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Diodes Incorporated PI74LPT16245AA
- Part No.:
- PI74LPT16245AA
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74LPT16245AA.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,528
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Product details
Overview
PI74LPT16245AA from Pericom Semiconductor is a 3.3V 16-bit bidirectional voltage-level transceiver with 5V-tolerant inputs/outputs, 24 mA balanced drive strength, -40°C to +85°C industrial temperature range, and 48-pin TSSOP (A) package. It enables asynchronous two-way data transfer between mixed-voltage buses (3.3V ↔ 5V), serving as a bus interface in embedded control backplanes and FPGA I/O expansion.
For engineers reviewing the PI74LPT16245AA datasheet, PI74LPT16245AA pinout, PI74LPT16245AA application, or PI74LPT16245AA equivalent, key selection criteria include bidirectional direction control (xDIR), 3-state output enable (xOE), 5V-tolerant I/O capability, propagation delay ≤4.6 ns (LPT16245A grade), and compatibility with LCX™/LVT™ logic families.
Technical Context
The PI74LPT16245AA implements dual 8-bit or unified 16-bit bidirectional data flow via independent xDIR and xOE controls per port pair. Its input hysteresis (150 mV) and low ground bounce outputs ensure noise immunity in high-speed digital systems.
It operates across VCC = 2.7–3.6 V while accepting input voltages up to 7.0 V, enabling safe interfacing with legacy 5V logic without level-shifting circuitry. Output drive is symmetric at ±24 mA, supporting direct connection to terminated or unterminated 5V buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - Enables operation in standard 3.3V supply rails with ±10% tolerance. |
| Input Voltage Tolerance | –0.5 V to +7.0 V - Allows direct connection to 5V logic without external clamping or translation. |
| Output Drive Strength | ±24 mA - Sufficient to drive 50 Ω transmission lines or multiple LVTTL loads simultaneously. |
| Propagation Delay | ≤4.6 ns (max, LPT16245A grade, CL = 50 pF) - Supports >100 MHz bus toggle rates in synchronous systems. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded control and communications equipment. |
| Input Hysteresis | 150 mV - Reduces susceptibility to noise-induced false triggering on slow-rising or noisy control signals. |
| Quiescent Current | ≤10 μA - Minimizes standby power in always-on system management interfaces. |
Pinout & Package
Package: 48-pin 240-mil wide thin plastic TSSOP (Package Code A), Pb-free & Green compliant, JEDEC MO-153F/ED footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Active-HIGH signal selecting data flow direction: HIGH = A→B, LOW = B→A. |
| 1OE, 2OE | Output Enable Input | Active-LOW control placing corresponding A/B port outputs in high-impedance state. |
| 1A0–1A7, 2A0–2A7 | Side A I/O Pins | Bidirectional data terminals for Bus A; 5V-tolerant inputs, 3.3V outputs capable of driving 5V bus. |
| 1B0–1B7, 2B0–2B7 | Side B I/O Pins | Bidirectional data terminals for Bus B; functionally identical to Side A pins. |
| VCC (Pins 7, 18, 31, 42) | Power Supply | Four distributed VCC pins reduce switching noise and improve power integrity across high-speed operation. |
| GND (Pins 4, 10, 15, 21, 34, 39, 45) | Ground Reference | Seven GND pins provide low-inductance return paths and minimize ground bounce during simultaneous switching. |
Key Features
| Feature | Design Value |
|---|---|
| 5V-Tolerant Mixed-Signal Operation | Enables seamless interconnection between 3.3V FPGAs and legacy 5V peripherals without external level shifters. |
| Balanced ±24 mA Output Drive | Supports robust signal integrity on unterminated or lightly loaded PCB traces up to 15 cm in length. |
| Dual 8-bit / Single 16-bit Configurability | Allows flexible partitioning-e.g., separate address/data lanes or full-width data path-via independent DIR/OE controls. |
| Low Ground Bounce Outputs | Reduces simultaneous switching noise (SSN), critical for maintaining signal integrity in dense logic backplanes. |
| Hysteresis on All Inputs | Improves noise margin on direction and enable control lines subject to crosstalk or long trace routing. |
Applications
| Industrial PLC Backplane Interface | FPGA I/O Expansion Bridge |
|---|---|
Use Scenario: Connecting 3.3V FPGA I/O banks to legacy 5V sensor modules and actuator drivers on a modular control chassis. IC Role / Device Role / Timing Role: Bidirectional voltage translator and bus driver, managing data flow direction under FPGA-configured control signals. Use Value: Eliminates need for discrete level-shifter ICs and reduces BOM count while maintaining timing compliance (<4.6 ns delay). | Use Scenario: Extending the I/O capability of a Xilinx Artix-7 FPGA to support additional parallel ADC/DAC interfaces operating at 5V logic levels. IC Role / Device Role / Timing Role: Synchronous data conduit with configurable directionality, synchronized to FPGA clock domain via registered OE/DIR control. Use Value: Provides deterministic 16-bit throughput with sub-5 ns propagation, preserving setup/hold timing margins for 100+ MHz sampling clocks. |
| Automotive Body Control Module | Test Equipment Digital I/O Adapter |
