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Diodes Incorporated PI74ALVCH16260A
- Part No.:
- PI74ALVCH16260A
- Manufacturer:
- Diodes Incorporated
- Category:
- Latches
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74ALVCH16260A.pdf
- Description:
- IC 12/14-BIT MUX/LATCH 56-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,283
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Product details
Overview
PI74ALVCH16260A from Pericom Semiconductor is a 12-bit to 24-bit multiplexed D-type latch with 3-state outputs, designed for bidirectional data path multiplexing/demultiplexing in microprocessor bus interfaces and memory-interleaving systems. It operates from 2.3V to 3.6V, features bus-hold circuitry eliminating external pullups, supports industrial temperature range (–40°C to +85°C), and uses a 56-pin TSSOP package.
For engineers reviewing the PI74ALVCH16260A datasheet, PI74ALVCH16260A pinout, PI74ALVCH16260A application, or PI74ALVCH16260A equivalent, key selection criteria include latch-enable timing (tW = 3.3 ns min at VCC = 3.3V), output drive capability (±24 mA), bus-hold input retention, and 3-state control via OE1B/OE2B/OEA for bank-selectable transceiver operation.
Technical Context
This device implements dual 12-bit latched transceivers with independent latch-enable (LE1B/LE2B/LEA1B/LEA2B) and output-enable (OE1B/OE2B/OEA) controls, enabling selective storage and direction control between three I/O ports (A1–A12, 1B1–1B12, 2B1–2B12). The SEL input determines A-to-B or B-to-A data flow direction under active OE conditions.
It integrates hysteresis on all inputs for noise immunity, delivers low ground bounce (VOLP < 0.8V) and undershoot (VOHV < 2.0V) at 3.3V, and maintains high-impedance outputs during power-up/down when OE is pulled up to VCC. Bus-hold circuitry actively retains last valid logic state on floating inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - Enables interoperability with 2.5V and 3.3V logic domains without level shifters. |
| Propagation Delay (tPD) | 1.5 ns min to 6.6 ns max - Supports high-speed bus handshaking in memory-interleaved architectures. |
| Output Drive | ±24 mA - Sustains signal integrity across 50 Ω PCB traces with up to 10 cm routing. |
| Bus-Hold Current | ±40 μA - Maintains stable logic levels on unused inputs without external resistors, reducing BOM count. |
| Input Hysteresis | Typical 300 mV - Rejects fast transient noise on address/data lines in noisy industrial environments. |
| Operating Temperature | –40°C to +85°C - Qualified for deployment in industrial control cabinets and telecom line cards. |
| Power Dissipation | 1.0 W max - Compatible with standard TSSOP thermal pads and 2-layer PCB layouts. |
Pinout & Package
Package: 56-pin plastic TSSOP (240 mil wide), JEDEC MO-153 compliant, with exposed thermal pad recommended for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OEA, OE1B, OE2B | Active-low 3-state enable | Independent control of A-port and B-bank outputs; enables bank-selectable transceiver mode. |
| LE1B, LE2B, LEA1B, LEA2B | Latch-enable inputs | Edge-triggered storage control: HIGH = transparent, LOW = latch current inputs until next HIGH. |
| SEL | Direction select | Determines data flow direction (A↔1B or A↔2B) when OE signals are asserted. |
| A1–A12, 1B1–1B12, 2B1–2B12 | Bi-directional I/O terminals | Three independent 12-bit ports support simultaneous address/data demux or mux in dual-bank memory systems. |
Key Features
| Feature | Design Value |
|---|---|
| Bus-Hold Circuitry | Eliminates need for 24 external pullup/pulldown resistors on I/O lines, reducing layout area and assembly cost. |
| Low-Voltage Operation | 2.3V–3.6V supply range ensures compatibility with both 2.5V ASIC cores and 3.3V peripheral buses. |
| Output Ground Bounce Control | VOLP < 0.8V at 3.3V ensures reliable low-level signaling even during simultaneous 24-bit switching. |
| Industrial Temperature Rating | –40°C to +85°C ambient operation validated per JEDEC JESD22-A108, suitable for uncooled enclosures. |
Applications
| Microprocessor Address Bus Multiplexing | Memory Interleaving Controller |
|---|---|
Use Scenario: Multiplexing 24-bit address lines from two independent memory banks onto a shared 12-bit address bus in space-constrained embedded controllers. IC Role / Device Role / Timing Role: Bidirectional latch providing time-multiplexed address routing with precise LE timing control (tW ≥ 3.3 ns). Use Value: Reduces PCB layer count by consolidating dual-bank address paths into one physical bus, lowering interconnect complexity. | Use Scenario: Demultiplexing interleaved memory read/write cycles between two DDR SDRAM banks sharing a common data bus. IC Role / Device Role / Timing Role: 3-state-controlled transceiver managing data flow direction and isolation between banks using OE1B/OE2B. Use Value: Enables deterministic bank arbitration without contention, supporting >100 MHz burst transfers with sub-ns timing margins. |
| Industrial PLC I/O Expansion Module | Telecom Line Card Data Buffering |
Use Scenario: Isolating and latching sensor input data from multiple fieldbus segments before forwarding to a central MCU over a shared serial interface. IC Role / Device Role / Timing Role: Input latch with bus-hold retention holding last valid state during hot-swap or transient disconnect events. Use Value: Prevents spurious I/O transitions during maintenance windows, improving system fault tolerance and uptime. | Use Scenario: Buffering parallel control signals between FPGA-based packet scheduler and analog front-end ASIC in optical line terminals. IC Role / Device Role / Timing Role: Low-noise, high-drive latch ensuring clean signal edge integrity across 15 cm backplane traces. Use Value: Meets jitter budget (<15 ps RMS) for 10 Gbps PHY control loops by minimizing VOLP/VOHV-induced timing uncertainty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiplexed latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16260 | Same pinout and function; TI version lacks bus-hold on SEL/LE inputs. | Requires external pullups on control lines in floating scenarios. | Select if TI supply chain preference outweighs bus-hold convenience. |
| 74LVC16260 | Lower drive (±24 mA vs ±32 mA); no hysteresis on inputs. | Not suitable for noisy industrial environments without added filtering. | Prefer only in benign commercial environments with controlled EMI. |
Compared with SN74ALVCH16260 and 74LVC16260, PI74ALVCH16260A provides guaranteed bus-hold and input hysteresis - critical for robust operation in uncontrolled industrial signal environments where floating nodes and EMI are common.
