onsemi 74ALVC16244MTD

Overview

74ALVC16244MTD from onsemi is a low-voltage 16-bit non-inverting buffer/line driver with 3-STATE outputs, designed for memory/address bus driving and clock distribution in 1.65 V–3.6 V systems. It features nibble-level (4-bit) independent 3-STATE control, 3.6 V tolerant I/O, and propagation delay as low as 1.3 ns at 3.3 V.

For engineers reviewing the 74ALVC16244MTD datasheet, pinout, applications, or equivalent options, key selection criteria include voltage tolerance, enable timing (tPZL/tPLZ), output drive strength (±24 mA), input leakage (<5 µA), and TSSOP-48 thermal and layout compatibility.

Technical Context

The 74ALVC16244MTD implements sixteen independent CMOS buffer stages grouped into four 4-bit nibbles, each with dedicated active-low OE inputs (OE1–OE4). Its 3-STATE logic enables bidirectional bus arbitration without external direction control.

It operates across 1.65 V–3.6 V V_CC, maintains high-impedance I/O during power-off, and incorporates patented noise/EMI reduction circuitry. Input thresholds scale with V_CC (VIH = 0.65×V_CC min at 1.65 V), ensuring robust noise margins across supply voltages.

Key Specifications

Pinout & Package

TSSOP-48 package (Case 948BQ), 12.5 mm × 6.1 mm body, 0.5 mm pitch, exposed pad not present, JEDEC-compliant footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buffer/line driver applications.

Compared with SN74ALVC16244DGGR, the 74ALVC16244MTD offers identical functionality and drop-in compatibility; versus 74LVC16244APAG, it provides broader voltage tolerance and faster timing-critical for interoperability with 3.6 V tolerant peripherals and high-speed address strobes.

Availability

74ALVC16244MTD is available at Aetrix Electronics and suitable for memory subsystems, industrial backplanes, and legacy parallel interface extensions requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.

Supply support for 74ALVC16244MTD 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The ALVC logic family targets high-speed, low-voltage digital interfacing with enhanced noise immunity and mixed-voltage compatibility-designed specifically for next-generation embedded controllers and modular system interconnects.

FAQ

What is the maximum operating voltage for 74ALVC16244MTD inputs and outputs?

The 74ALVC16244MTD supports 3.6 V tolerant inputs and outputs across its entire 1.65 V–3.6 V V_CC range. This means I/O pins can safely accept or drive signals up to 3.6 V regardless of V_CC level-enabling direct interfacing with 3.3 V peripherals and simplifying mixed-voltage board design. Absolute maximum ratings specify −0.5 V to +4.6 V for DC input voltage, but sustained operation above 3.6 V violates the 3.6 V tolerance guarantee defined in the datasheet.

Can all four OE inputs of 74ALVC16244MTD be tied together for full 16-bit control?

Yes, the 74ALVC16244MTD datasheet explicitly states that OE1–OE4 may be shorted together to achieve full 16-bit 3-STATE operation. This configuration reduces control signal count and simplifies FPGA or microcontroller GPIO usage. When tied, all 16 outputs respond simultaneously to a single active-low enable signal-maintaining consistent timing (t_PZL/t_PLZ within spec) and eliminating nibble skew concerns in synchronous bus applications.

Does 74ALVC16244MTD support live insertion in backplane systems?

Yes, the 74ALVC16244MTD supports live insertion and withdrawal per its datasheet features. Its power-off high-impedance inputs and outputs prevent bus contention during hot-swap events. To ensure reliable high-Z behavior during power-up/down, OE should be tied to V_CC via a pull-up resistor-minimum value determined by the driver's current-sourcing capability-as specified in the Functional Description section.

What is the typical input capacitance of 74ALVC16244MTD and why does it matter?

The 74ALVC16244MTD has a typical input capacitance (C_IN) of 6 pF at 3.3 V, measured at 25°C. This low value minimizes loading on upstream drivers-especially critical in high-speed clock distribution or fan-out scenarios where cumulative capacitance can degrade edge rates and increase jitter. Combined with 7 pF C_OUT, it enables clean signal integrity across PCB traces up to 15 cm at 100 MHz without termination.

Is 74ALVC16244MTD compliant with modern environmental standards?

Yes, the 74ALVC16244MTD is a Pb-free device compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE). The "MTD" suffix denotes the Pb-free TSSOP-48 package, and onsemi confirms full compliance in its material declarations and packaging specifications.