Use Scenario: Interfacing a 3.3V microcontroller unit (MCU) to 5V CAN transceiver and LIN physical layer ICs within a body control module. IC Role / Device Role / Timing Role: Asynchronous bus translator handling command/response traffic between MCU and peripheral ICs. Use Value: Industrial temperature rating (–40°C to +85°C) and 7.0 V absolute max input rating ensure reliability in under-hood thermal environments. | Use Scenario: Adapting automated test equipment (ATE) digital pattern generators (3.3V) to legacy 5V DUTs requiring parallel stimulus/response verification. IC Role / Device Role / Timing Role: Reconfigurable bidirectional data buffer enabling both stimulus injection and response capture on same pins. Use Value: Pin-compatible replacement for obsolete 74LVC16245, with improved drive strength and lower quiescent current (≤10 μA). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive (±24 mA same), but only 3.6 V max VCC; no 5V-tolerant inputs - requires external clamping for 5V bus use. | Restricted to 3.3V-only systems or those with added protection circuitry; not drop-in for mixed-voltage designs. | Select when cost sensitivity outweighs voltage flexibility and board space permits clamping diodes. |
| 74ALVC16245PW | Higher speed (tPD ≤ 3.4 ns), but narrower VCC range (2.3–3.6 V); 5V-tolerant inputs only - outputs not rated for 5V bus termination. | Suitable for high-speed 3.3V-only interconnects; cannot directly drive 5V buses without series resistors or buffers. | Prefer for timing-critical 3.3V FPGA-to-FPGA links where propagation delay dominates over voltage translation. |
Compared with SN74LVC16245ADGGR and 74ALVC16245PW, the PI74LPT16245AA uniquely supports true 5V-bus driving capability from a 3.3V supply without external components, making it optimal for mixed-voltage backplane and legacy interface applications.
Availability
PI74LPT16245AA is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion bridges, automotive body control modules, and ATE digital I/O adapters requiring stable component supply across extended temperature ranges and mixed-voltage interoperability.
Supply support for PI74LPT16245AA 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-performance interface, timing, and signal-integrity solutions for computing, communications, and industrial markets.
The PI74LPT16245AA belongs to Pericom's LPT (Low Power Transceiver) family, engineered specifically for low-noise, mixed-voltage bidirectional data transfer in space-constrained industrial and telecom infrastructure equipment.
FAQ
Can PI74LPT16245AA drive a 5V bus directly without external components?
Yes. Its outputs are specified to safely drive 5V-tolerant buses when VCC = 3.3V, and its inputs accept up to 7.0 V. The device includes internal clamp diodes and is characterized for 5V-bus operation per datasheet Section 3 (DC Electrical Characteristics) and Absolute Maximum Ratings.
What is the difference between PI74LPT16245AA and PI74LPT16245AE?
Both share identical electrical and functional specifications. The suffix "E" denotes Pb-free & Green compliance; "AA" and "AE" differ only in tape-and-reel packaging configuration - "AA" is standard tube packaging, while "AE" indicates tape-and-reel (per Ordering Information table, PS2068F Rev. 11/10/08).
Does PI74LPT16245AA support hot insertion?
No. The device lacks powered-off protection circuitry (IOFF specification shows ±100 µA leakage at VCC = 0V, insufficient for true hot-swap isolation). It must be powered before signal connections are established to avoid latch-up or damage.
How many independent transceiver sections does PI74LPT16245AA contain?
It contains two independent 8-bit bidirectional transceivers (Port 1: A0–A7/B0–B7; Port 2: A0–A7/B0–B7), each with dedicated DIR and OE controls, allowing concurrent or asymmetric data flow configurations per section.
PI74LPT16245AA 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
PI74LPT16245AA FAQ
1.How can I place an order for PI74LPT16245AA through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74LPT16245AA 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 PI74LPT16245AA reliable?
The price and inventory of PI74LPT16245AA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LPT16245AA is usually 5 days.
3.What payment methods are accepted for PI74LPT16245AA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LPT16245AA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74LPT16245AA?
PI74LPT16245AA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74LPT16245AA 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 PI74LPT16245AA?
For technical support, including PI74LPT16245AA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LPT16245AA requirements.
6.How does Aetrix verify that PI74LPT16245AA is sourced from the original manufacturer or authorized distributors?
All PI74LPT16245AA 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 PI74LPT16245AA meets industry standards.
7.What is the process for return or replacement of PI74LPT16245AA?
All PI74LPT16245AA units undergo pre-shipment inspection (PSI). If there is an issue with PI74LPT16245AA, 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 PI74LPT16245AA part is unused and in its original packaging.
Return procedure for PI74LPT16245AA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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