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

Diodes Incorporated PI74LPT16244CAE

Name: PI74LPT16244CAE
Brand: Diodes Incorporated
SKU: PI74LPT16244CAE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74LPT16244CAE

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: PI74LPT16244CAE.pdf

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

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Product details

Overview

PI74LPT16244CAE from Pericom Semiconductor is a 3.3V, 16-bit non-inverting buffer/line driver with quad-nibble/dual-byte/16-bit configurable 3-state control. It delivers ±24 mA balanced output drive, supports 3.3V/5.0V mixed-signal translation, and operates across –40°C to +85°C. Used for driving high-capacitance memory buses and on-board transmission lines in embedded memory subsystems.

For engineers reviewing the PI74LPT16244CAE datasheet, PI74LPT16244CAE pinout, PI74LPT16244CAE application, or PI74LPT16244CAE equivalent, key selection factors include 3-state enable timing (tPZH/tPHZ ≤ 5.8/5.2 ns), 5V-tolerant inputs, low ground bounce, and TSSOP-48 package compatibility with LCX/LVT families.

Technical Context

The PI74LPT16244CAE implements four independent 4-bit groups (1A–4A inputs → 1Y–4Y outputs), each controlled by dedicated active-low 3-state enables (1OE–4OE). Its CMOS design features hysteresis on all inputs and distributed V_CC/GND pins to suppress switching noise.

It operates in mixed-voltage mode: inputs accept 3V or 5V logic levels while outputs drive 3V loads or interface directly to 5V buses. Propagation delay is 1.5–4.1 ns (max) at V_CC = 3.3V, CL = 50 pF, and output skew is guaranteed ≤0.5 ns within-package.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7V to 3.6V - Enables stable operation in 3.3V systems with ±0.3V tolerance
Output Drive	±24 mA - Balanced sink/source capability ensures clean signal integrity into 50Ω transmission lines
Propagation Delay	1.5–4.1 ns - Measured xAx→xYx under CL=50 pF, RL=500Ω; supports >200 MHz bus toggling
3-State Enable Time	tPZH ≤ 5.8 ns - Fast output activation critical for burst-mode memory access
Input Voltage Range	–0.5V to +7.0V - 5V-tolerant inputs allow direct interfacing with legacy 5V logic without level shifters
Operating Temperature	–40°C to +85°C - Qualified for industrial-grade embedded and telecom infrastructure use
Input Hysteresis	Present on all inputs - Reduces susceptibility to noise-induced false triggering on slow-rising signals

Pinout & Package

PI74LPT16244CAE is housed in a Pb-free, green 48-pin 240-mil wide thin shrink small-outline package (TSSOP-A), with 0.5 mm pitch, 12.4–12.6 mm length, and 6.0–6.2 mm width. Pin 1 is marked by a notch or dot; pin 1 is 1OE.

Pin/Terminal	Circuit Role	Design Meaning
1OE–4OE	Active-low 3-state output enables	Independent control per 4-bit group; enables partial bus isolation during multi-word transfers
1A0–4A3	Non-inverting digital inputs	16 total inputs grouped as four nibbles; accept 3V/5V logic with hysteresis
1Y0–4Y3	3-state buffered outputs	16 matched outputs with ±24 mA drive; low ground bounce minimizes simultaneous switching noise
V_CC (Pins 8, 23, 36, 47)	Power supply	Four distributed V_CC pins reduce IR drop and improve transient response across the die
GND (Pins 4, 13, 24, 35)	Ground reference	Four distributed GND pins lower ground impedance and suppress common-mode noise

Key Features

Feature	Design Value
Balanced ±24 mA drive	Enables matched rise/fall times on transmission lines, reducing reflections and EMI
5V-tolerant I/O	Allows direct connection to 5V buses without external level shifters in mixed-voltage systems
Distributed power/ground pins	Four V_CC and four GND pins minimize switching noise and improve signal integrity
Hysteresis on all inputs	Increases noise margin for slow or noisy control signals (e.g., reset, chip select)
Low propagation skew	≤0.5 ns max skew between outputs ensures tight timing alignment in parallel data paths

Applications

DDR Memory Bus Driver

PCI/PCI-X Address/Data Buffer

Use Scenario: Driving address and control lines from a 3.3V memory controller to DDR SDRAM modules with 5V-tolerant command buses.

IC Role / Device Role / Timing Role: Non-inverting 16-bit buffer with per-group 3-state control, enabling precise timing-aligned strobe and address latching.

Use Value: ±24 mA drive sustains signal integrity over 10 cm PCB traces; 5V tolerance eliminates need for discrete level shifters.

Use Scenario: Isolating and strengthening PCI/PCI-X address/data bus signals between 3.3V host bridge and legacy 5V peripheral cards.

IC Role / Device Role / Timing Role: Quad-nibble-configurable line driver with fast tPZH/tPHZ (≤5.8/5.2 ns) for cycle-accurate bus arbitration.

Use Value: Distributed V_CC/GND pins suppress ground bounce during concurrent 32-bit bus transitions.

