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Diodes Incorporated PI74LPT16245AE
- Part No.:
- PI74LPT16245AE
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74LPT16245AE.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,788
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Product details
Overview
PI74LPT16245AE from Pericom Semiconductor is a 3.3V 16-bit bidirectional voltage-level transceiver with 24 mA sink/source drive, 5V-tolerant I/O, and industrial temperature range (–40°C to +85°C), used for asynchronous bus bridging between 3.3V and 5V domains in mixed-voltage systems.
For engineers reviewing the PI74LPT16245AE datasheet, PI74LPT16245AE pinout, PI74LPT16245AE application, or PI74LPT16245AE equivalent, key selection criteria include bidirectional direction control (xDIR), 3-state output enable (xOE), 5V-tolerant input compatibility, low ground bounce, and TSSOP-48 packaging for high-density PCB layouts.
Technical Context
The PI74LPT16245AE implements dual 8-bit or unified 16-bit bidirectional data flow via independent xDIR and xOE controls per port pair, enabling flexible bus arbitration in multi-master systems. Its CMOS architecture supports mixed-signal operation with guaranteed logic thresholds at both 3.3V and 5V inputs.
It features hysteresis on all inputs (150 mV), distributed VCC/GND pins to suppress switching noise, and low-output skew (≤0.5 ns) across same-direction transitions-critical for timing-critical parallel bus interfaces like PCI-X legacy bridges and industrial backplanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7V–3.6V nominal; enables stable operation in 3.3V systems with ±10% rail tolerance |
| IO Drive Strength | ±24 mA; sufficient to drive 50 Ω transmission lines or multiple LVT/LCX loads without external buffers |
| Propagation Delay | 1.5–4.1 ns (LPT16245C grade); ensures sub-5 ns timing margin for 100 MHz bus cycles |
| Input Voltage Range | –0.5V to +7.0V; allows direct connection to 5V buses without level-shifting circuitry |
| Operating Temperature | –40°C to +85°C; validated for industrial control and telecom infrastructure environments |
| Output Skew | ≤0.5 ns; guarantees simultaneous edge alignment across all 16 bits for synchronous capture |
| Quiescent Current | 0.1–10 μA; minimizes standby power in battery-backed or always-on subsystems |
Pinout & Package
Package: 48-pin 240-mil wide thin shrink small-outline package (TSSOP), Pb-free & Green compliant, with 0.5 mm pitch and exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Determines data flow direction per 8-bit port group (A→B or B→A); active-HIGH logic |
| 1OE, 2OE | Output Enable Input | Active-LOW 3-state control; disables both A/B ports simultaneously into high-impedance state |
| 1A0–1A7, 2A0–2A7 | Port A I/O Pins | Side-A bidirectional data terminals; 5V-tolerant inputs, 3.3V outputs |
| 1B0–1B7, 2B0–2B7 | Port B I/O Pins | Side-B bidirectional data terminals; identical electrical behavior to Port A |
| VCC (Pins 7,18,31,42) | Power Supply | Four distributed VCC pins reduce IR drop and improve noise immunity during fast 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 | Accepts 0–5.5 V inputs while powered from 3.3 V supply-eliminates need for external translators in mixed-voltage backplanes |
| Low ground bounce | Distributed GND pins and balanced drive reduce simultaneous switching noise below 100 mV peak, preserving signal integrity |
| Hysteresis on all inputs | 150 mV input hysteresis rejects noise on slow-rising or noisy control signals (e.g., long traces in industrial enclosures) |
| Pb-free & Green packaging | TSSOP-48 (code A) meets RoHS/REACH requirements and supports lead-free reflow profiles (J-STD-020) |
| Industrial temperature range | Validated operation from –40°C to +85°C ambient-suitable for uncooled industrial PLCs and outdoor base stations |
Applications
| PCI-X Bus Bridge Interface | Industrial Backplane Data Translation |
|---|---|
Use Scenario: Bridging legacy 5V PCI-X control logic to modern 3.3V FPGA-based interface controllers in server add-in cards. IC Role / Device Role / Timing Role: Bidirectional level translator managing address/data strobes with sub-5 ns propagation delay and matched skew. Use Value: Enables drop-in replacement of obsolete 5V-only transceivers without redesigning timing margins or adding discrete level shifters. | Use Scenario: Interfacing 5V sensor acquisition modules to 3.3V ARM Cortex-M7 real-time controllers in factory automation racks. IC Role / Device Role / Timing Role: Asynchronous bus transceiver handling parallel 16-bit analog-to-digital result transfers with configurable direction per channel group. Use Value: Reduces BOM count by consolidating two 8-bit translators into one device with shared OE/DIR controls and common power domain. |
| Telecom Line Card Voltage Translation | Test Equipment Digital I/O Expansion |
