My Inquiry
My Account
Diodes Incorporated PI74LPT16245AAE
- Part No.:
- PI74LPT16245AAE
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74LPT16245AAE.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,455
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI74LPT16245AAE from Pericom Semiconductor is a 16-bit bidirectional voltage-level transceiver supporting asynchronous two-way data bus communication between 3.3V and 5.0V domains. It features dual 8-bit or unified 16-bit operation via independent DIR/OE controls, 24 mA balanced output drive, and industrial temperature range (–40°C to +85°C). Used in mixed-voltage motherboard I/O buffering and FPGA-to-ASIC interface translation.
For engineers reviewing the PI74LPT16245AAE datasheet, PI74LPT16245AAE pinout, PI74LPT16245AAE application, or PI74LPT16245AAE equivalent, key selection criteria include 3.3V/5V tolerance, high-impedance control timing (tPZL ≤ 5.8 ns), hysteresis-enabled noise immunity, and TSSOP-48 package compatibility with LCX/LVT logic families.
Technical Context
The PI74LPT16245AAE implements dual independent direction-control paths (1DIR/2DIR) and output-enable inputs (1OE/2OE), enabling flexible partitioning into two 8-bit transceivers or one 16-bit unit. Its 5V-tolerant I/O architecture allows direct connection to 5V buses while powered at 3.3V, with input hysteresis (150 mV) and low ground bounce design.
It operates across VCC = 2.7V–3.6V, delivers ±24 mA output drive, and achieves propagation delays as low as 1.5 ns (min) with 50 pF load. Switching characteristics are specified for both commercial and extended voltage ranges, with skew guaranteed ≤0.5 ns between same-direction outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 3.6V - Ensures stable operation in 3.3V systems with ±0.3V supply tolerance |
| I/O Voltage Tolerance | Inputs accept –0.5V to 7.0V; outputs drive to 5V bus - Enables safe interfacing with legacy 5V logic without level shifters |
| Output Drive | ±24 mA (sink/source) - Sufficient to drive 50 Ω transmission lines or multiple CMOS loads under heavy capacitive loading |
| Propagation Delay | tPLH/tPHL ≤ 4.1 ns (LPT16245C grade, CL = 50 pF) - Supports >200 MHz data rates in point-to-point bus applications |
| Enable/Disable Time | tPZL ≤ 5.8 ns (max), tPHZ ≤ 4.8 ns (max) - Allows rapid bus arbitration and dynamic direction switching in real-time protocols |
| Input Hysteresis | 150 mV - Rejects noise on slow-rising or noisy control signals (e.g., long PCB traces, unshielded cables) |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded control, telecom line cards, and automotive body electronics |
Pinout & Package
PI74LPT16245AAE is packaged in a Pb-free, green 48-pin thin shrink small-outline package (TSSOP), 240 mil wide (package code A), with 0.5 mm pitch and exposed thermal pad per JEDEC MO-153F/ED.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input (Active HIGH) | Determines data flow direction per 8-bit port: HIGH = A→B, LOW = B→A |
| 1OE, 2OE | Output Enable Input (Active LOW) | Drives corresponding A/B ports into high-impedance state when HIGH |
| 1A0–1A7, 2A0–2A7 | Side A I/O Pins | Bidirectional data terminals for Port A; 5V-tolerant inputs, 3.3V outputs |
| 1B0–1B7, 2B0–2B7 | Side B I/O Pins | Bidirectional data terminals for Port B; identical electrical behavior to Side A |
| VCC (Pins 7, 18, 31, 42) | Power Supply | Four distributed VCC pins reduce simultaneous switching noise and improve PSRR |
| 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 Mixed-Signal Operation | Enables direct connection to 5V buses while powered at 3.3V-eliminates external level translators in mixed-voltage designs |
| Balanced ±24 mA Output Drive | Supports driving terminated transmission lines or fan-out to ≥10 LVTTL loads without signal degradation |
| Hysteresis on All Inputs | 150 mV threshold margin rejects EMI-induced glitches on DIR/OE control lines routed near noisy power planes |
| Low Ground Bounce Outputs | Optimized output stage layout and distributed GND pins suppress ΔI/Δt noise during simultaneous switching of all 16 bits |
| Pb-Free & Green Packaging | TSSOP-48 (A) meets RoHS 2011/65/EU and JEDEC J-STD-020D reflow profile requirements |
Applications
| Industrial PLC Backplane Interface | FPGA-to-Microcontroller Bus Translation |
|---|---|
|
Use Scenario: Interfacing a 3.3V FPGA I/O bank to legacy 5V industrial I/O modules over a 16-bit parallel backplane. IC Role / Device Role / Timing Role: Bidirectional voltage translator with independent DIR/OE control per 8-bit segment, enabling time-multiplexed read/write cycles. Use Value: Eliminates discrete resistor-divider or active translator ICs, reducing BOM count and PCB area while maintaining <5 ns propagation delay. |
Use Scenario: Connecting a 3.3V ARM Cortex-M7 microcontroller's external memory bus to a 5V SRAM or flash device. IC Role / Device Role / Timing Role: Asynchronous bus transceiver with fast enable/disable (≤5.8 ns) to meet SRAM access timing windows during burst reads. Use Value: Provides deterministic high-Z isolation during bus turnaround, preventing contention and ensuring clean address/data hold times. |
| Telecom Line Card Data Buffering | Automotive Body Control Module Communication Hub |
|
