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

Diodes Incorporated PI74ALVCH16244A

Name: PI74ALVCH16244A
Brand: Diodes Incorporated
SKU: PI74ALVCH16244A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74ALVCH16244A

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: PI74ALVCH16244A.pdf

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

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Product details

Overview

PI74ALVCH16244A from Pericom Semiconductor is a 16-bit non-inverting 3-state buffer/driver operating at 2.3V–3.6V V_CC, featuring Bus Hold inputs, symmetrical active-low OE controls, and 48-pin TSSOP packaging. It delivers 3.3V-compatible logic-level translation with <0.8V output ground bounce and <2.0V VOH undershoot, used in memory address buffering, clock distribution, and high-density bus interfacing.

For engineers reviewing the PI74ALVCH16244A datasheet, PI74ALVCH16244A pinout, PI74ALVCH16244A application, or PI74ALVCH16244A equivalent, key selection criteria include 3-state drive capability, Bus Hold input retention, V_CC voltage range compatibility, and TSSOP-48 thermal and layout constraints.

Technical Context

This device implements four independent 4-bit non-inverting buffers, each with dedicated active-low output-enable (OE) control. All inputs include hysteresis and Bus Hold circuitry to maintain last valid state during high-impedance transitions, eliminating external bias resistors.

It supports mixed-voltage system interfacing via 3.3V-tolerant I/O with ±0.5V input/output voltage ranges relative to V_CC, and meets industrial temperature requirements (–40°C to +85°C) with propagation delays as low as 2.5ns (typical) at 3.3V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3V to 3.6V - Enables direct interface with 2.5V/3.3V logic domains without level shifters.
Propagation Delay	2.5ns (typ) at V_CC = 3.3V - Supports >300MHz bus operation with tight timing margins.
Output Ground Bounce (V_OLP)	<0.8V at V_CC = 3.3V - Reduces noise coupling into shared V_CC/GND planes.
Bus Hold Current	±4µA (max) at V_IN = 0.2V/0.8V - Maintains stable input state without pull-up/down resistors.
Operating Temperature	–40°C to +85°C - Qualified for industrial-grade embedded control and telecom infrastructure.
I/O Voltage Range	–0.5V to V_CC + 0.5V - Allows safe interfacing with overvoltage-tolerant peripherals.
DC Output Drive	±24mA (min) at V_CC = 3.3V - Drives up to 10 LVTTL loads per output.

Pinout & Package

Package: 48-pin plastic TSSOP (A), 12.6mm × 6.2mm × 1.2mm body, 0.5mm pitch, JEDEC MO-153 compliant.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE, 3OE, 4OE	Active-low output enable	Independent control of each 4-bit buffer group; must be pulled high via resistor during power-up to ensure 3-state default.
1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4	Data inputs	16 total inputs with Bus Hold and hysteresis; retain last logic state when floating.
1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4	Non-inverting buffered outputs	16 3-state outputs; sink/source ≥24mA; support parallel bus loading and fan-out expansion.
V_CC (Pins 9, 10, 25, 26, 37, 38, 47, 48)	Power supply	Eight distributed V_CC pins reduce IR drop and improve decoupling effectiveness across wide bus.
GND (Pins 4–8, 19–23, 34–36, 44–46)	Ground reference	Twelve GND pins minimize ground bounce and provide low-inductance return paths for all outputs.

Key Features

Feature	Design Value
Bus Hold inputs	Eliminates need for external pull-up/down resistors on data/address lines, reducing BOM count and board space.
Symmetrical active-low OE	Four independent OE pins allow granular 4-bit group control, enabling partial bus isolation without full reconfiguration.
Hysteresis on all inputs	Improves noise immunity against slow-rising/falling signals in noisy industrial environments (e.g., motor drives).
Low ground bounce (V_OLP)	Ensures signal integrity on shared power rails by limiting transient voltage spikes during simultaneous output switching.
Industrial temperature range	Validated operation from –40°C to +85°C enables deployment in base stations, PLCs, and automotive ECUs.

Applications

Memory Address Buffering

Clock Distribution Network

Use Scenario: Driving 16-bit address buses between microcontroller and SRAM/Flash in space-constrained industrial controllers.

IC Role / Device Role / Timing Role: Non-inverting 3-state buffer with Bus Hold, isolating CPU from memory during DMA cycles.

Use Value: Prevents address line floating during bus contention; eliminates 16 external pull-up resistors and reduces layout complexity.

Use Scenario: Fan-out of a single system clock to multiple synchronous peripherals (ADCs, DACs, FPGAs) in test equipment.

IC Role / Device Role / Timing Role: Low-skew, low-bounce clock driver with independent OE control per 4-bit segment.

Use Value: Delivers sub-3ns propagation delay consistency across all outputs, maintaining setup/hold timing across multi-device clock trees.

