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

Diodes Incorporated PI74AVC+16244K

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

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Part No.:: PI74AVC+16244K

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-TFSOP (0.173", 4.40mm Width)

Datasheet:: PI74AVC+16244K.pdf

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

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Product details

Overview

PI74AVC+16244K from Diodes Incorporated is a 16-bit non-inverting buffer/line driver with 3-state outputs, designed for voltage-level translation between 1.2V–3.6V buses. It features four independent 4-bit groups (1A–4A inputs, 1Y–4Y outputs), individual output-enable controls (1OE–4OE), ±24mA drive strength at 1.8V, and supports hot-swap and I^OFF partial-power-down protection. Used in memory interface expansion and FPGA I/O bridging.

For engineers reviewing the PI74AVC+16244K datasheet, PI74AVC+16244K pinout, PI74AVC+16244K application, or PI74AVC+16244K equivalent, key selection criteria include per-group 3-state control granularity, bidirectional voltage translation capability, I^OFF isolation during power-off, and TSSOP-48 thermal performance under 1.8V/2.5V mixed-voltage operation.

Technical Context

This device implements sixteen low-voltage CMOS buffers with independent enable logic per 4-bit channel. Each group (e.g., 1A1–1A4 → 1Y1–1Y4) operates with separate OE control (1OE–4OE), enabling selective bus segmentation without global latch-up risk. Input thresholds are referenced to V_CC, supporting TTL- and CMOS-compatible signaling across supply voltages.

It integrates power-off protection: when V_CC = 0V, all inputs and outputs enter high-impedance state regardless of OE status, preventing back-driving of powered subsystems. Propagation delay is ≤2.9ns (V_CC = 2.5V, CL = 15pF), and output skew across a group is ≤0.3ns - critical for parallel data integrity in DDR memory interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.2V to 3.6V - enables direct interfacing between 1.2V ASIC cores and 3.3V legacy peripherals.
Output Drive Strength	±24mA at V_CC = 1.8V - sufficient to drive 50Ω transmission lines or 10cm PCB traces without external termination.
Propagation Delay	≤2.9ns (V_CC = 2.5V, CL = 15pF) - supports >300MHz data rates in synchronous bus applications.
I^OFF Protection	Active at V_CC = 0V - blocks current flow from live inputs/outputs into unpowered IC, satisfying JEDEC JESD78 Class II requirements.
Input Hysteresis	Typ. 150mV - rejects noise on slow-rising control signals (e.g., reset or enable lines) without external Schmitt triggers.
ESD Rating	±8kV HBM - meets industrial-grade robustness for board-level handling and system integration.

Pinout & Package

PI74AVC+16244K is housed in a 48-pin TSSOP package (JEDEC MO-153, 12.6mm × 6.1mm × 1.2mm max height) with 0.5mm pitch, optimized for automated SMT assembly and thermal dissipation in dense PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE, 3OE, 4OE	Group Output Enable (active-low)	Independent control per 4-bit channel; asserts high-impedance on corresponding Y outputs when high.
1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4	Buffer Inputs	16 total inputs; each maps 1:1 to its Y output within same group (e.g., 1A1 → 1Y1).
1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4	Buffer Outputs	16 non-inverting, 3-state outputs; driven only when respective OE is low.
V_CC (Pins 13, 14, 27, 28, 41, 42)	Power Supply	Six dedicated V_CC pins reduce IR drop and improve noise immunity across wide bus.
GND (Pins 12, 26, 40, 48)	Ground Reference	Four GND pins provide low-inductance return paths for all output groups and minimize ground bounce.

Key Features

Feature	Design Value
Per-group 3-state control	Four independent OE pins allow dynamic partitioning of 16-bit bus into four isolated 4-bit segments.
Voltage translation capability	Inputs accept 1.2V–3.6V logic levels while outputs swing rail-to-rail at V_CC, enabling mixed-supply interconnect.
I^OFF circuitry	Prevents current leakage when V_CC is unpowered - essential for hot-plug and partial-power-down systems.
Low dynamic power consumption	Typ. 1.5μA ICC at 2.5V standby - reduces quiescent load in battery-backed or always-on subsystems.
Flow-through pinout layout	Input and output pins arranged on opposite sides (e.g., A1–A4 left, Y1–Y4 right) simplifies PCB routing and minimizes crosstalk.

Applications

Memory Interface Expansion

FPGA I/O Bridging

Use Scenario: Expanding 16-bit SRAM or NOR flash data bus from microcontroller with limited native I/O count.

IC Role / Device Role / Timing Role: Non-inverting buffer with per-group OE allows interleaved access to two memory banks without bus contention.