Use Scenario: Level-shifting between 5V CPLD-based configuration logic and 3.3V SERDES PHYs on telecom line cards operating in NEBS-compliant chassis. IC Role / Device Role / Timing Role: High-reliability bidirectional transceiver with 7.2 ns max disable time ensuring clean bus release before next access cycle. Use Value: Meets telecom timing requirements for hot-swap-safe I/O isolation and eliminates risk of bus contention during firmware updates. | Use Scenario: Expanding digital I/O capability of automated test equipment (ATE) mainframes using 3.3V controller boards interfacing to legacy 5V DUTs. IC Role / Device Role / Timing Role: Configurable 16-bit transceiver supporting both static and burst-mode data transfers with programmable direction control. Use Value: Supports deterministic timing for pattern generation and capture at up to 100 MHz due to guaranteed 4.1 ns max propagation delay (LPT16245C grade). |
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 |
|---|---|---|---|
| SN74LVC16245A | 3.3V-only I/O; not 5V-tolerant-requires external clamping or series resistors for 5V bus connection | Limited to 3.3V-only systems; unsuitable for direct 5V bus interfacing without added components | Select when system operates exclusively at 3.3V and cost sensitivity outweighs flexibility needs |
| 74ALVC16245 | Higher drive (±24 mA), but narrower VCC range (2.3–3.6 V); no 5V-tolerant input spec | Not qualified for mixed 3.3/5V operation; requires separate level-shifting for 5V peripherals | Prefer only if existing design uses ALVC family and board layout prohibits adding discrete translators |
Compared with SN74LVC16245A and 74ALVC16245, the PI74LPT16245AE uniquely delivers native 5V-tolerant inputs with 3.3V supply, eliminating external protection components and simplifying layout in mixed-voltage systems-especially where space and BOM count are constrained.
Availability
PI74LPT16245AE is available at Aetrix Electronics and suitable for PCI-X bridge interfaces, industrial backplane data translation, telecom line card voltage translation, and test equipment digital I/O expansion requiring stable component supply across extended product lifecycles.
Supply support for PI74LPT16245AE 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 (now part of Diodes Incorporated) specialized in high-speed interface, timing, and signal-integrity solutions for communications, computing, and industrial markets before its 2016 acquisition.
The PI74LPT16245AE belongs to Pericom's LPT (Low-Power Transceiver) family, engineered specifically for robust bidirectional level translation in mixed-voltage parallel bus architectures with emphasis on noise immunity and timing predictability.
FAQ
Can PI74LPT16245AE operate with a 2.5V supply?
No. The device is specified for VCC = 2.7V to 3.6V only. At 2.5V, input thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V) and output drive (VOH ≥ 2.4V at IOH = –24 mA) fall outside guaranteed limits, risking logic misreads and insufficient noise margin. Operation below 2.7V is not characterized or supported.
What is the maximum data rate supported by PI74LPT16245AE?
The device supports reliable operation up to 100 MHz bus clock rates. With 4.1 ns max propagation delay (LPT16245C grade) and ≤0.5 ns output skew, it maintains setup/hold timing for 10 ns period signals. For sustained 100 MHz toggling, dynamic supply current remains within 3.3 mA (16-bit toggle at 2.5 MHz), confirming thermal stability under full load.
Is PI74LPT16245AE pin-compatible with standard 48-pin TSSOP transceivers?
Yes. It follows industry-standard double-density pinout (JEDEC MO-153F/ED), matching footprint and signal assignment of compatible 16-bit transceivers including 74LVC16245 and 74ALVC16245. Pin-for-pin compatibility enables direct substitution in existing layouts without PCB revision.
Does PI74LPT16245AE require external pull-up or pull-down resistors on DIR/OE pins?
No. Internal weak pull-downs are not present; however, OE and DIR inputs have CMOS-compatible thresholds and negligible leakage (±1 μA). To prevent floating states during power-up or reset, external pull-downs (e.g., 10 kΩ to GND on OE) are recommended for deterministic 3-state initialization, especially in systems lacking controlled power sequencing.
PI74LPT16245AE 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
PI74LPT16245AE FAQ
1.How can I place an order for PI74LPT16245AE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74LPT16245AE 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 PI74LPT16245AE reliable?
The price and inventory of PI74LPT16245AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LPT16245AE is usually 5 days.
3.What payment methods are accepted for PI74LPT16245AE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LPT16245AE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74LPT16245AE?
PI74LPT16245AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74LPT16245AE 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 PI74LPT16245AE?
For technical support, including PI74LPT16245AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LPT16245AE requirements.
6.How does Aetrix verify that PI74LPT16245AE is sourced from the original manufacturer or authorized distributors?
All PI74LPT16245AE 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 PI74LPT16245AE meets industry standards.
7.What is the process for return or replacement of PI74LPT16245AE?
All PI74LPT16245AE units undergo pre-shipment inspection (PSI). If there is an issue with PI74LPT16245AE, 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 PI74LPT16245AE part is unused and in its original packaging.
Return procedure for PI74LPT16245AE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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