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Diodes Incorporated PI74AUC164245KE
- Part No.:
- PI74AUC164245KE
- Manufacturer:
- Diodes Incorporated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
PI74AUC164245KE.pdf
- Description:
- IC TRANSLATOR BIDIR 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,611
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Product details
Overview
PI74AUC164245KE from Pericom Semiconductor is a 16-bit dual-octal noninverting bus transceiver with independent VCCA (0.8–2.7V) and VCCB (0.8–2.7V) rails, enabling bidirectional level translation between mismatched voltage domains. It supports IOFF partial power-down, delivers ±9mA drive at 2.3V, and operates from –40°C to +85°C in industrial environments - used in FPGA-to-ASIC interconnects requiring voltage-agile data routing.
For engineers reviewing the PI74AUC164245KE datasheet, PI74AUC164245KE pinout, PI74AUC164245KE application, or PI74AUC164245KE equivalent, key selection criteria include dual-rail configurability, IOFF-enabled isolation during power sequencing, 3-state output control timing (tpd ≤ 2.6ns at 2.5V), and TVSOP-48 package thermal resistance (107°C/W).
Technical Context
The PI74AUC164245KE implements two independent 8-bit transceiver sections (1DIR/1OE and 2DIR/2OE), each with direction-controlled bidirectional data flow between A- and B-side I/O ports. Control inputs (DIR, OE) are referenced solely to VCCA, while data pins on each side operate within their respective supply domain (VCCA for A-port, VCCB for B-port).
Its IOFF circuitry actively disables outputs when either VCCA or VCCB is at 0V, blocking reverse current up to ±10mA and preventing bus contention during hot-insertion or staggered power-up sequences. The device meets JESD22-A114-B (2000V HBM) and JESD22-A115-A (200V MM) ESD standards without external protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Range (VCCA/VCCB) | 0.8V to 2.7V - enables direct interfacing between 1.2V FPGA I/O and 1.8V memory subsystems without external level shifters. |
| IOFF Current | ±10µA max at 0V supply - ensures safe isolation during partial power-down without latch-up risk per JESD78 (>100mA). |
| Output Drive | ±9mA at 2.3V - sustains clean signal integrity driving 15pF loads across 2.5V logic families with <2.6ns propagation delay. |
| Propagation Delay (tpd) | 2.2ns (A→B) / 2.2ns (B→A) at VCCA=VCCB=2.5V - supports >300MHz data rates in high-speed parallel buses. |
| ESD Rating | 2000V HBM, 200V MM - eliminates need for discrete TVS diodes in board-level ESD protection schemes. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, motor drive, and telecom infrastructure applications. |
| Power Dissipation Cap. | 3pF (VCCA), 14pF (VCCB) - minimizes dynamic power in low-voltage, high-frequency switching scenarios. |
Pinout & Package
PI74AUC164245KE is housed in a Pb-free, RoHS-compliant 48-pin TVSOP (173-mil width) with 0.4mm pitch, optimized for high-density PCB layouts and thermal performance (θJA = 107°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Active-HIGH signal referenced to VCCA; determines data flow direction per 8-bit section (A↔B). |
| 1OE, 2OE | Output Enable Input | Active-LOW control referenced to VCCA; places associated 8-bit port outputs in high-impedance state. |
| 1A1–1A8, 2A1–2A8 | A-Side I/O Port | Bidirectional data pins powered by VCCA; tolerate –0.5V to VCCA+0.5V during hot-swap transitions. |
| 1B1–1B8, 2B1–2B8 | B-Side I/O Port | Bidirectional data pins powered by VCCB; tolerate –0.5V to VCCB+0.5V, enabling robust level shifting. |
| VCCA, VCCB | Independent Supply Rails | Separate power inputs allow asymmetric operation (e.g., VCCA=1.2V, VCCB=1.8V) without internal regulation. |
| GND | Ground Reference | Common return path for both supply domains; requires low-inductance layout to maintain noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply rails | VCCA and VCCB each configurable from 0.8V to 2.7V - eliminates need for external voltage translators in mixed-voltage SoC interfaces. |
| IOFF partial power-down | Outputs automatically enter high-Z when either VCCA or VCCB = 0V - prevents back-drive damage during power sequencing in modular systems. |
| 3-state output control | Separate 1OE/2OE pins per 8-bit bank - enables selective bus isolation without affecting adjacent data lanes. |
| Low propagation delay | tpd ≤ 2.2ns (A↔B) at 2.5V - supports timing-critical applications like DDR memory co-processors and real-time sensor fusion. |
| Pb-free & Green packaging | TVSOP-48 (K) meets RoHS/REACH and JEDEC J-STD-020 moisture sensitivity level 3 - suitable for lead-free reflow assembly. |
Applications
| Industrial PLC Backplane Interface | FPGA-to-ASIC Voltage Translation |
|---|---|
|
Use Scenario: Interfacing 1.2V FPGA I/O banks with legacy 2.5V industrial I/O modules over a shared backplane bus. IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver managing asynchronous data exchange between mismatched voltage domains. Use Value: Eliminates discrete resistor-divider networks and reduces board area by 40% versus discrete MOSFET-based solutions. |
Use Scenario: Connecting a 1.8V ASIC control interface to a 2.5V sensor hub in an automated test equipment (ATE) platform. IC Role / Device Role / Timing Role: Dual-rail bus transceiver providing direction-controlled, low-latency data transfer with precise timing margins. Use Value: Achieves sub-3ns tpd consistency across temperature, enabling reliable 300MHz parallel bus operation without timing closure issues. |
