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

Diodes Incorporated PI74LPT16244AAE

Name: PI74LPT16244AAE
Brand: Diodes Incorporated
SKU: PI74LPT16244AAE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74LPT16244AAE

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: PI74LPT16244AAE.pdf

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

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Product details

Overview

PI74LPT16244AAE from Pericom Semiconductor is a 16-bit, 3.3V CMOS buffer/line driver with quad-nibble/dual-byte/16-bit configurable 3-state control, ±24 mA balanced output drive, 5V-tolerant inputs, and operation over –40°C to +85°C. It serves as a level-translating bus driver in mixed-voltage memory and address/data bus systems.

For engineers reviewing the PI74LPT16244AAE datasheet, PI74LPT16244AAE pinout, PI74LPT16244AAE application, or PI74LPT16244AAE equivalent, key selection criteria include 3-state enable timing (tPZH/tPHZ ≤ 7.0 ns), low ground bounce, 5V-tolerant I/O compatibility, and TSSOP-48 packaging for high-density PCB layouts.

Technical Context

The device implements four independent 4-bit buffers, each with dedicated active-low 3-state output enable (xOE) and bidirectional voltage-tolerant I/O structure. Its CMOS design supports simultaneous 3.3V supply and 5V-bus interfacing without external level shifters.

Propagation delay (1.5–5.2 ns) and output skew (≤0.5 ns) are specified under CL = 50 pF / RL = 500 Ω conditions, with guaranteed performance across VCC = 2.7–3.6 V and industrial temperature range. Input hysteresis suppresses noise-induced switching.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	2.7 V to 3.6 V - Ensures stable operation in 3.3V ±10% power domains
Output Drive	±24 mA - Supports driving 50-pF transmission lines and memory loads without signal degradation
Input Voltage Tolerance	–0.5 V to +7.0 V - Enables direct connection to 5V buses while powered from 3.3V
Propagation Delay	1.5 ns (min) to 5.2 ns (max) - Meets sub-6 ns timing budgets for high-speed address/data buses
Operating Temperature	–40°C to +85°C - Qualified for industrial-grade embedded and computing applications
Output Skew	≤0.5 ns - Guarantees tight timing alignment across all 16 outputs within one package
Quiescent Current	0.1 µA (typ) - Minimizes standby power in always-on bus interface circuits

Pinout & Package

Package: 48-pin TSSOP (240-mil wide, code A), Pb-free & RoHS-compliant, with distributed VCC/GND pins to reduce switching noise.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE, 3OE, 4OE	Active-low 3-state output enables	Independent control of four 4-bit output groups; enables nibble-, byte-, or full-word bus gating
1A0–1A3, 2A0–2A3, 3A0–3A3, 4A0–4A3	Buffer inputs	16 total inputs; 5V-tolerant, hysteresis-equipped for noise immunity on address/data lines
1Y0–1Y3, 2Y0–2Y3, 3Y0–3Y3, 4Y0–4Y3	3-state buffered outputs	16 total outputs; ±24 mA drive, low ground bounce, matched rise/fall for clean edge integrity
VCC (Pins 8, 23, 32, 47)	Power supply	Four distributed VCC pins minimize IR drop and supply impedance across high-speed switching
GND (Pins 4, 13, 24, 33, 42)	Ground reference	Five GND pins provide low-inductance return paths and reduce ground bounce during simultaneous switching

Key Features

Feature	Design Value
5V-Tolerant I/O	Inputs accept 0–5.5 V logic levels while operating at 3.3 V, eliminating external level translators in mixed-voltage systems
Balanced Output Drive	24 mA sink and source capability ensures symmetrical rise/fall times and reduced signal distortion on stubbed buses
Low Ground Bounce	Distributed power/ground pins and internal layout minimize ΔI/Δt-induced noise during parallel output switching
Hysteresis on All Inputs	Input threshold hysteresis ≥150 mV rejects fast transient noise on memory or control bus lines
Multiple Operating Modes	Configurable via OE pins as quad 4-bit, dual 8-bit, or single 16-bit buffer - adapts to varying bus-width requirements

Applications

Memory Address Bus Driver

PCI/ISA Local Bus Interface

Use Scenario: Driving 16-bit address lines from a 3.3V microcontroller to legacy 5V SRAM or EPROM chips.

IC Role / Device Role / Timing Role: Level-translating buffer with precise propagation delay and low skew to maintain setup/hold timing margins.

Use Value: Eliminates discrete level shifters while meeting <6 ns tPLH/tPHL and <0.5 ns inter-output skew for reliable address decoding.

Use Scenario: Interfacing a 3.3V FPGA I/O bank to a 5V PCI slot data bus with shared control signals.

IC Role / Device Role / Timing Role: Bidirectional bus driver with 5V-tolerant inputs and strong 24 mA outputs for robust signal integrity.

Use Value: Sustains 33 MHz PCI timing with guaranteed tPZH/tPHZ ≤ 7.0 ns and no external pull-ups required.

