 24V-rated PLC CPU module and field I/O expansion cards. IC Role / Device Role / Timing Role: Robust, ESD-hardened bus transceiver for noisy industrial backplanes with intermittent connectivity. Use Value: 2000V HBM ESD rating and latch-up immunity >300 mA ensure reliable operation in electrically harsh cabinet environments.

Memory Address Buffering

Low-Voltage Clock Distribution

Use Scenario: Driving 16-bit address bus between low-voltage microcontroller (1.8V) and DDR SDRAM controller (3.3V).

IC Role / Device Role / Timing Role: Non-inverting level-shifting buffer with bushold hold on unused address bits during partial decode cycles.

Use Value: Eliminates 16 pull-up resistors and supports 2.5 ns timing margin for 200 MHz address setup/hold windows.

Use Scenario: Distributing a 100 MHz system clock to four independent peripheral clusters in a battery-powered IoT hub.

IC Role / Device Role / Timing Role: Low-skew, low-jitter fanout buffer with independent enable per cluster to gate clock during sleep.

Use Value: 0.5 ns output-to-output skew ensures <10 ps clock phase error across clusters, meeting setup timing at 100 MHz.

PCI Express Sideband Signal Routing

Industrial PLC Backplane Interface

Use Scenario: Buffering PCIe PERST#, CLKREQ#, WAKE# and other sideband signals between 3.3V host and 1.2V endpoint ASIC.

IC Role / Device Role / Timing Role: Voltage-tolerant, bushold-enabled signal conditioner for low-duty-cycle control lines with infrequent assertion.

Use Value: 3.6V-tolerant inputs accept 3.3V host signals while V_CC = 1.2V; bushold prevents false assertion during hot-plug transitions.

Use Scenario: Isolating and driving 16-bit I/O status lines between 24V-rated PLC CPU module and field I/O expansion cards.

IC Role / Device Role / Timing Role: Robust, ESD-hardened bus transceiver for noisy industrial backplanes with intermittent connectivity.

Use Value: 2000V HBM ESD rating and latch-up immunity >300 mA ensure reliable operation in electrically harsh cabinet environments.

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	No bushold; requires external pull resistors; 3.3V-only V_CC range (1.65–3.6V); same 48-TSSOP footprint	Lacks floating-input hold - unsuitable where inputs may be disconnected during configuration or test	Select when bushold is unnecessary and cost sensitivity outweighs design simplicity
74ALVC16244PW	Higher drive (±24 mA @ 3.3V), but no bushold; 1.65–3.6V V_CC; 48-TSSOP, pin-compatible but not functionally identical	Requires additional board space for pull resistors; lacks independent nibble control (single OE)	Choose only if full 16-bit enable suffices and bushold is not required for system reliability

Compared with SN74LVC16244ADGGR and 74ALVC16244PW, the 74VCXH16244MTD uniquely combines bushold, nibble-selectable 3-STATE, and 1.2V operation - enabling lower-power, resistor-free, and more granular bus control in mixed-voltage embedded systems.

Availability

74VCXH16244MTD is available at Aetrix Electronics and suitable for memory subsystems, low-voltage clock trees, industrial backplane interfaces, and PCIe sideband signal conditioning requiring stable component supply and long-term industrial lifecycle support.

Supply support for 74VCXH16244MTD 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 leading designer and manufacturer of high-performance analog and power ICs, acquired by ON Semiconductor in 2016; its legacy logic portfolio remains widely deployed in industrial and computing infrastructure.

The VCXH logic family was engineered for low-voltage, high-speed bus interface applications demanding bushold stability, mixed-voltage interoperability, and minimal board-level components - targeting portable, embedded, and space-constrained systems.

FAQ

What is the minimum V_CC voltage required for reliable operation of the 74VCXH16244MTD?

The 74VCXH16244MTD is fully specified down to 1.2V V_CC, with DC and AC parameters guaranteed across the entire 1.2V–3.6V range. At 1.2V, it delivers 100 µA bushold hold current and supports 30 ns propagation delay - sufficient for low-power standby and wake-up signaling in battery-operated devices using the 74VCXH16244MTD.

Does the 74VCXH16244MTD require external pull-up resistors on its data inputs?

No - the 74VCXH16244MTD integrates active bushold circuitry on all 16 data inputs (I0–I15), which automatically maintains the last valid logic state when inputs float. This eliminates the need for external pull-up or pull-down resistors, reducing BOM cost and PCB layout complexity in systems using the 74VCXH16244MTD.

How many independent 3-STATE control inputs does the 74VCXH16244MTD have, and what do they control?

The 74VCXH16244MTD has four independent active-low output enable inputs: OE1 controls outputs O0–O3, OE2 controls O4–O7, OE3 controls O8–O11, and OE4 controls O12–O15. This nibble-level control enables partial bus isolation - a key capability distinguishing the 74VCXH16244MTD from single-OE alternatives.

What is the maximum output drive strength of the 74VCXH16244MTD at 3.0V V_CC?

At 3.0V V_CC, the 74VCXH16244MTD guarantees ±24 mA output drive (I_OH/I_OL) - sufficient to drive standard 50 Ω transmission lines or fan out to ten or more LVTTL inputs. This drive strength is maintained across the full industrial temperature range (–40°C to +85°C) for the 74VCXH16244MTD.

Is the 74VCXH16244MTD pin-compatible with other 48-pin TSSOP 16-bit buffers like the 74LVC16244?

No - although the 74VCXH16244MTD shares the 48-TSSOP (MTD48) package with some 74LVC16244 variants, its pinout differs significantly: it features four OE pins and NC placements that are incompatible with single-OE devices. Board redesign is required to substitute the 74VCXH16244MTD for non-bushold 16-bit buffers.

74VCXH16244MTD Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VCXH

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

Packaging:: Tube

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:: 24mA, 24mA

Voltage - Supply:: 1.2V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74VCXH16244MTD FAQ

1.How can I place an order for 74VCXH16244MTD through Aetrix?

Please submit a Request for Quotation (RFQ) for 74VCXH16244MTD 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 74VCXH16244MTD reliable?

The price and inventory of 74VCXH16244MTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VCXH16244MTD is usually 5 days.

3.What payment methods are accepted for 74VCXH16244MTD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VCXH16244MTD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74VCXH16244MTD?

74VCXH16244MTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74VCXH16244MTD 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 74VCXH16244MTD?

For technical support, including 74VCXH16244MTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VCXH16244MTD requirements.

6.How does Aetrix verify that 74VCXH16244MTD is sourced from the original manufacturer or authorized distributors?

All 74VCXH16244MTD 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 74VCXH16244MTD meets industry standards.

7.What is the process for return or replacement of 74VCXH16244MTD?

All 74VCXH16244MTD units undergo pre-shipment inspection (PSI). If there is an issue with 74VCXH16244MTD, 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 74VCXH16244MTD part is unused and in its original packaging.

Return procedure for 74VCXH16244MTD:

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…