Overview
The TS3A27518E, produced by Texas Instruments, is a bidirectional, 6-channel, 1:2 multiplexer-demultiplexer. This device is designed to operate from a single supply voltage ranging from 1.65 V to 3.6 V, making it versatile for various applications. It can handle both digital and analog signals and is capable of transmitting signals up to VCC in either direction. The TS3A27518E features two control pins, each controlling three 1:2 multiplexers simultaneously, and an enable pin that puts all outputs in high-impedance mode. This device is particularly useful for expanding the capabilities of SD, SDIO, and multimedia card host controllers to multiple cards or peripherals.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 1.65 to 3.6 | V |
| Switch Capacitance | 21.5 | pF (typical) |
| Bandwidth | Up to 240 | MHz |
| Crosstalk and OFF Isolation | -62 | dB |
| ESD Performance (Human-Body Model) | ±2500 | V (JESD 22, Class II) |
| ESD Performance (Charged-Device Model) | ±1500 | V (JESD 22, C101) |
| ESD Performance (Contact Discharge) | ±6 kV | (IEC 61000-4-2) |
| Logic Compatibility | 1.8 V, 2.5 V, 3.3 V | |
| Package Options | 24-WQFN (4.00 mm × 4.00 mm), 24-TSSOP (7.90 mm × 6.60 mm) | |
| Operating Temperature Range | -40 to 85 | °C |
Key Features
- Single-supply operation from 1.65 V to 3.6 V
- Isolation in power-down mode (VCC = 0)
- Low-capacitance switches (21.5 pF typical)
- Bandwidth up to 240 MHz for high-speed rail-to-rail signal handling
- Crosstalk and OFF isolation of -62 dB
- ESD performance tested per JESD 22 (±2500 V human-body model, ±1500 V charged-device model)
- ESD performance: ±6 kV contact discharge (IEC 61000-4-2)
- 1.8 V logic compatible control inputs, backward compatible with 2.5 V and 3.3 V logic thresholds
- Latch-up performance exceeds 100 mA per JESD 78, Class II
- Enable pin to put all outputs in high-impedance mode
Applications
- SD-SDIO and MMC two-port multiplexers
- PC VGA video multiplexers in video systems
- Audio and video signal routing in equipment such as LCD televisions, LCD monitors, and notebook docking stations
- Support for other 6-bit interfaces like qSPI
- Expansion of SD, SDIO, and multimedia card host controllers to multiple cards or peripherals
Q & A
- What is the operating voltage range of the TS3A27518E?
The TS3A27518E operates from a single supply voltage ranging from 1.65 V to 3.6 V.
- What is the typical switch capacitance of the TS3A27518E?
The typical switch capacitance is 21.5 pF.
- What is the bandwidth of the TS3A27518E for high-speed signal handling?
The bandwidth is up to 240 MHz.
- What are the ESD performance specifications of the TS3A27518E?
The ESD performance is tested per JESD 22 (±2500 V human-body model, ±1500 V charged-device model) and ±6 kV contact discharge (IEC 61000-4-2).
- What logic thresholds are the control inputs compatible with?
The control inputs are compatible with 1.8 V logic thresholds and are backward compatible with 2.5 V and 3.3 V logic thresholds.
- What is the purpose of the enable pin in the TS3A27518E?
The enable pin puts all outputs in high-impedance mode when set to logic high.
- What are the package options available for the TS3A27518E?
The device is available in 24-WQFN (4.00 mm × 4.00 mm) and 24-TSSOP (7.90 mm × 6.60 mm) packages.
- What is the operating temperature range of the TS3A27518E?
The operating temperature range is -40°C to 85°C.
- Can the TS3A27518E handle both digital and analog signals?
Yes, the TS3A27518E can handle both digital and analog signals.
- What types of interfaces does the TS3A27518E support?
The device supports SD, SDIO, and multimedia card interfaces, as well as other 6-bit interfaces like qSPI.
