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

Diodes Incorporated PI74ALVCHR162245AE

Name: PI74ALVCHR162245AE
Brand: Diodes Incorporated
SKU: PI74ALVCHR162245AE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74ALVCHR162245AE

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: PI74ALVCHR162245AE.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:4,100

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Product details

Overview

PI74ALVCHR162245AE from Pericom Semiconductor is a 3.3V 16-bit bidirectional transceiver with 3-state outputs, designed for asynchronous two-way data bus communication. It features dual 8-bit or unified 16-bit operation via independent DIR/OE controls, bus-hold circuitry to eliminate external pull-ups, and operates across –40°C to +85°C industrial temperature range.

For engineers reviewing the PI74ALVCHR162245AE datasheet, PI74ALVCHR162245AE pinout, PI74ALVCHR162245AE application, or PI74ALVCHR162245AE equivalent, key selection criteria include V_CC = 2.3–3.6V compliance, 26Ω integrated series output resistors, high-impedance control timing (t_PD ≤ 9.4 ns @ V_CC = 3.3V), bus-hold retention, and TSSOP-48 packaging for high-density PCB layouts.

Technical Context

This device implements two independent 8-bit bidirectional transceiver blocks in a single 48-pin TSSOP package. Each block has dedicated direction (DIR) and output enable (OE) inputs, allowing flexible configuration as either two 8-bit or one 16-bit path without external logic.

All inputs include hysteresis for noise immunity; outputs feature built-in 26Ω series termination to suppress overshoot/undershoot. Bus-hold circuitry actively maintains last valid logic state on floating inputs, eliminating need for external biasing resistors during 3-state transitions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3V to 3.6V - Enables interoperability with 3.3V LVTTL and low-voltage CMOS systems while tolerating supply variation.
Propagation Delay t_PD	≤9.4 ns max @ V_CC = 3.3V - Supports high-speed bus handshaking up to ~100 MHz system clock domains.
Output Drive Strength	I_OH/I_OL = ±8 mA min - Sufficient to drive 50 Ω transmission lines or fan-out to ≥10 LVTTL loads.
Bus-Hold Current	±4 μA typical - Maintains stable logic level on unused A/B port pins without external pull-up/down resistors.
Input Hysteresis	≥300 mV - Rejects noise spikes on control lines (DIR, OE) in electrically noisy industrial environments.
ESD Protection	±2 kV HBM - Meets JEDEC JS-001 Class 2 requirements for robust handling during board assembly and field operation.

Pinout & Package

Package: 48-pin plastic TSSOP (240-mil wide, JEDEC MO-153), lead-free and RoHS compliant.

Pin/Terminal	Circuit Role	Design Meaning
1DIR, 2DIR	Direction Control Input	Determines data flow direction per 8-bit bank: HIGH = A→B, LOW = B→A; enables independent bus arbitration.
1OE, 2OE	Output Enable Input	Active-Low: HIGH disables both ports into high-impedance state; tie to V_CC via pull-up for power-up safety.
1A0–1A7, 2A0–2A7	Port A Data I/O	First and second 8-bit bidirectional data terminals connected to local bus or microcontroller interface.
1B0–1B7, 2B0–2B7	Port B Data I/O	Corresponding 8-bit bidirectional data terminals linked to remote bus, memory subsystem, or peripheral interface.
V_CC, GND	Power Supply	Multiple V_CC/GND pairs (pins 6, 17, 31, 42 and 4, 9, 10, 15, 20, 21, 28, 34, 39, 45) reduce switching noise and improve signal integrity.

Key Features

Feature	Design Value
Integrated 26Ω Series Output Resistors	Eliminates need for external termination components, reducing BOM count and PCB area for high-speed bus interfaces.
Bus-Hold Circuitry	Maintains last valid logic state on floating inputs, preventing metastability and eliminating external pull-up resistors.
Low Ground Bounce (V_OLP)	<0.8V typical at V_CC = 3.3V - Minimizes noise coupling into shared ground planes in dense digital systems.
Hysteresis on All Inputs	≥300 mV threshold margin - Ensures reliable edge detection on DIR/OE control signals under EMI or crosstalk conditions.
Industrial Temperature Range	–40°C to +85°C ambient - Qualified for use in automotive body electronics, industrial PLC backplanes, and telecom line cards.

Applications

PCI Express Add-in Card Interface

Industrial Backplane Data Bridge

Use Scenario: Isolating legacy parallel control buses from PCIe-based host controllers in modular test equipment.

IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver managing handshake signals and status data between 3.3V PCIe root complex and 3.3V peripheral bus.

Use Value: Integrated bus-hold prevents floating states during hot-plug events; 26Ω termination ensures clean signal edges on 100 mm backplane traces.

Use Scenario: Interfacing FPGA-configured I/O modules to centralized real-time controller over 20 cm backplane runs.

IC Role / Device Role / Timing Role: Dual 8-bit transceiver enabling simultaneous command upload and status readback with deterministic <9.4 ns propagation delay.

Use Value: Independent DIR/OE per bank allows concurrent read/write arbitration without external glue logic, reducing FPGA resource usage.