| Automotive ADAS Camera Link | Medical Imaging Data Aggregation |
|
Use Scenario: Bridging MIPI CSI-2 camera sensors (1.2V I/O) to a 1.8V image processing SoC in an automotive surround-view system. IC Role / Device Role / Timing Role: Level-shifting transceiver supporting hot-plug detection and power sequencing compliance per ISO 11898-2. Use Value: IOFF functionality prevents bus contention during camera module insertion/removal, meeting ASIL-B functional safety requirements. |
Use Scenario: Aggregating parallel pixel data streams from multiple 1.5V CMOS image sensors into a 2.5V FPGA-based reconstruction engine. IC Role / Device Role / Timing Role: 16-bit bidirectional transceiver with independent enable controls for synchronized multi-channel data capture. Use Value: Enables simultaneous readout of four 8-bit sensor channels with matched skew (<150ps), critical for real-time tomographic reconstruction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level-shifting transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCH16T245DGGR | Wider VCC range (1.2–3.6V), higher drive (±12mA), but no IOFF support. | Lacks partial power-down capability - unsuitable for hot-swap or staggered supply sequencing. | Select when maximum drive strength is prioritized over power-down safety in fixed-supply systems. |
| TXB0108PWR | Auto-direction sensing, lower drive (±2mA), single-supply biasing (VCCA only). | No DIR/OE pins - incompatible with synchronous bus protocols requiring explicit direction control. | Prefer for simple GPIO expansion where direction is software-determined and speed <100MHz. |
Compared with SN74AVCH16T245DGGR and TXB0108PWR, PI74AUC164245KE uniquely balances dual-rail flexibility, IOFF-enabled safety, and sub-3ns timing - making it optimal for industrial and automotive systems demanding both voltage agility and robust power sequencing.
Availability
PI74AUC164245KE is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA-to-ASIC interconnects, and automotive ADAS camera links requiring stable component supply and long-term lifecycle assurance.
Supply support for PI74AUC164245KE 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 PI74AUC164245KE belongs to Pericom's AUC ultra-low-voltage logic family, designed specifically for energy-efficient, mixed-voltage system interconnects in space-constrained industrial and automotive electronics.
FAQ
What is the minimum operating voltage for VCCA and VCCB?
The PI74AUC164245KE supports VCCA and VCCB down to 0.8V, verified across –40°C to +85°C. At 0.8V, it maintains functional operation with VIH = 0V and VIL = 0V for control inputs, and delivers ±0.7mA output drive with tpd ≤ 8.5ns - sufficient for ultra-low-power sensor interface applications.
How does IOFF protect the device during partial power-down?
When either VCCA or VCCB drops to 0V, the IOFF circuit disables all outputs, limiting reverse current to ±10µA. This prevents damaging backflow through I/O pins into powered domains, satisfying JESD78 latch-up immunity (>100mA) and enabling safe hot-swap in modular systems.
Can PI74AUC164245KE translate between 1.2V and 3.3V logic?
No - absolute maximum ratings limit VCCA and VCCB to 3.6V, but recommended operation caps both at 2.7V. For 1.2V-to-3.3V translation, use a dedicated level shifter like TXS0108E, as exceeding 2.7V risks parametric degradation and reduced reliability per datasheet Section "Maximum Ratings".
Is the TVSOP-48 package compatible with standard TSSOP-48 footprints?
No - the PI74AUC164245KE uses a 173-mil wide TVSOP package (K suffix), whereas TSSOP-48 (A suffix) is 240-mil wide. Their pad layouts differ: TVSOP has 0.4mm pitch and 6.0×6.2mm body; TSSOP has 0.5mm pitch and 12.4×6.0mm body - requiring distinct PCB land patterns.
PI74AUC164245KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74AUC
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Obsolete
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 2
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 0.8 V ~ 2.7 V
- Voltage - VCCB:
- 0.8 V ~ 2.7 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFSOP (0.173", 4.40mm Width)
PI74AUC164245KE FAQ
1.How can I place an order for PI74AUC164245KE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74AUC164245KE 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 PI74AUC164245KE reliable?
The price and inventory of PI74AUC164245KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74AUC164245KE is usually 5 days.
3.What payment methods are accepted for PI74AUC164245KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74AUC164245KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74AUC164245KE?
PI74AUC164245KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74AUC164245KE 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 PI74AUC164245KE?
For technical support, including PI74AUC164245KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74AUC164245KE requirements.
6.How does Aetrix verify that PI74AUC164245KE is sourced from the original manufacturer or authorized distributors?
All PI74AUC164245KE 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 PI74AUC164245KE meets industry standards.
7.What is the process for return or replacement of PI74AUC164245KE?
All PI74AUC164245KE units undergo pre-shipment inspection (PSI). If there is an issue with PI74AUC164245KE, 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 PI74AUC164245KE part is unused and in its original packaging.
Return procedure for PI74AUC164245KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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