Overview
The 74VCX164245MTDX, produced by onsemi, is a dual supply, 16-bit translating transceiver designed for two-way asynchronous communication between buses at different supply voltages. This component facilitates true signal translation between buses operating at different voltage levels, ranging from 1.65V to 3.6V. The device is particularly useful in mixed voltage applications, such as notebook computers that use a 1.8V CPU and 3.3V peripheral components. It is fabricated using Advanced CMOS technology, ensuring high-speed operation with low power dissipation.
Key Specifications
| Parameter | Min | Max | Units |
|---|---|---|---|
| VCCA (Lower Potential Rail) | 1.65 | 2.7 | V |
| VCCB (Higher Potential Rail) | 2.3 | 3.6 | V |
| Propagation Delay (A to B) | 0.8 | 5.5 | ns |
| Propagation Delay (B to A) | 0.8 | 5.5 | ns |
| Static Drive (IOH/IOL) @ 3.0V VCC | ±24 | mA | |
| Static Drive (IOH/IOL) @ 2.3V VCC | ±18 | mA | |
| Static Drive (IOH/IOL) @ 1.65V VCC | ±6 | mA | |
| ESD Performance (Human Body Model) | >2000 | V | |
| ESD Performance (Machine Model) | >200 | V | |
| Package Type | TSSOP-48 |
Key Features
- Bidirectional interface between buses ranging from 1.65V to 3.6V
- Supports Live Insertion and Withdrawal
- Static Drive (IOH/IOL) ±24 mA @ 3.0V VCC, ±18 mA @ 2.3V VCC, ±6 mA @ 1.65V VCC
- Functionally compatible with 74 series 16245
- Latchup performance exceeds 300 mA
- ESD performance: Human Body Model >2000V, Machine model >200V
- Uses patented noise/EMI reduction circuitry
- Packaged in plastic Fine-Pitch Ball Grid Array (FBGA) and Thin Shrink Small Outline Package (TSSOP)
Applications
The 74VCX164245MTDX is suitable for various mixed voltage applications, including:
- Notebook computers using a 1.8V CPU and 3.3V peripheral components
- Other mixed voltage systems where signal translation between different voltage buses is required
Q & A
- What is the primary function of the 74VCX164245MTDX?
The primary function is to provide true signal translation for two-way asynchronous communication between buses at different supply voltages.
- What are the voltage ranges for VCCA and VCCB?
VCCA operates from 1.65V to 2.7V, and VCCB operates from 2.3V to 3.6V.
- How does the Transmit/Receive (T/R) input work?
The T/R input determines the direction of data flow. Transmit (active-HIGH) enables data from A Ports to B Ports, while Receive (active-LOW) enables data from B Ports to A Ports.
- What is the purpose of the Output Enable (OE) input?
The OE input, when HIGH, disables both A and B Ports by placing them in a High-Z condition.
- Is the 74VCX164245MTDX compatible with other 74 series components?
Yes, it is functionally compatible with the 74 series 16245.
- What are the ESD performance specifications?
The ESD performance is >2000V for the Human Body Model and >200V for the Machine Model.
- Does the 74VCX164245MTDX support live insertion and withdrawal?
Yes, it supports live insertion and withdrawal.
- What are the package types available for the 74VCX164245MTDX?
The component is available in TSSOP-48 and FBGA packages.
- How does the component handle noise and EMI?
The component uses patented noise/EMI reduction circuitry.
- What is the latchup performance of the 74VCX164245MTDX?
The latchup performance exceeds 300 mA.
