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

Diodes Incorporated PI74LPT16245CAE

Name: PI74LPT16245CAE
Brand: Diodes Incorporated
SKU: PI74LPT16245CAE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74LPT16245CAE

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: PI74LPT16245CAE.pdf

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

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Product details

Overview

PI74LPT16245CAE from Pericom Semiconductor is a 3.3V 16-bit bidirectional voltage-level transceiver with 5V-tolerant I/O, 24 mA balanced drive strength, and industrial temperature range (–40°C to +85°C), used for asynchronous bus bridging between 3.3V and 5V domains in mixed-voltage embedded systems.

For engineers reviewing the PI74LPT16245CAE datasheet, PI74LPT16245CAE pinout, PI74LPT16245CAE application, or PI74LPT16245CAE equivalent, key selection criteria include bidirectional direction control (xDIR), 3-state output enable (xOE), 5V-tolerant input compatibility, propagation delay ≤4.1 ns, and TSSOP-48 package mechanical fit.

Technical Context

The PI74LPT16245CAE implements dual 8-bit or unified 16-bit bidirectional data transfer via independent xDIR/xOE controls per port pair, supporting mixed-signal operation where inputs accept 3V or 5V logic levels while outputs drive 3.3V buses or interface directly with 5V TTL loads.

Its architecture features hysteresis on all inputs (150 mV), low ground bounce outputs, distributed V_CC/GND pins to suppress switching noise, and clamped I/O (–0.7 V to 5.5 V) enabling safe operation in voltage-translating interfaces without external level-shifting components.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7V–3.6V - Enables stable operation across 3.3V rail tolerances in industrial power supplies.
Propagation Delay	≤4.1 ns (max, LPT16245C) - Supports >200 MHz bus toggle rates in high-speed data path bridging.
Output Drive	±24 mA - Sustains full logic swing into 50 Ω transmission lines or 10–15 pF capacitive loads.
Input Voltage Range	–0.5 V to 5.5 V - Accepts 5V TTL inputs while powered from 3.3V, eliminating external translators.
Operating Temperature	–40°C to +85°C - Qualified for industrial-grade PCB environments without derating.
Quiescent Current	≤10 μA - Minimizes standby power in always-on system management interfaces.
Input Hysteresis	150 mV - Rejects noise on slow-rising control signals (xDIR/xOE) in electrically noisy chassis.

Pinout & Package

PI74LPT16245CAE is housed in a Pb-free, green 48-pin 173-mil wide plastic TSSOP (Package Code A), with 0.5 mm pitch, 7.6 mm × 12.5 mm body, and thermal pad omitted per JEDEC MO-153F/ED.

Pin/Terminal	Circuit Role	Design Meaning
1DIR, 2DIR	Direction Control Input	Determines data flow direction per 8-bit port (A→B or B→A); active-HIGH logic.
1OE, 2OE	Output Enable Input	Active-LOW enables 3-state output; HIGH forces both ports into high-impedance mode.
1A0–1A7, 2A0–2A7	Port A I/O Pins	Bidirectional data terminals for side A; 5V-tolerant inputs, 3.3V outputs.
1B0–1B7, 2B0–2B7	Port B I/O Pins	Bidirectional data terminals for side B; identical electrical behavior to Port A.
V_CC (Pins 7,18,31,42)	Power Supply	Four distributed V_CC pins reduce IR drop and supply noise during simultaneous switching.
GND (Pins 4,10,15,21,34,39,45)	Ground Reference	Seven GND pins provide low-inductance return paths and minimize ground bounce.

Key Features

Feature	Design Value
5V-tolerant I/O	Inputs accept 0–5.5 V regardless of V_CC; eliminates need for external level shifters in mixed-voltage backplanes.
Balanced ±24 mA drive	Equal sink/source capability ensures clean signal integrity across unterminated or lightly loaded buses.
Hysteresis on all inputs	150 mV threshold margin prevents chatter on noisy control lines like xDIR in motor-control subsystems.
Low ground bounce	Multiple GND pins and optimized output stage reduce ΔI/Δt-induced noise coupling into analog sections.
Pb-free & Green packaging	TSSOP-48 meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profile requirements.

Applications

Industrial PLC Backplane Interface

Embedded CPU Memory Expansion

Use Scenario: Bridging legacy 5V I/O modules to modern 3.3V ARM-based controller cards in programmable logic controllers.

IC Role / Device Role / Timing Role: Bidirectional voltage translator managing address/data strobes between mismatched voltage domains.

Use Value: Eliminates discrete resistor-divider networks while maintaining <4.1 ns propagation delay for deterministic cycle timing.

Use Scenario: Extending 3.3V SoC memory bus to external SRAM or Flash devices operating at 5V logic levels.

IC Role / Device Role / Timing Role: Asynchronous bus transceiver enabling read/write handshaking across voltage boundaries without clock domain crossing logic.

Use Value: ±24 mA drive sustains signal integrity over 10 cm PCB traces; hysteresis rejects EMI from adjacent motor drivers.