Availability
PI74ALVCH16260A is available at Aetrix Electronics and suitable for microprocessor bus interfacing, memory-interleaving systems, and industrial I/O expansion modules requiring stable component supply and long-term lifecycle support.
Supply support for PI74ALVCH16260A 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 was a fabless provider of high-speed interface and timing solutions, acquired by Diodes Incorporated in 2016; legacy products maintain full datasheet compliance and industrial qualification.
The PI74ALVCH16260A belongs to the ALVCH advanced low-voltage CMOS latch family, engineered specifically for low-noise, high-density bus multiplexing in industrial and telecom infrastructure where signal integrity and latch reliability are non-negotiable.
FAQ
What is the purpose of the SEL pin on the PI74ALVCH16260A?
The SEL (Select) pin determines data flow direction between port A and the B-side ports: when SEL = HIGH, data flows from A to 1B; when SEL = LOW, data flows from A to 2B. This enables dynamic routing of a single 12-bit source to either of two 12-bit destinations without external logic, simplifying memory bank selection in interleaved architectures.
How does bus-hold functionality operate during 3-state mode?
During 3-state (high-impedance) output mode, bus-hold circuitry remains active on all data inputs (A1–A12, 1B1–1B12, 2B1–2B12), continuously monitoring and reinforcing the last driven logic state with ±40 μA current. This prevents floating inputs from drifting due to leakage or noise, eliminating the need for external pullup/pulldown resistors while maintaining deterministic logic levels.
Can PI74ALVCH16260A be used with 2.5V-only systems?
Yes - the device is fully specified down to VCC = 2.3V and supports 2.5V nominal operation with guaranteed timing (tPD ≤ 6.6 ns), drive strength (±24 mA), and noise margin (hysteresis ≥ 300 mV). Its 2.3V–3.6V range allows direct interfacing with 2.5V FPGAs, ASICs, and memory controllers without voltage translation.
What is the recommended power-up sequencing for OE pins?
To ensure outputs remain in high-impedance during power-up, OE1B, OE2B, and OEA must be held HIGH via pullup resistors (minimum value determined by driver sink capability) tied to VCC. This prevents bus contention before system initialization completes. The datasheet specifies a minimum pullup resistance based on the maximum sink current (100 μA) of the OE inputs.
PI74ALVCH16260A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74ALVCH
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- D-Type, Addressable
- Circuit:
- 12:24
- Output Type:
- Tri-State
- Voltage - Supply:
- 2.3V ~ 3.6V
- Independent Circuits:
- 1
- Delay Time - Propagation:
- 1ns
- Current - Output High, Low:
- 24mA, 24mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
PI74ALVCH16260A FAQ
1.How can I place an order for PI74ALVCH16260A through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74ALVCH16260A 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 PI74ALVCH16260A reliable?
The price and inventory of PI74ALVCH16260A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74ALVCH16260A is usually 5 days.
3.What payment methods are accepted for PI74ALVCH16260A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74ALVCH16260A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74ALVCH16260A?
PI74ALVCH16260A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74ALVCH16260A 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 PI74ALVCH16260A?
For technical support, including PI74ALVCH16260A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74ALVCH16260A requirements.
6.How does Aetrix verify that PI74ALVCH16260A is sourced from the original manufacturer or authorized distributors?
All PI74ALVCH16260A 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 PI74ALVCH16260A meets industry standards.
7.What is the process for return or replacement of PI74ALVCH16260A?
All PI74ALVCH16260A units undergo pre-shipment inspection (PSI). If there is an issue with PI74ALVCH16260A, 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 PI74ALVCH16260A part is unused and in its original packaging.
Return procedure for PI74ALVCH16260A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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