Use Scenario: Isolating and translating between 3.3V DSP core logic and 5V analog front-end ASICs on a high-density telecom line card. IC Role / Device Role / Timing Role: Dual 8-bit transceiver mode allows independent control of control/status vs. data lanes, minimizing latency skew. Use Value: Distributed VCC/GND pins and low ground bounce ensure signal integrity across 16-bit parallel paths operating at >100 MHz. |
Use Scenario: Aggregating sensor data from multiple 5V analog sensors and relaying it to a 3.3V CAN controller MCU in an automotive BCM. IC Role / Device Role / Timing Role: Level-shifting transceiver with industrial temperature rating (–40°C to +85°C) and hysteresis-enhanced noise immunity. Use Value: Withstands automotive EMI environments and thermal cycling without requiring external filtering or protection components. |
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 on inputs - requires external clamping or series resistors for 5V bus connection | Limited to 3.3V-only systems; unsuitable for direct 5V bus interfacing without redesign | Select when full 5V tolerance is unnecessary and cost is primary; verify input protection for mixed-voltage use |
| 74ALVC16245 | Higher speed (tPD ≤ 3.3 ns), but only 3.6V max VCC and no 5V-tolerant inputs - incompatible with 5V bus termination | Used in high-speed 3.3V-only backplanes; cannot replace PI74LPT16245AAE in 5V-tolerant roles | Choose for maximum speed in purely 3.3V domains; avoid where 5V bus presence is certain |
Compared with SN74LVC16245A and 74ALVC16245, PI74LPT16245AAE uniquely supports true 5V-tolerant operation without external components, making it the only drop-in solution for mixed 3.3V/5V bus arbitration where input voltage exceeds VCC.
Availability
PI74LPT16245AAE is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, FPGA-to-microcontroller bus translation, and telecom line card data buffering requiring stable component supply and long-term lifecycle support.
Supply support for PI74LPT16245AAE 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 and signal-integrity solutions for computing, communications, and industrial electronics before its 2016 acquisition.
The PI74LPT16245 belongs to Pericom's LPT (Low-Power Transceiver) logic family, engineered specifically for robust voltage-level translation in mixed-supply systems with stringent noise and timing requirements.
FAQ
What is the maximum bus capacitance supported by PI74LPT16245AAE at 100 MHz?
The device specifies switching performance with CL = 50 pF, and its ±24 mA drive capability supports up to ~70 pF total load (including trace and stub capacitance) while maintaining <5 ns propagation delay and monotonic edges. For 100 MHz operation, keep net capacitance ≤45 pF and use controlled-impedance routing with series termination.
Can PI74LPT16245AAE be used with VCC = 2.5V?
No. The absolute minimum VCC is 2.7V per the Absolute Maximum Ratings table. At 2.5V, VIH/VIL thresholds and output drive strength fall outside specification, risking logic misreads and insufficient noise margin. Use only within 2.7V–3.6V range.
Is the PI74LPT16245AAE pinout compatible with standard 48-pin TSSOP footprints?
Yes. It uses JEDEC MO-153F/ED compliant 48-pin TSSOP with 0.5 mm pitch and 240 mil body width. Footprint matches industry-standard 48-TSSOP layouts, including land pattern dimensions, thermal pad exposure, and solder mask clearance per IPC-7351B.
Does PI74LPT16245AAE require external pull-up or pull-down resistors on DIR/OE pins?
No. Internal weak pull-downs are not present, but the inputs have hysteresis and TTL-compatible thresholds. For robust noise immunity in electrically noisy environments, a 10 kΩ pull-down on each DIR/OE is recommended to prevent floating states during power-up or reset sequences.
PI74LPT16245AAE 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
PI74LPT16245AAE FAQ
1.How can I place an order for PI74LPT16245AAE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74LPT16245AAE 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 PI74LPT16245AAE reliable?
The price and inventory of PI74LPT16245AAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LPT16245AAE is usually 5 days.
3.What payment methods are accepted for PI74LPT16245AAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LPT16245AAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74LPT16245AAE?
PI74LPT16245AAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74LPT16245AAE 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 PI74LPT16245AAE?
For technical support, including PI74LPT16245AAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LPT16245AAE requirements.
6.How does Aetrix verify that PI74LPT16245AAE is sourced from the original manufacturer or authorized distributors?
All PI74LPT16245AAE 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 PI74LPT16245AAE meets industry standards.
7.What is the process for return or replacement of PI74LPT16245AAE?
All PI74LPT16245AAE units undergo pre-shipment inspection (PSI). If there is an issue with PI74LPT16245AAE, 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 PI74LPT16245AAE part is unused and in its original packaging.
Return procedure for PI74LPT16245AAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI74LPT16245AAE Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