Use Value: Enables simultaneous address/data multiplexing and eliminates need for discrete level shifters or CPLD glue logic.

Use Scenario: Interfacing Xilinx Artix-7 FPGA bank (1.8V) to legacy 3.3V peripheral UART, SPI, or GPIO headers.

IC Role / Device Role / Timing Role: Voltage-translating buffer ensures setup/hold timing compliance across supply domains with <2.9ns propagation delay.

Use Value: Eliminates external resistive dividers or dual-supply translators, reducing BOM cost and board area by 35%.

Industrial PLC Backplane

Automotive ADAS Sensor Hub

Use Scenario: Isolating modular I/O cards (24V digital input modules) from 3.3V controller CPU via optocoupler-driven 16-bit parallel bus.

IC Role / Device Role / Timing Role: 3-state buffering synchronizes data sampling across multiple cards using shared clock and OE strobes.

Use Value: I^OFF protection prevents backfeed from powered sensor modules into unpowered CPU during hot-swap maintenance.

Use Scenario: Aggregating LVDS camera streams (via deserializer) into MIPI CSI-2 host processor requiring 1.2V/1.8V level compatibility.

IC Role / Device Role / Timing Role: Acts as parallel data formatter and voltage translator between deserializer output and SoC parallel interface.

Use Value: Supports <300Mbps aggregate throughput per group with sub-0.3ns output skew, preserving pixel alignment across multi-lane capture.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVC16244DGGR	Same pinout and function but TI's version lacks I^OFF protection below 1.5V; max V_CC = 3.6V identical.	Not suitable for true zero-V_CC hot-swap scenarios where back-current must be blocked.	Select if sourcing from TI-authorized channels and I^OFF is not required.
74LVC16244APAG	NXP part uses LVC core: higher drive (±24mA @ 3.3V) but narrower V_CC range (1.65–3.6V); no I^OFF at 0V.	Cannot operate below 1.65V - excludes 1.2V/1.5V core logic domains supported by PI74AVC+16244K.	Choose only for 3.3V-only systems needing marginally faster t_PZL (2.3ns vs. 2.9ns).

Compared with SN74AVC16244DGGR and 74LVC16244APAG, PI74AVC+16244K uniquely delivers guaranteed I^OFF at 0V V_CC and full 1.2V–3.6V operation - making it the sole option for mixed-voltage hot-swap architectures requiring fail-safe isolation.

Availability

PI74AVC+16244K is available at Aetrix Electronics and suitable for memory interface expansion, FPGA I/O bridging, industrial PLC backplanes, and automotive ADAS sensor hubs requiring stable component supply across extended temperature ranges (–40°C to +85°C).

Supply support for PI74AVC+16244K 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with design centers in Asia, Europe, and the US, serving industrial, computing, and automotive markets.

The PI74AVC+16244K belongs to Diodes' AVC (Advanced Very-low-voltage CMOS) family, engineered for high-speed, low-voltage translation in space-constrained embedded systems where power efficiency and signal integrity are critical.

FAQ

Does PI74AVC+16244K support hot-swap insertion while system power is active?

Yes. Its I^OFF circuitry ensures all inputs and outputs remain in high-impedance state when V_CC = 0V, preventing back-current flow from live signal lines into an unpowered device. This satisfies JEDEC JESD78 Class II latch-up immunity requirements during hot-swap events.

Can PI74AVC+16244K translate from 3.3V inputs to 1.8V outputs?

No. It does not perform down-translation. Inputs must be referenced to the same V_CC supply that powers the outputs. However, it accepts 3.3V-tolerant inputs when V_CC = 1.8V (with internal clamping), allowing safe connection to higher-voltage drivers while driving 1.8V loads.

What is the maximum clock frequency supported for burst-mode data transfer?

Based on propagation delay (≤2.9ns at V_CC = 2.5V, CL = 15pF) and output skew (≤0.3ns), the device supports reliable burst-mode operation up to 300MHz for aligned 16-bit parallel transfers, assuming controlled impedance routing and proper termination.

Are the OE pins 5V-tolerant when V_CC = 1.8V?

No. OE pins are not 5V-tolerant. Their absolute maximum rating is V_CC + 0.5V. When operating at 1.8V V_CC, OE must be driven between 0V and 2.3V. For 5V control logic, a resistor divider or level-shifter is required.

PI74AVC+16244K Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74AVC+

Package/Case:: 48-TFSOP (0.173", 4.40mm 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+16244K FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your PI74AVC+16244K 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+16244K?

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

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

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

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

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

Return procedure for PI74AVC+16244K:

1.Submit a request within 90 days.

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

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