Overview
The SN74CBTLV3861DBQR is a 3.3-V, 10-bit FET bus switch produced by Texas Instruments. This device is designed to provide high-speed bus switching with minimal propagation delay. It features a single output-enable (OE) input that controls the connection between two ports. When OE is low, the switch is on, connecting port A to port B, and when OE is high, the switch is open, resulting in a high-impedance state between the ports. The device is fully specified for partial-power-down applications and supports Ioff to prevent backflow current when powered down.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SSOP (DBQ) | |
| Pins | 24 | |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 2.3 to 3.6 | V |
| High-Level Control Input Voltage (VCC = 2.3 V to 2.7 V) | 1.7 | V |
| High-Level Control Input Voltage (VCC = 2.7 V to 3.6 V) | 2 | V |
| Low-Level Control Input Voltage (VCC = 2.3 V to 2.7 V) | 0.7 | V |
| Low-Level Control Input Voltage (VCC = 2.7 V to 3.6 V) | 0.8 | V |
| Ioff Current | 10 | µA |
| ICC Current | 10 | µA |
| Mounting Type | Surface Mount | |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) | |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Key Features
- 5-Ω switch connection between two ports
- Rail-to-rail switching on data I/O ports
- Supports partial-power-down mode operation using Ioff
- Flow-through architecture optimizes PCB layout
- Latch-up performance exceeds 100 mA per JESD 78, Class II
Applications
The SN74CBTLV3861DBQR is suitable for various high-speed bus switching applications, including:
- High-speed data transmission systems
- Bus isolation and switching in digital systems
- Partial-power-down applications where power conservation is critical
- PCB designs requiring minimal propagation delay and low on-state resistance
Q & A
- What is the operating temperature range of the SN74CBTLV3861DBQR?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for this device?
The supply voltage range is 2.3 V to 3.6 V.
- How many bits of bus switching does the SN74CBTLV3861DBQR provide?
The device provides ten bits of high-speed bus switching.
- What is the purpose of the Ioff feature?
The Ioff feature ensures that damaging current will not backflow through the device when it is powered down.
- What type of package does the SN74CBTLV3861DBQR come in?
The device comes in a 24-pin SSOP (DBQ) package.
- Is the SN74CBTLV3861DBQR RoHS compliant?
Yes, the device is lead free and RoHS compliant.
- What is the latch-up performance of the SN74CBTLV3861DBQR?
The latch-up performance exceeds 100 mA per JESD 78, Class II.
- How does the flow-through architecture benefit PCB layout?
The flow-through architecture optimizes PCB layout by allowing for more efficient and compact designs.
- What is the recommended way to ensure the high-impedance state during power up or power down?
OE should be tied to VCC through a pullup resistor.
- What are some common applications for the SN74CBTLV3861DBQR?
Common applications include high-speed data transmission systems, bus isolation and switching, and partial-power-down applications.
