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

STMicroelectronics 74LVX16244TTR

Name: 74LVX16244TTR
Brand: STMicroelectronics
SKU: 74LVX16244TTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVX16244TTR

Manufacturer:: STMicroelectronics

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74LVX16244TTR.pdf

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

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Product details

Overview

74LVX16244TTR from STMicroelectronics is a 16-bit non-inverting 3-state bus buffer with 5V-tolerant inputs, designed for level-shifting between 3.3V and 5V systems. It features tPD = 5.3 ns (typ.) at VCC = 3.3V, symmetrical output drive (|IOH| = IOL = 4 mA min), and power-down protection enabling safe operation with floating or overvoltage inputs in mixed-voltage memory address/data bus applications.

For engineers reviewing the 74LVX16244TTR datasheet, 74LVX16244TTR pinout, 74LVX16244TTR application, or 74LVX16244TTR equivalent, key selection criteria include 5V input tolerance, 2V–3.6V operating range, high-impedance output control per 4-bit group, low ICC = 4 µA max, and TSSOP-48 package compatibility with space-constrained PCB layouts.

Technical Context

This device implements four independent 4-bit non-inverting buffer groups, each controlled by a dedicated active-low output enable (nG) input. All inputs accept 0–5.5V regardless of VCC, enabling robust interfacing between legacy 5V logic and modern 3.3V systems without external clamping.

It uses sub-micron C2MOS technology to achieve balanced propagation delays (tPLH ≅ tPHL), low noise (VOLP = 0.3V typ.), and latch-up immunity. Power-down protection ensures inputs/outputs remain high-impedance and undamaged when VCC = 0V, supporting hot-swap and partial-power-down system architectures.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	2.0–3.6V operational; supports 1.2V data retention during standby
tPD (Propagation Delay)	5.3 ns typ. at VCC = 3.3V, CL = 15 pF - enables ≤100 MHz bus timing margins
Input Voltage Tolerance	0–5.5V DC on all inputs - eliminates level-shifters in 5V-to-3.3V interface paths
Output Drive Strength	±4 mA min. (IOH/IOL) - drives standard CMOS loads across full temperature range
ICC (Quiescent Current)	4 µA max. at TA = 25°C - reduces static power in battery-backed or always-on subsystems
ESD Immunity	2 kV HBM - protects against handling damage without external TVS diodes
VOLP (Quiet Output Noise)	0.3V typ. at VCC = 3.3V, CL = 50 pF - minimizes ground bounce in dense parallel buses

Pinout & Package

TSSOP-48 (Thin Shrink Small Outline Package), 0.5 mm pitch, 12.6 mm × 8.1 mm body size, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 24, 25, 48	nG (Group Output Enable)	Active-low control for 4-bit output group (1G→1Y1–1Y4; 2G→2Y1–2Y4; etc.)
2–3, 5–6, 8–9, 11–12, 13–14, 16–17, 19–20, 22–23, 26–29, 32–35, 37–40, 43–46	Yn (Data Outputs)	Non-inverting buffered outputs; high-impedance when corresponding nG = HIGH
30, 29, 27, 26, 36, 35, 33, 32, 41, 40, 38, 37, 47, 46, 44, 43	An (Data Inputs)	5V-tolerant inputs; accept 0–5.5V regardless of VCC state
4, 10, 15, 21, 28, 34, 39, 45	GND	Eight ground connections - reduce ground bounce and improve signal integrity
7, 18, 31, 42	VCC	Four power supply pins - lower IR drop and stabilize internal rail under switching load

Key Features

Feature	Design Value
5V-tolerant inputs	Enables direct connection to 5V microcontrollers or legacy peripherals without external resistors or translators
Independent 4-bit group enables	Allows selective activation of memory address/data lanes to minimize bus contention and dynamic power
Power-down protection	Permits safe operation with VCC = 0V while inputs/outputs tolerate up to 7V - critical for hot-plug and partial-power systems
Symmetrical output impedance	Ensures matched rise/fall times and reduced skew across all 16 outputs, improving timing closure in wide buses
Low dynamic noise (VOLP)	0.3V typical quiet-output noise limits simultaneous switching output (SSO) effects in high-density PCB routing

Applications

Memory Address Buffering

Industrial PLC Backplane Interface

Use Scenario: Driving 16-bit address lines from a 3.3V microcontroller to multiple 5V SRAM or EPROM devices on a shared bus.

IC Role / Device Role / Timing Role: Non-inverting 3-state buffer with per-group enable, providing voltage translation and bus isolation.

Use Value: Eliminates discrete level shifters and reduces BOM count while maintaining tPD ≤ 5.3 ns for cycle-accurate addressing.

Use Scenario: Interfacing a 3.3V FPGA I/O bank to legacy 5V I/O modules in modular industrial controllers.