Automotive Body Control Module

Test Equipment Signal Conditioning

Use Scenario: Interfacing 3.3V microcontroller peripherals with 5V CAN transceivers and LIN bus drivers in body electronics ECUs.

IC Role / Device Role / Timing Role: Level-shifting transceiver for control/status lines shared between MCU and legacy automotive ICs.

Use Value: –40°C to +85°C rating ensures reliability under hood temperature cycling; 5.5 V max input withstands load-dump transients.

Use Scenario: Adapting FPGA I/O banks (3.3V) to legacy 5V test instrumentation interfaces (e.g., GPIB, parallel port).

IC Role / Device Role / Timing Role: Reconfigurable bidirectional buffer enabling FPGA firmware to emulate multiple legacy device protocols.

Use Value: Independent xDIR/xOE per 8-bit port allows dynamic reassignment of data direction during protocol arbitration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional voltage-level translation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16245ADGGR	3.3V-only I/O (no 5V tolerance); lower drive (±24 mA only at V_CC = 3.3V); 1.8V–3.6V supply range.	Requires external clamping for 5V inputs; unsuitable for direct 5V bus connection without protection diodes.	Select when interfacing only with 3.3V peripherals and cost is prioritized over mixed-voltage flexibility.
74ALVC16245PW	Higher speed (t_PD ≤3.2 ns); 1.65V–3.6V supply; no 5V-tolerant inputs; smaller TSSOP-48 footprint (6.1 mm × 12.5 mm).	Lacks 5V input tolerance; requires redesign of input conditioning if legacy 5V signals are present.	Choose for new designs targeting maximum speed and lowest power, with fully 3.3V signal chains.

Compared with SN74LVC16245ADGGR and 74ALVC16245PW, PI74LPT16245CAE uniquely supports direct 5V-tolerant input operation without external components, making it the only option among the three qualified for retrofitting into existing 5V-system interfaces without board revision.

Availability

PI74LPT16245CAE is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, automotive body control modules, embedded memory expansion, and test equipment signal conditioning requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for PI74LPT16245CAE 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 (acquired by Diodes Incorporated in 2016) specialized in high-speed interface, timing, and signal-integrity solutions for communications, computing, and industrial markets.

The PI74LPT16245 belongs to Pericom's LPT (Low Power Transceiver) family, engineered specifically for robust voltage translation in mixed 3.3V/5V systems with emphasis on noise immunity, thermal stability, and pin-compatible upgrade paths from legacy LCX/LVT logic.

FAQ

Can PI74LPT16245CAE operate with V_CC = 2.7V while maintaining full 5V input tolerance?

Yes. The device guarantees 5V-tolerant inputs (–0.5 V to 5.5 V) across its entire specified supply range (2.7V–3.6V). At V_CC = 2.7V, VIH remains ≥2.0 V and VIL ≤0.8 V per datasheet Section 3, ensuring reliable logic recognition of 5V TTL signals without degradation.

What is the maximum sustained data rate supported by PI74LPT16245CAE in 16-bit mode?

Based on t_PD ≤4.1 ns (max) and t_SK(o) ≤0.5 ns, the device supports clean 16-bit parallel transfers up to 120 MHz (cycle time ≥8.3 ns). Real-world throughput depends on bus loading and termination but exceeds PCIe Gen1 x1 signaling requirements for local interconnects.

Does PI74LPT16245CAE require external pull-up or pull-down resistors on xDIR/xOE pins?

No. Internal weak pull-downs are not present, but the inputs have hysteresis and CMOS-compatible thresholds. For deterministic startup behavior, external pull-downs (e.g., 10 kΩ to GND on xOE) are recommended to ensure high-impedance state until firmware asserts direction and enable control.

How does the PI74LPT16245CAE handle simultaneous switching of all 16 bits?

Its layout includes seven GND and four V_CC pins with distributed placement to minimize simultaneous switching noise (SSN). Measured ground bounce is <0.3 V under worst-case 16-bit toggling at 2.5 MHz, verified per datasheet Section 4 ICCD characterization and package parasitic modeling.

PI74LPT16245CAE 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:: Transceiver, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 8

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

PI74LPT16245CAE FAQ

1.How can I place an order for PI74LPT16245CAE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74LPT16245CAE 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 PI74LPT16245CAE reliable?

The price and inventory of PI74LPT16245CAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LPT16245CAE is usually 5 days.

3.What payment methods are accepted for PI74LPT16245CAE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LPT16245CAE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74LPT16245CAE?

PI74LPT16245CAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74LPT16245CAE 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 PI74LPT16245CAE?

For technical support, including PI74LPT16245CAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LPT16245CAE requirements.

6.How does Aetrix verify that PI74LPT16245CAE is sourced from the original manufacturer or authorized distributors?

All PI74LPT16245CAE 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 PI74LPT16245CAE meets industry standards.

7.What is the process for return or replacement of PI74LPT16245CAE?

All PI74LPT16245CAE units undergo pre-shipment inspection (PSI). If there is an issue with PI74LPT16245CAE, 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 PI74LPT16245CAE part is unused and in its original packaging.

Return procedure for PI74LPT16245CAE:

1.Submit a request within 90 days.

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

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