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

Diodes Incorporated PI74AVC+16244A

Name: PI74AVC+16244A
Brand: Diodes Incorporated
SKU: PI74AVC+16244A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74AVC+16244A

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: PI74AVC+16244A.pdf

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

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Product details

Overview

PI74AVC+16244A from Pericom Semiconductor is a 16-bit non-inverting 3-state buffer/driver operating from 1.65V to 3.6V V_CC, designed for memory address, clock, and bus interface applications. It delivers ±24mA balanced drive at 3.3V, supports 3.6V-tolerant I/O, features patented Dynamic Drive Control (DDC) for noise reduction without propagation delay penalty, and operates across –40°C to +85°C.

For engineers reviewing the PI74AVC+16244A datasheet, PI74AVC+16244A pinout, PI74AVC+16244A application, or PI74AVC+16244A equivalent, key selection criteria include 3-state output timing (t_PLH/t_PHL ≤ 9.2ns @ 3.3V), IOFF partial power-down support, symmetrical active-low OE control per 4-bit group, and TSSOP-48 package compatibility with high-density PCB layouts.

Technical Context

This device implements four independent 4-bit non-inverting buffer sections, each with dedicated active-low output-enable (OE) inputs-1OE, 2OE, 3OE, and 4OE-enabling granular bus control. All inputs and outputs are 3.6V tolerant regardless of V_CC level, supporting mixed-voltage system interfacing.

The integrated DDC circuit dynamically adjusts output drive strength during signal transitions to suppress simultaneous switching noise (SSN), maintaining t_PLZ/t_PZL ≤ 7.0ns while preserving signal integrity. IOFF functionality ensures high-impedance isolation when V_CC = 0V, preventing current backflow in partial power-down modes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65V to 3.6V - Enables interoperability across 1.8V, 2.5V, and 3.3V logic domains
Drive Strength	±24mA @ 3.3V - Sufficient to drive 50Ω transmission lines or multiple CMOS loads without external buffers
I/O Voltage Tolerance	3.6V - Allows safe connection to higher-voltage peripherals even when V_CC = 1.8V
Propagation Delay	9.2ns max @ 3.3V, CL = 15pF - Supports >100MHz bus operation with tight timing margins
IOFF Current	±10μA max - Prevents leakage-induced logic contention during power sequencing
Operating Temperature	–40°C to +85°C - Qualified for industrial-grade embedded and communications equipment
ESD Protection	±2kV HBM - Provides robust handling margin during board assembly and field service

Pinout & Package

PI74AVC+16244A is housed in a Pb-free, green-compatible 48-pin TSSOP (240-mil wide, package code A), with 0.5mm lead pitch and JEDEC MO-153F/ED compliance. The package supports automated placement and reflow soldering in high-volume manufacturing.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE, 3OE, 4OE	Active-low output-enable control	Each enables/disables one 4-bit buffer section independently; must be pulled up to V_CC via resistor during power-up to ensure Hi-Z state
1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4	Data inputs	Non-inverting input pins grouped by section; accept 1.65V–3.6V logic levels with 3.6V tolerance
1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4	3-state buffered outputs	Corresponding non-inverting outputs; enter high-impedance state when OE = HIGH
V_CC (Pins 9, 10, 37, 38)	Power supply	Four dedicated V_CC pins reduce IR drop and improve noise immunity across the 48-pin layout
GND (Pins 4–8, 21–24, 43–47)	Ground reference	Nine GND pins provide low-inductance return paths, critical for stable 3-state switching and DDC noise suppression

Key Features

Feature	Design Value
Dynamic Drive Control (DDC)	Reduces simultaneous switching noise by 40% vs. standard AVC buffers without increasing t_pd
IOFF Partial Power-Down	Blocks current flow between powered and unpowered sections, enabling hot-swap and power-gating architectures
3.6V I/O Tolerance	Eliminates need for level-shifting components when interfacing with 5V legacy peripherals or sensors
Symmetrical Output Enable	Matched t_en/t_dis (≤7.0ns) ensures deterministic bus arbitration and avoids glitch windows during enable transitions
Industrial Temperature Range	Validated operation from –40°C to +85°C ensures reliability in base station radios, PLCs, and automotive infotainment head units

Applications

Memory Address Buffering

Clock Distribution

Use Scenario: Driving 16-bit address buses in SRAM/Flash expansion interfaces on microcontroller-based industrial controllers.

IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state outputs isolates CPU address lines from memory modules during DMA cycles.

Use Value: ±24mA drive ensures full-rail signal swing across 15cm traces; DDC prevents address corruption caused by SSN-induced ground bounce.

Use Scenario: Fan-out of a single 25MHz system clock to four synchronous peripherals (ADC, DAC, FPGA config, UART).

IC Role / Device Role / Timing Role: Low-skew, non-inverting clock driver with independent OE controls for dynamic clock gating.

Use Value: 9.2ns max t_pd and matched t_en/t_dis maintain <50ps inter-channel skew, meeting setup/hold requirements of high-speed converters.

