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Diodes Incorporated PI74ALVTC16245AE
- Part No.:
- PI74ALVTC16245AE
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74ALVTC16245AE.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,975
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Product details
Overview
PI74ALVTC16245AE from Pericom Semiconductor is a 16-bit bidirectional transceiver with 3-state outputs, designed for asynchronous two-way communication between data buses in mixed-voltage systems. It operates from 1.8V to 3.6V, supports I/O tolerance up to 3.6V, features Bus Hold to prevent floating inputs, and delivers ±64mA drive strength at 3.3V. Used in industrial bus interface modules requiring live insertion and power-off high-impedance behavior.
For engineers reviewing the PI74ALVTC16245AE datasheet, PI74ALVTC16245AE pinout, PI74ALVTC16245AE application, or PI74ALVTC16245AE equivalent, key selection criteria include direction control (xDIR) logic, output enable (OE) active-HI behavior, 48-pin TSSOP package compatibility, and verified 1.8V–3.6V VDD operation with bus-hold retention.
Technical Context
This device implements dual 8-bit or unified 16-bit bidirectional data transfer via independent DIR/OE controls per port pair. Its patented noise reduction circuitry suppresses simultaneous switching noise, while power-off high-impedance ensures safe bus isolation during power sequencing.
The transceiver supports live insertion through robust input clamping (±50mA diode current rating), 3.6V-tolerant I/Os enabling interoperation with legacy 3.3V/2.5V subsystems, and Bus Hold functionality eliminating external pull resistors on data lines - critical for stable operation in industrial backplane interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 1.8V to 3.6V - enables direct integration into low-voltage FPGA/CPU I/O domains without level shifters |
| I/O Voltage Tolerance | Up to 3.6V - allows connection to higher-voltage buses while powered from 1.8V supply |
| Drive Strength | –32mA / +64mA @ 3.3V - sufficient for driving 50Ω transmission lines or fan-out to 10+ CMOS loads |
| Propagation Delay | Max 8.2ns @ VDD=3.3V - supports >100MHz data rates in synchronous bus applications |
| Bus Hold Current | ±5.7µA @ VI=0.2V - actively retains last valid logic state when input floats, removing need for external biasing |
| Operating Temperature | –40°C to +85°C - qualified for industrial ambient environments without derating |
| ESD Rating | ±2kV HBM - protects against handling-induced discharge during board assembly |
Pinout & Package
PI74ALVTC16245AE is housed in a Pb-free, green-compliant 48-pin 240-mil wide plastic TSSOP (Package Code A), with 0.5mm pitch and 7.6mm × 12.5mm footprint. Pin 1 is marked by a dot; pins are numbered counter-clockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output Enable (Active HIGH) | Disables both A/B ports simultaneously into high-impedance; tie to VDD via pullup for power-up safety |
| 1DIR, 2DIR | Direction Control | Controls data flow: LOW = A→B, HIGH = B→A; enables dual 8-bit or single 16-bit configuration |
| 1A0–1A7, 2A0–2A7 | Port A Data Inputs/Outputs | First 8-bit bidirectional bus segment; internally buffered with Bus Hold |
| 1B0–1B7, 2B0–2B7 | Port B Data Inputs/Outputs | Second 8-bit bidirectional bus segment; electrically isolated from Port A except via transceiver path |
| VCC (Pins 7, 16, 25, 34, 43) | Power Supply | Single 1.8V–3.6V rail powers all logic and I/O; multiple pins reduce IR drop and improve noise immunity |
| GND (Pins 4, 13, 22, 31, 40) | Ground Reference | Dedicated ground pins per functional block minimize ground bounce across 16-bit data paths |
Key Features
| Feature | Design Value |
|---|---|
| Live Insertion Support | Input clamps and power-off Hi-Z allow hot-plug operation in modular backplanes without system reset |
| I/O Tolerance | 3.6V-tolerant inputs/outputs permit interoperability with 3.3V peripherals while operating at 1.8V core voltage |
| Bus Hold | Retains last valid logic state on un-driven inputs, eliminating external pull resistors and reducing BOM count |
| Noise Reduction Circuitry | Patented design limits simultaneous switching output (SSO) noise, easing PCB layout in high-speed routing |
| High Drive Capability | –32mA sink / +64mA source at 3.3V enables direct driving of unterminated stubs or capacitive loads up to 30pF |
Applications
| Industrial PLC Backplane Interface | Embedded CPU-to-Peripheral Bridge |
|---|---|
Use Scenario: Connecting a 1.8V FPGA I/O bank to a 3.3V sensor hub across a 20cm backplane trace. IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver managing data flow direction under FPGA control, with OE synchronized to bus arbitration signals. Use Value: Eliminates discrete level shifters and pull resistors; Bus Hold prevents glitches during sensor hot-swap events. | Use Scenario: Interfacing an ARM Cortex-M7 microcontroller's GPIO port to a legacy 8-bit parallel EEPROM in a medical diagnostic module. IC Role / Device Role / Timing Role: Configured as dual 8-bit transceivers to isolate read/write cycles, with DIR toggled per access phase and OE gated by chip-select timing. Use Value: Enables reliable 10MHz burst reads without signal integrity degradation due to matched propagation delay (≤8.2ns). |
| Automotive Infotainment Expansion Slot | Test Equipment Modular I/O Adapter |
