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

Diodes Incorporated PI74LPT16244AEX

Name: PI74LPT16244AEX
Brand: Diodes Incorporated
SKU: PI74LPT16244AEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74LPT16244AEX

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: PI74LPT16244AEX.pdf

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

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Product details

Overview

PI74LPT16244AEX from Pericom Semiconductor is a 16-bit, 3.3V non-inverting buffer/line driver with quad-nibble/dual-byte/16-bit configurable 3-state control, ±24mA balanced output drive, 4.1ns max propagation delay (LPT16244A grade), and 5V-tolerant inputs for mixed-voltage translation between 3.3V and 5V systems. It drives high-capacitance memory buses and on-board transmission lines with low ground bounce and EMI.

For engineers reviewing the PI74LPT16244AEX datasheet, PI74LPT16244AEX pinout, PI74LPT16244AEX application, or PI74LPT16244AEX equivalent, key selection criteria include 3.3V operation with 5V-tolerant I/O, 24mA sink/source capability, 48-pin TSSOP-A package, industrial temperature range (–40°C to +85°C), and support for bus isolation via independent OE controls.

Technical Context

The PI74LPT16244AEX implements four independent 4-bit buffers, each with dedicated active-low 3-state output enable (1OE–4OE), enabling flexible bus segmentation in memory and address/data path applications. Its advanced low-power CMOS design features hysteresis on all inputs and distributed V_CC/GND pins to suppress switching noise.

It operates across V_CC = 2.7V–3.6V, supports mixed-signal mode (3.3V supply with 5V-tolerant inputs), and delivers guaranteed VOH ≥2.4V at I_OH = –24mA and VOL ≤0.5V at I_OL = 24mA - critical for driving terminated transmission lines and legacy 5V buses.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7V to 3.6V - ensures compatibility with standard 3.3V LVT/LCX systems and tolerance to rail variation.
Output Drive	±24mA - provides robust signal integrity when driving 50Ω transmission lines or high-capacitance memory loads up to 50pF.
Propagation Delay	1.5ns (min) to 4.8ns (max) - enables reliable timing in high-speed address/data buffering up to ~200MHz clock domains.
Input Voltage Tolerance	–0.5V to +7.0V - allows direct interfacing with 5V logic without level-shifting circuitry.
Operating Temperature	–40°C to +85°C - supports deployment in industrial embedded controllers and telecom line cards.
Quiescent Current	0.1µA (typ) - minimizes standby power in battery-backed or always-on system management functions.
Output Skew	≤0.5ns - ensures simultaneous edge alignment across all 16 outputs, critical for synchronous bus timing.

Pinout & Package

Package: 48-pin 240-mil wide thin shrink small-outline package (TSSOP-A), Pb-free and RoHS-compliant, with 0.5mm lead pitch and exposed thermal pad not present.

Pin/Terminal	Circuit Role	Design Meaning
1OE–4OE	Active-low 3-state output enable	Independent control per 4-bit nibble; enables dynamic bus partitioning and hot-swap isolation.
1A0–4A3	Buffer input	16 total inputs grouped as four 4-bit nibbles; accepts 3.3V or 5V logic levels.
1Y0–4Y3	Buffered 3-state output	16 outputs with ±24mA drive; high-impedance state activated by corresponding OE pin.
V_CC (Pins 8, 23, 36, 47)	Power supply	Four distributed V_CC pins reduce IR drop and improve noise immunity during fast switching.
GND (Pins 7, 19, 31, 44)	Ground reference	Four dedicated GND pins minimize ground bounce and stabilize output transitions.

Key Features

Feature	Design Value
Balanced ±24mA Output Drive	Enables matched rise/fall times on transmission lines, reducing reflections and improving signal fidelity.
5V-Tolerant Inputs	Eliminates external level shifters when interfacing with legacy 5V peripherals or microcontrollers.
Hysteresis on All Inputs	Improves noise margin against slow-rising or noisy signals in electrically harsh industrial environments.
Distributed Power/Ground Pins	Reduces simultaneous switching noise (SSN) and maintains stable V_CC/GND references under heavy load.
Industrial Temperature Range	Validated operation from –40°C to +85°C ensures reliability in uncontrolled ambient deployments.

Applications

Memory Bus Buffering

Address/Data Line Driver

Use Scenario: Driving parallel SRAM or Flash memory data/address buses with >30pF trace capacitance and multiple loads.

IC Role / Device Role / Timing Role: Non-inverting 16-bit buffer with independent 3-state control per nibble to isolate memory banks during read/write cycles.

Use Value: 4.8ns max t_PLH/t_PHL and ±24mA drive ensure setup/hold timing margins are maintained at 100MHz bus speeds.

Use Scenario: Interfacing a 3.3V FPGA I/O bank to a 5V peripheral ASIC or legacy controller.

IC Role / Device Role / Timing Role: Voltage-level translator and bus driver with 5V-tolerant inputs and 3.3V-compatible outputs.