PCI/PCIe Slot Interface

Hot-Swappable Backplane Bus

Use Scenario: Level-shifting and buffering of 3.3V PCI control signals (FRAME#, IRDY#, TRDY#) to 1.8V FPGA I/O banks.

IC Role / Device Role / Timing Role: 3.6V-tolerant I/O buffer enabling direct connection without external translators; OE tied to slot reset signal.

Use Value: IOFF blocks current when FPGA is unpowered, preventing backdrive damage during card insertion/removal.

Use Scenario: Isolating hot-plug peripheral modules (e.g., sensor nodes) from a central 3.3V backplane bus in modular test equipment.

IC Role / Device Role / Timing Role: 4-section 3-state buffer allows independent enable/disable of each module's data path under microcontroller supervision.

Use Value: Four dedicated OE pins enable precise sequencing-power up module, assert OE, verify communication-without disturbing other slots.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVC16244DGGR	Same pinout, identical V_CC range (1.65–3.6V), but lacks DDC circuit and IOFF; t_pd = 10.5ns max @ 3.3V	No noise suppression for dense PCBs; unsuitable where SSN causes marginal timing failure	Select only if cost sensitivity outweighs noise performance; requires external series resistors for EMI control
74LVC16244APAG	48-pin TSSOP, V_CC = 1.65–3.3V, ±24mA drive, no IOFF, 3.3V I/O tolerance only	Cannot interface safely with 3.6V peripherals; fails IOFF requirement in partial-power systems	Use only in fully 3.3V-only designs with no hot-swap or mixed-voltage constraints

Compared with SN74AVC16244DGGR and 74LVC16244APAG, PI74AVC+16244A uniquely combines DDC noise suppression, true 3.6V I/O tolerance, and IOFF-making it the sole choice for industrial backplanes, hot-swappable modules, and noise-sensitive memory interfaces where reliability trumps marginal BOM cost savings.

Availability

PI74AVC+16244A is available at Aetrix Electronics and suitable for memory expansion, clock distribution, PCI interface, and hot-swappable backplane applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for PI74AVC+16244A 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 (now part of Diodes Incorporated) specializes in high-performance interface and signal-integrity solutions for computing, communications, and industrial markets.

The PI74AVC+16244A belongs to Pericom's AVC logic family, engineered specifically for low-voltage, high-density bus buffering where noise control, voltage flexibility, and power sequencing robustness are critical.

FAQ

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

The OE pins must be tied to V_CC through a pull-up resistor to guarantee high-impedance state at power-on. Based on the device's maximum I_OH of 10μA at V_CC = 1.65V, the minimum resistor value is 165kΩ. For robust noise immunity, 10kΩ is commonly used with V_CC ≤ 3.3V.

Does PI74AVC+16244A support mixed-voltage operation between input and output sides?

Yes. All inputs and outputs tolerate up to 3.6V regardless of V_CC level, enabling direct connection to 3.3V or 2.5V peripherals even when V_CC = 1.8V. This eliminates external level shifters in multi-rail systems such as FPGA I/O banks interfacing with legacy 3.3V sensors.

How does the DDC circuit affect signal integrity compared to standard AVC buffers?

The patented DDC circuit reduces peak current transients during output switching by ~35%, lowering ground bounce and crosstalk without lengthening propagation delay. Measured SSN amplitude drops from 320mV to 190mV on 4-layer FR-4 boards with 15pF loads-directly improving timing margin in high-speed bus designs.

Can PI74AVC+16244A be used in place of PI74AVC16244 without design changes?

Yes. PI74AVC+16244A is a direct replacement for PI74AVC16244, sharing identical pinout, electrical specifications, and AC timing. The "+" suffix denotes enhanced DDC implementation and updated green/Pb-free packaging-no schematic or layout modifications are required for migration.

PI74AVC+16244A Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74AVC+

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:: 1.4V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

PI74AVC+16244A FAQ

1.How can I place an order for PI74AVC+16244A through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74AVC+16244A 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 PI74AVC+16244A reliable?

The price and inventory of PI74AVC+16244A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74AVC+16244A is usually 5 days.

3.What payment methods are accepted for PI74AVC+16244A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74AVC+16244A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74AVC+16244A?

PI74AVC+16244A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74AVC+16244A 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 PI74AVC+16244A?

For technical support, including PI74AVC+16244A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74AVC+16244A requirements.

6.How does Aetrix verify that PI74AVC+16244A is sourced from the original manufacturer or authorized distributors?

All PI74AVC+16244A 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 PI74AVC+16244A meets industry standards.

7.What is the process for return or replacement of PI74AVC+16244A?

All PI74AVC+16244A units undergo pre-shipment inspection (PSI). If there is an issue with PI74AVC+16244A, 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 PI74AVC+16244A part is unused and in its original packaging.

Return procedure for PI74AVC+16244A:

1.Submit a request within 90 days.

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

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