IC Role / Device Role / Timing Role: Voltage-tolerant bus driver enabling bidirectional signal conditioning without direction control logic.

Use Value: Supports hot-swap capability via power-down protection and withstands field-induced transients up to ±2 kV HBM.

Automotive Infotainment Data Bus

Test Equipment Signal Conditioning

Use Scenario: Isolating and buffering parallel audio codec control registers between a 3.3V SoC and 5V analog front-end ICs.

IC Role / Device Role / Timing Role: Low-noise 3-state buffer minimizing VOLP-induced jitter on sensitive analog control lines.

Use Value: Achieves 0.3V typical quiet-output noise, reducing register miswrites caused by SSO-induced ground bounce.

Use Scenario: Driving calibration reference signals from a 3.3V DAC to multiple 5V test instrument channels with precise timing alignment.

IC Role / Device Role / Timing Role: Skew-controlled bus buffer ensuring matched tPLH/tPHL across all 16 outputs.

Use Value: Delivers tOSLH ≤ 1.5 ns skew, enabling synchronized multi-channel stimulus generation within ±1 ns window.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16244ADGGR	Lower VCC range (1.65–3.6V); no 5V input tolerance - requires external clamping for 5V inputs	Not suitable for direct 5V-to-3.3V interface; limited to pure 3.3V systems	Select only if system operates exclusively at 3.3V and cost is prioritized over interface flexibility
74ALVC16244PW	Faster tPD = 3.3 ns (typ.); higher ICC = 10 µA max; 5V-tolerant inputs retained	Better timing margin but higher static power - trade-off for high-speed test equipment	Prefer when propagation delay < 4 ns is required and thermal budget allows +6 µA quiescent current increase

Compared with SN74LVC16244ADGGR and 74ALVC16244PW, the 74LVX16244TTR uniquely balances 5V input tolerance, ultra-low ICC (4 µA), and robust power-down protection - making it optimal for mixed-voltage embedded systems where reliability and standby power are critical.

Availability

74LVX16244TTR is available at Aetrix Electronics and suitable for memory address buffering, industrial PLC backplane interfaces, automotive infotainment data buses, and test equipment signal conditioning requiring stable component supply and long-term obsolescence management.

Supply support for 74LVX16244TTR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with strong emphasis on reliability and longevity.

The LVX logic family targets low-voltage, mixed-signal interfacing applications where 5V tolerance, low power, and robust ESD performance are essential - particularly in legacy-system upgrades and industrial control environments.

FAQ

Can 74LVX16244TTR operate with VCC = 2.5V?

Yes. The device is fully specified from VCC = 2.0V to 3.6V. At 2.5V, VIH = 1.5V and VIL = 0.5V are guaranteed, and tPD increases to 8.6 ns (max) at CL = 50 pF. All DC parameters including IOH/IOL and ICC remain valid across this range.

What happens to outputs when VCC = 0V and inputs are at 5V?

Outputs remain in high-impedance state with no current flow due to built-in power-down protection. Inputs tolerate 0–7V regardless of VCC, and internal clamp diodes prevent damage - enabling safe hot-insertion into powered-backplane systems.

How many output groups does 74LVX16244TTR support?

Four independent 4-bit groups: Group 1 (pins 1G, 1Y1–1Y4, 1A1–1A4), Group 2 (2G, 2Y1–2Y4, 2A1–2A4), Group 3 (3G, 3Y1–3Y4, 3A1–3A4), and Group 4 (4G, 4Y1–4Y4, 4A1–4A4). Each group has dedicated enable and isolated signal paths.

Is 74LVX16244TTR pin-compatible with 74LVTH16244?

No. While both are 16-bit non-inverting buffers in TSSOP-48, 74LVTH16244 uses different pin mapping: its GND/VCC distribution and group enable locations differ, and it lacks 5V input tolerance. Direct replacement requires PCB redesign and signal re-routing.

74LVX16244TTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74LVX

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:: 4mA, 4mA

Voltage - Supply:: 2V ~ 3.6V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74LVX16244TTR FAQ

1.How can I place an order for 74LVX16244TTR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVX16244TTR 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 74LVX16244TTR reliable?

The price and inventory of 74LVX16244TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVX16244TTR is usually 5 days.

3.What payment methods are accepted for 74LVX16244TTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVX16244TTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVX16244TTR?

74LVX16244TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVX16244TTR 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 74LVX16244TTR?

For technical support, including 74LVX16244TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVX16244TTR requirements.

6.How does Aetrix verify that 74LVX16244TTR is sourced from the original manufacturer or authorized distributors?

All 74LVX16244TTR 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 74LVX16244TTR meets industry standards.

7.What is the process for return or replacement of 74LVX16244TTR?

All 74LVX16244TTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVX16244TTR, 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 74LVX16244TTR part is unused and in its original packaging.

Return procedure for 74LVX16244TTR:

1.Submit a request within 90 days.

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

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