Use Scenario: Adding USB-to-parallel bridge capability to a head unit via removable daughterboard with shared data bus. IC Role / Device Role / Timing Role: Provides hot-pluggable bus isolation using OE-controlled Hi-Z during insertion; DIR selects host/device data direction. Use Value: Meets automotive live-insertion requirements with ±2kV HBM ESD protection and –40°C startup reliability. | Use Scenario: Adapting a benchtop logic analyzer's 3.3V probe interface to legacy 5V TTL test fixtures. IC Role / Device Role / Timing Role: Operated at 3.3V VDD while tolerating 5V inputs, translating signals without external clamping diodes. Use Value: 3.6V I/O tolerance avoids signal clipping on 5V logic edges, preserving rise/fall time integrity for accurate timing capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16245A | TI part lacks Bus Hold and I/O tolerance beyond VDD+0.3V; requires external pull resistors | Suitable only in homogeneous 3.3V systems; not viable for mixed-voltage or floating-input scenarios | Select only if cost sensitivity outweighs design simplification benefits of Bus Hold and 3.6V tolerance |
| 74LVC16245APAG | IDT part offers Bus Hold but limited to 3.6V max VDD; no 1.8V operation support | Cannot replace PI74ALVTC16245AE in 1.8V-core designs; requires 2.5V/3.3V minimum supply | Choose only when existing 3.3V-only infrastructure precludes lower-voltage operation |
Compared with SN74ALVCH16245A and 74LVC16245APAG, PI74ALVTC16245AE uniquely combines 1.8V operation, 3.6V I/O tolerance, and Bus Hold - reducing component count and improving robustness in mixed-voltage industrial interfaces where signal integrity and hot-swap reliability are critical.
Availability
PI74ALVTC16245AE is available at Aetrix Electronics and suitable for industrial PLC backplanes, embedded CPU-peripheral bridges, automotive infotainment expansion slots, and test equipment modular I/O adapters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PI74ALVTC16245AE 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 ICs, clock management, and signal-integrity solutions for communications and computing markets.
The PI74ALVTC family targets low-voltage, mixed-supply bus interfacing - specifically engineered to simplify design of robust, space-constrained industrial and automotive data paths with minimal external components.
FAQ
What is the recommended pullup resistor value for OE during power-up?
OE must be tied to VDD via a pullup resistor to ensure high-impedance state at power-on. Minimum resistance is determined by the driver's current-sinking capability: for typical 1.8V–3.6V operation, a 10kΩ resistor provides sufficient margin while limiting quiescent current to <0.36mA. Values below 4.7kΩ risk excessive current if OE is actively driven low.
Does PI74ALVTC16245AE support true 5V-tolerant inputs?
No. The device supports I/O tolerance up to 3.6V absolute maximum, not 5V. Inputs exceeding VDD + 0.5V (e.g., 5V signals with VDD = 3.3V) violate absolute maximum ratings and may cause permanent damage. For 5V interfacing, external clamping or level-shifting is required.
How does Bus Hold function interact with OE and DIR controls?
Bus Hold remains active on all data pins (A and B ports) regardless of OE or DIR state - it retains the last valid logic level even when outputs are disabled (OE HIGH) or direction is undefined. This prevents floating states during bus arbitration pauses or partial reconfiguration, independent of transceiver enablement.
Can PI74ALVTC16245AE be used in a 16-bit unidirectional configuration?
Yes. By fixing DIR to a constant logic level (e.g., HIGH for B→A flow) and controlling data direction via software or external logic, the device functions as a 16-bit unidirectional buffer. OE still governs 3-state control, allowing dynamic bus release. No hardware modification is needed - only control signal assignment differs from bidirectional use.
PI74ALVTC16245AE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74ALVTC
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 1.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
PI74ALVTC16245AE FAQ
1.How can I place an order for PI74ALVTC16245AE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74ALVTC16245AE 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 PI74ALVTC16245AE reliable?
The price and inventory of PI74ALVTC16245AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74ALVTC16245AE is usually 5 days.
3.What payment methods are accepted for PI74ALVTC16245AE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74ALVTC16245AE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74ALVTC16245AE?
PI74ALVTC16245AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74ALVTC16245AE 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 PI74ALVTC16245AE?
For technical support, including PI74ALVTC16245AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74ALVTC16245AE requirements.
6.How does Aetrix verify that PI74ALVTC16245AE is sourced from the original manufacturer or authorized distributors?
All PI74ALVTC16245AE 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 PI74ALVTC16245AE meets industry standards.
7.What is the process for return or replacement of PI74ALVTC16245AE?
All PI74ALVTC16245AE units undergo pre-shipment inspection (PSI). If there is an issue with PI74ALVTC16245AE, 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 PI74ALVTC16245AE part is unused and in its original packaging.
Return procedure for PI74ALVTC16245AE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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