Use Value: Eliminates discrete resistor-divider or dedicated level-shifter ICs while preserving signal integrity and timing predictability.

On-Board Transmission Line Driver

Industrial Backplane Interface

Use Scenario: Driving 50Ω-terminated PCB traces longer than 10cm on high-density carrier boards.

IC Role / Device Role / Timing Role: Low-skew (≤0.5ns), low-EMI line driver with matched source/sink strength for impedance-controlled routing.

Use Value: Balanced drive and distributed V_CC/GND pins suppress ground bounce and reduce radiated emissions below CISPR-22 Class B limits.

Use Scenario: Isolating modular I/O cards connected to a central backplane in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: Hot-swap-safe bus interface with per-nibble 3-state enables safe card insertion/removal without disrupting active channels.

Use Value: Independent OE pins allow selective deactivation of affected nibbles during card reconfiguration, preventing bus contention.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer/line driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16244ADGGR	3.3V-only I/O (no 5V tolerance); 24mA drive; 4.2ns max t_P; 48-pin TSSOP	Requires external level shifters for 5V interfaces; lower ESD rating (2kV HBM vs. 4kV)	Select when full 5V-tolerance is unnecessary and cost optimization is prioritized.
74ALVC16244PW	3.3V supply; 5V-tolerant inputs; 24mA drive; 4.5ns max t_P; 48-pin TSSOP	Similar voltage translation capability but higher ICCQ (2µA typ vs. 0.1µA) and no hysteresis	Prefer when legacy NXP footprint compatibility is required and ultra-low quiescent current is not critical.

Compared with SN74LVC16244ADGGR and 74ALVC16244PW, the PI74LPT16244AEX offers superior noise immunity (input hysteresis), lowest quiescent current (0.1µA), and tighter output skew (0.5ns), making it optimal for timing-critical industrial backplanes and mixed-voltage memory subsystems.

Availability

PI74LPT16244AEX is available at Aetrix Electronics and suitable for memory bus buffering, industrial backplane interfaces, on-board transmission line driving, and mixed-voltage FPGA-to-ASIC interconnects requiring stable component supply and long-term lifecycle support.

Supply support for PI74LPT16244AEX 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 of high-performance interface, timing, and signal integrity solutions, acquired by Diodes Incorporated in 2016; its legacy products remain widely deployed in industrial and communications infrastructure.

The PI74LPT16244AEX belongs to the LPT (Low-Power TTL-compatible) family, engineered specifically for low-noise, high-drive 3.3V bus interfacing in mixed-voltage systems where signal integrity and power efficiency are co-prioritized.

FAQ

Can PI74LPT16244AEX operate with a 2.5V supply?

No. The device is specified for V_CC = 2.7V to 3.6V only. At 2.5V, VIH minimum (2.2V) and VOH performance fall outside guaranteed operating conditions, risking logic misreads and reduced noise margin. Operation below 2.7V is not characterized or supported.

What is the maximum capacitive load this device can drive reliably?

The PI74LPT16244AEX is characterized up to 50pF load capacitance with CL = 50pF in switching specifications. Driving >50pF may increase propagation delay beyond 4.8ns and degrade edge monotonicity; for >75pF loads, series termination or reduced slew rate design techniques are recommended.

Are the 3-state outputs truly high-impedance when disabled?

Yes. With xOE = HIGH, output leakage (IOZL/IOZH) is ±1µA maximum over temperature, confirming true high-impedance state. This allows safe wire-ORing and multi-drop bus configurations without contention or excessive standby current.

Does PI74LPT16244AEX support hot-plug operation?

While not explicitly qualified for hot-plug, its 5V-tolerant inputs, hysteresis, and controlled output disable timing (t_PLZ/t_PHZ ≤5.6ns) make it suitable for controlled hot-swap implementations when paired with power sequencing and current-limiting circuitry on the board level.

PI74LPT16244AEX Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74LPT

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:: 24mA, 24mA

Voltage - Supply:: 2.7V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

PI74LPT16244AEX FAQ

1.How can I place an order for PI74LPT16244AEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74LPT16244AEX 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 PI74LPT16244AEX reliable?

The price and inventory of PI74LPT16244AEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LPT16244AEX is usually 5 days.

3.What payment methods are accepted for PI74LPT16244AEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LPT16244AEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74LPT16244AEX?

PI74LPT16244AEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74LPT16244AEX 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 PI74LPT16244AEX?

For technical support, including PI74LPT16244AEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LPT16244AEX requirements.

6.How does Aetrix verify that PI74LPT16244AEX is sourced from the original manufacturer or authorized distributors?

All PI74LPT16244AEX 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 PI74LPT16244AEX meets industry standards.

7.What is the process for return or replacement of PI74LPT16244AEX?

All PI74LPT16244AEX units undergo pre-shipment inspection (PSI). If there is an issue with PI74LPT16244AEX, 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 PI74LPT16244AEX part is unused and in its original packaging.

Return procedure for PI74LPT16244AEX:

1.Submit a request within 90 days.

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

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