Automotive Body Control Module

Medical Imaging Data Acquisition

Use Scenario: Connecting microcontroller GPIO banks to distributed sensor/actuator clusters in vehicle door modules.

IC Role / Device Role / Timing Role: 16-bit bidirectional buffer isolating MCU I/O from CAN/LIN subsystems while supporting wake-on-event signaling.

Use Value: –40°C to +85°C rating and ±2 kV HBM ESD withstand ensure reliability in under-hood thermal cycling and assembly ESD events.

Use Scenario: Buffering parallel ADC output streams from multi-channel analog front-ends to FPGA-based digital processing pipelines.

IC Role / Device Role / Timing Role: High-speed 3-state transceiver synchronizing time-critical pixel data transfers with sub-10 ns timing budget.

Use Value: Low ground bounce (<0.8V) preserves SNR in sensitive analog-to-digital conversion paths by minimizing digital switching noise injection.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALVCH162245DGGR	TI part uses same 48-pin TSSOP but lacks bus-hold; requires external pull-ups on unused inputs.	Suitable for cost-sensitive consumer designs where board space permits discrete biasing.	Select when external resistor placement is acceptable and TI's qualification documentation is preferred.
74LVC162245APAG	IDT part supports 1.65–3.6V V_CC, wider voltage range but higher max t_PD (11.5 ns).	Better for mixed-voltage systems (e.g., 1.8V FPGA core + 3.3V peripherals) requiring broader supply tolerance.	Choose when interfacing with sub-2.3V logic families or when extended voltage flexibility outweighs speed penalty.

Compared with SN74ALVCH162245DGGR and 74LVC162245APAG, the PI74ALVCHR162245AE offers superior noise immunity via hysteresis and eliminates BOM overhead through integrated bus-hold-critical for space-constrained industrial and automotive modules where layout density and reliability are prioritized over marginal cost savings.

Availability

PI74ALVCHR162245AE is available at Aetrix Electronics and suitable for industrial backplane bridges, automotive body control modules, and medical imaging data acquisition systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for PI74ALVCHR162245AE 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-performance interface and signal-integrity solutions for computing, communications, and industrial markets before its 2016 acquisition.

The PI74ALVCHR162245AE belongs to the ALVCH logic family, engineered for low-voltage, high-speed bidirectional bus interfacing in noise-sensitive, thermally demanding environments-particularly targeting backplane, modular instrumentation, and automotive ECUs.

FAQ

What is the recommended power-up sequence for PI74ALVCHR162245AE?

Apply V_CC before asserting any input signals. Tie OE pins to V_CC via a 10 kΩ pull-up resistor to ensure outputs remain in high-impedance state during power ramp-up. Avoid floating DIR or OE inputs-bus-hold does not activate until V_CC exceeds 1.5V, so external biasing is mandatory for safe initialization.

Can PI74ALVCHR162245AE interface directly with 5V TTL logic?

No. Its absolute maximum input voltage is V_CC + 0.5V, and V_CC is limited to 3.6V. Applying 5V signals violates the –0.5V to V_CC + 0.5V input rating and risks permanent damage. Use level-shifting buffers like the TXB0108 if interfacing with 5V systems.

How does the bus-hold circuit interact with 3-state control?

Bus-hold remains active only when the associated port is in high-impedance state (OE = HIGH). It retains the last driven logic level on floating A or B pins but does not override active driving-when OE = LOW and DIR sets direction, bus-hold is disabled and outputs follow input data strictly.

Is thermal derating required for continuous operation at 85°C ambient?

Yes. At T_A = 85°C, maximum power dissipation must be limited to 0.6W (60% of 1.0W rated limit) per JEDEC JESD51-2 guidelines. Ensure PCB copper area ≥ 200 mm² per V_CC/GND pair and maintain airflow >0.5 m/s to sustain full-speed operation without junction temperature exceeding 125°C.

PI74ALVCHR162245AE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74ALVCHR

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:: 12mA, 12mA

Voltage - Supply:: 2.3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

PI74ALVCHR162245AE FAQ

1.How can I place an order for PI74ALVCHR162245AE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74ALVCHR162245AE 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 PI74ALVCHR162245AE reliable?

The price and inventory of PI74ALVCHR162245AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74ALVCHR162245AE is usually 5 days.

3.What payment methods are accepted for PI74ALVCHR162245AE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74ALVCHR162245AE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74ALVCHR162245AE?

PI74ALVCHR162245AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74ALVCHR162245AE 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 PI74ALVCHR162245AE?

For technical support, including PI74ALVCHR162245AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74ALVCHR162245AE requirements.

6.How does Aetrix verify that PI74ALVCHR162245AE is sourced from the original manufacturer or authorized distributors?

All PI74ALVCHR162245AE 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 PI74ALVCHR162245AE meets industry standards.

7.What is the process for return or replacement of PI74ALVCHR162245AE?

All PI74ALVCHR162245AE units undergo pre-shipment inspection (PSI). If there is an issue with PI74ALVCHR162245AE, 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 PI74ALVCHR162245AE part is unused and in its original packaging.

Return procedure for PI74ALVCHR162245AE:

1.Submit a request within 90 days.

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

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