High-Density Data Bus Interface

Legacy Bus Signal Translation

Use Scenario: Interfacing a 3.3V FPGA I/O bank to a 2.5V ASIC data bus in telecom line cards.

IC Role / Device Role / Timing Role: Voltage-tolerant bidirectional buffer enabling level-shifting without external translators.

Use Value: Supports V_CC = 2.5V operation while accepting 3.3V inputs, simplifying mixed-voltage interconnect design.

Use Scenario: Replacing obsolete 74ALVC16244 in legacy PC motherboard designs requiring backward-compatible pinout.

IC Role / Device Role / Timing Role: Drop-in compatible 16-bit buffer with enhanced Bus Hold and lower ground bounce.

Use Value: Maintains identical pin mapping and timing behavior while improving signal integrity and reducing external component count.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit non-inverting 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALVCH16244DGGR	TI part with identical pinout, same V_CC range (2.3–3.6V), but no Bus Hold; requires external pull-ups.	Lacks input state retention; unsuitable where floating inputs occur during hot-swap or power sequencing.	Select if Bus Hold is unnecessary and TI supply chain preference applies.
74LVC16244APAG	IDT part with 1.65–3.6V V_CC, Bus Hold, but slower max speed (t_PD = 4.2ns vs. 2.5ns typ) and higher ground bounce (V_OLP = 1.2V).	Lower speed margin limits use in >200MHz systems; higher bounce affects noise-sensitive analog co-location.	Select only for cost-sensitive, lower-frequency applications where TI/IDT sourcing is prioritized.

Compared with SN74ALVCH16244DGGR and 74LVC16244APAG, PI74ALVCH16244A uniquely combines Bus Hold, sub-3ns propagation, and <0.8V ground bounce-critical for high-reliability, high-speed industrial bus interfaces where input stability and signal integrity are non-negotiable.

Availability

PI74ALVCH16244A is available at Aetrix Electronics and suitable for memory address buffering, clock distribution networks, and high-density data bus interfacing requiring stable component supply and long-term industrial lifecycle support.

Supply support for PI74ALVCH16244A 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

Pericom Semiconductor was a fabless provider specializing in high-speed interface, timing, and signal-integrity solutions before its acquisition by Diodes Incorporated in 2016.

This device belongs to Pericom's ALVCH logic family, engineered for low-voltage, high-density bus driving in industrial and telecom infrastructure where noise immunity and power efficiency are critical.

FAQ

What is the recommended pull-up resistor value for OE pins during power-up?

A minimum 10kΩ pull-up resistor to V_CC is required on each OE pin to guarantee high-impedance output state at power-on. This value ensures reliable current sinking (<40µA) while accommodating worst-case V_CC ramp rates and ambient temperature extremes across the –40°C to +85°C range.

Does PI74ALVCH16244A support hot insertion?

No-hot insertion is not supported. The absolute maximum input voltage rating is V_CC + 0.5V, and applying signals before V_CC stabilization risks latch-up or permanent damage. Power sequencing must ensure V_CC is stable before any input or output signal is applied.

How does Bus Hold affect input leakage current?

Bus Hold adds ±4µA (max) DC input current at V_IN = 0.2V or 0.8V, measured per input. This is fully characterized in the DC Electrical Characteristics table and remains within specified I_IN limits across temperature and voltage, ensuring compatibility with upstream drivers' fan-out capacity.

Can PI74ALVCH16244A drive 50Ω transmission lines directly?

No-it is not designed for 50Ω line driving. Its output structure targets LVTTL/LVCMOS loads (≥10pF, ≤100mV overshoot). For 50Ω PCB traces, external series termination (e.g., 33Ω) is required to suppress reflections, as confirmed by typical VOHV undershoot measurements of <2.0V at 3.3V.

PI74ALVCH16244A Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74ALVCH

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:: 2.3V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

PI74ALVCH16244A FAQ

1.How can I place an order for PI74ALVCH16244A through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74ALVCH16244A 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 PI74ALVCH16244A reliable?

The price and inventory of PI74ALVCH16244A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74ALVCH16244A is usually 5 days.

3.What payment methods are accepted for PI74ALVCH16244A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74ALVCH16244A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74ALVCH16244A?

PI74ALVCH16244A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74ALVCH16244A 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 PI74ALVCH16244A?

For technical support, including PI74ALVCH16244A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74ALVCH16244A requirements.

6.How does Aetrix verify that PI74ALVCH16244A is sourced from the original manufacturer or authorized distributors?

All PI74ALVCH16244A 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 PI74ALVCH16244A meets industry standards.

7.What is the process for return or replacement of PI74ALVCH16244A?

All PI74ALVCH16244A units undergo pre-shipment inspection (PSI). If there is an issue with PI74ALVCH16244A, 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 PI74ALVCH16244A part is unused and in its original packaging.

Return procedure for PI74ALVCH16244A:

1.Submit a request within 90 days.

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

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