Industrial Backplane Interface

FPGA I/O Expansion Hub

Use Scenario: Interfacing a 3.3V FPGA to a 5V industrial backplane carrying multiple parallel control and status signals.

IC Role / Device Role / Timing Role: Dual-byte mode buffer providing isolated 8-bit bidirectional data lanes with independent OE control.

Use Value: Input hysteresis rejects EMI-coupled noise on long backplane traces; –40°C to +85°C rating ensures field reliability.

Use Scenario: Expanding FPGA GPIO count to drive 16-bit parallel peripherals (e.g., LCD controllers, ADC interfaces) requiring robust drive strength.

IC Role / Device Role / Timing Role: 16-bit line driver with 3-state outputs synchronized to FPGA clock domain via OE signals.

Use Value: Low 4.1 ns max propagation delay supports >200 MHz peripheral clock domains; TSSOP-48 footprint fits dense FPGA carrier boards.

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-tolerant inputs; 24 mA drive; 1.8 ns typical tPLH	Requires external level shifting for 5V bus interfacing; optimized for pure 3.3V LVC systems	Select when system uses only 3.3V logic and minimal propagation delay is prioritized over voltage translation
74ALVC16244PW	3.3V supply; 5V-tolerant inputs; 24 mA drive; 3.5 ns max tPLH; TSSOP-48	Similar mixed-voltage capability but higher max propagation delay; different enable timing specs	Choose if pin-compatible replacement with identical package and voltage tolerance is required, accepting slightly slower timing

Compared with SN74LVC16244ADGGR and 74ALVC16244PW, the PI74LPT16244CAE uniquely combines 5V-tolerant I/O, ultra-low ground bounce, and distributed power/ground architecture-making it optimal for noise-sensitive, mixed-voltage memory and backplane interfaces where signal integrity outweighs marginal speed differences.

Availability

PI74LPT16244CAE is available at Aetrix Electronics and suitable for DDR memory subsystems, PCI/PCI-X bus expansion, and industrial backplane interfaces requiring stable component supply and long-term industrial temperature support.

Supply support for PI74LPT16244CAE 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 2017. Its products targeted enterprise, communications, and industrial markets.

The PI74LPT16244CAE belongs to Pericom's LPT (Low Power TTL-compatible) family, designed specifically for noise-immune, mixed-voltage bus interfacing in memory and interconnect applications.

FAQ

Is PI74LPT16244CAE pin-compatible with standard 16-bit buffer ICs?

Yes - PI74LPT16244CAE uses industry-standard double-density pinout for 48-pin TSSOP packages. It matches pin assignments of compatible devices like 74LVC16244 and 74ALVC16244, including identical 1OE–4OE, 1A0–4A3, and 1Y0–4Y3 placements, enabling drop-in replacement in existing layouts.

Can PI74LPT16244CAE safely interface a 3.3V FPGA to a 5V microcontroller bus?

Yes - its inputs are 5V-tolerant (–0.5V to +7.0V), and outputs can drive 5V-biased buses directly. When powered at 3.3V, it translates 5V input signals to 3.3V logic levels internally, while maintaining full 3.3V output swing - eliminating external level shifters in bidirectional or unidirectional configurations.

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

The PI74LPT16244CAE is characterized up to 50 pF load capacitance with guaranteed timing (tPLH/tPHL ≤ 4.1 ns). With ±24 mA drive strength and low ground bounce, it maintains signal integrity on PCB traces up to ~10 cm in length with typical FR-4 impedance, supporting loads exceeding 75 pF in non-critical timing applications.

Does PI74LPT16244CAE support hot-swap or live-insertion?

No - PI74LPT16244CAE lacks explicit hot-swap protection features such as power-up sequencing control, I_OFF protection, or back-drive immunity. Its IOFF current is ±100 µA at V_CC = 0V, but it is not rated for live insertion into powered backplanes. Use only in systems with controlled power sequencing or external hot-swap controllers.

PI74LPT16244CAE 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

PI74LPT16244CAE FAQ

1.How can I place an order for PI74LPT16244CAE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74LPT16244CAE 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 PI74LPT16244CAE reliable?

The price and inventory of PI74LPT16244CAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LPT16244CAE is usually 5 days.

3.What payment methods are accepted for PI74LPT16244CAE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LPT16244CAE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74LPT16244CAE?

PI74LPT16244CAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74LPT16244CAE 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 PI74LPT16244CAE?

For technical support, including PI74LPT16244CAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LPT16244CAE requirements.

6.How does Aetrix verify that PI74LPT16244CAE is sourced from the original manufacturer or authorized distributors?

All PI74LPT16244CAE 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 PI74LPT16244CAE meets industry standards.

7.What is the process for return or replacement of PI74LPT16244CAE?

All PI74LPT16244CAE units undergo pre-shipment inspection (PSI). If there is an issue with PI74LPT16244CAE, 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 PI74LPT16244CAE part is unused and in its original packaging.

Return procedure for PI74LPT16244CAE:

1.Submit a request within 90 days.

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

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