Embedded System Data Bus Extender

Industrial Control Backplane Interface

Use Scenario: Extending a 16-bit parallel data bus between two PCBs in a modular PLC chassis with 5V backplane rails.

IC Role / Device Role / Timing Role: High-drive line driver with distributed VCC/GND to suppress crosstalk and EMI in noisy environments.

Use Value: Delivers 24 mA drive into 50-pF loads while maintaining <0.4 V VOL at 24 mA, ensuring noise margin >0.8 V.

Use Scenario: Buffering sensor data and control signals across an industrial backplane operating at –40°C to +85°C.

IC Role / Device Role / Timing Role: Industrial-temperature-rated bus repeater with hysteresis-enabled noise immunity on long traces.

Use Value: Maintains valid logic levels despite >200 mV of coupled noise due to input hysteresis and rail-to-rail output swing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16244ADGGR	3.3V-only I/O (no 5V tolerance); 24 mA drive; 48-pin TSSOP; lower max VCC (3.6 V)	Requires external clamping or series resistors when interfacing to 5V buses	Preferred where system uses only 3.3V signaling and cost sensitivity outweighs voltage flexibility
74ALVC16244PW	Wider VCC range (1.65–3.6 V); same 24 mA drive; 48-pin TSSOP; no 5V-tolerant inputs	Limited to single-supply 3.3V or 2.5V systems; not suitable for 3.3V-to-5V translation	Chosen for ultra-low-voltage designs where 1.65V operation is required and 5V bus compatibility is unnecessary

Compared with SN74LVC16244ADGGR and 74ALVC16244PW, PI74LPT16244AAE uniquely supports true 3.3V/5V mixed-mode operation without external components, making it the only option among the three qualified for direct 5V-bus interfacing in industrial temperature ranges.

Availability

PI74LPT16244AAE is available at Aetrix Electronics and suitable for memory subsystems, industrial backplanes, and legacy bus interfaces requiring stable component supply and long-term industrial temperature support.

Supply support for PI74LPT16244AAE 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-speed interface, timing, and signal-integrity solutions, acquired by Diodes Incorporated in 2016; its legacy products remain widely deployed in industrial and computing infrastructure.

The PI74LPT16244 belongs to Pericom's LPT (Low Power TTL-compatible) family, engineered specifically for low-noise, high-drive bus interfacing in mixed-voltage memory and peripheral subsystems.

FAQ

Is PI74LPT16244AAE pin-compatible with standard 48-pin 16-bit buffer footprints?

Yes - it uses industry-standard double-density 48-pin TSSOP (package code A) with identical pinout to JEDEC MS-013AC and compatible with PCB footprints for SN74LVC16244, 74ALVC16244, and other 16-bit buffers in the same package. Pin assignments for xOE, xAx, and xYx match documented Pericom mechanical drawings.

Can PI74LPT16244AAE safely drive a 5V bus while powered at 3.3V?

Yes - its inputs are fully 5V-tolerant (–0.5 V to +7.0 V), and outputs can be directly connected to 5V buses without damage or level-shifting circuitry. The device maintains valid HIGH/LOW logic levels per V_OH ≥ 2.4 V and V_OL ≤ 0.5 V at 24 mA load, even when V_CC = 3.3 V.

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

It is characterized for CL = 50 pF with RL = 500 Ω, delivering 1.5–5.2 ns propagation delay and <0.5 ns output skew. At 24 mA drive strength and low ground bounce design, it reliably drives up to 75 pF loads while maintaining signal integrity and timing margins in typical board-level routing scenarios.

Does PI74LPT16244AAE support hot-swap or live-insertion?

No - it lacks explicit hot-swap protection features such as power-up sequencing control, undervoltage lockout, or slew-rate-limited I/O. While its 5V-tolerant inputs tolerate floating conditions, the device is not rated or tested for live insertion into powered backplanes; use requires system-level safeguards like current-limiting resistors or sequenced power rails.

PI74LPT16244AAE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74LPT

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:: 2.7V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

PI74LPT16244AAE FAQ

1.How can I place an order for PI74LPT16244AAE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74LPT16244AAE 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 PI74LPT16244AAE reliable?

The price and inventory of PI74LPT16244AAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LPT16244AAE is usually 5 days.

3.What payment methods are accepted for PI74LPT16244AAE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LPT16244AAE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74LPT16244AAE?

PI74LPT16244AAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74LPT16244AAE 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 PI74LPT16244AAE?

For technical support, including PI74LPT16244AAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LPT16244AAE requirements.

6.How does Aetrix verify that PI74LPT16244AAE is sourced from the original manufacturer or authorized distributors?

All PI74LPT16244AAE 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 PI74LPT16244AAE meets industry standards.

7.What is the process for return or replacement of PI74LPT16244AAE?

All PI74LPT16244AAE units undergo pre-shipment inspection (PSI). If there is an issue with PI74LPT16244AAE, 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 PI74LPT16244AAE part is unused and in its original packaging.

Return procedure for PI74LPT16244AAE:

1.Submit a request within 90 days.

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

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