1 Features
• 1.65 V to 3.6 V single-supply operation
• 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
• 1.8 V logic compatible control inputs
• 3.6 V tolerant control inputs
• Latch-up performance exceeds 100 mA per JESD
78, Class II
• ESD performance tested per JESD 22
– 2500-V human-body model (A114-B, Class II)
– 1500-V charged-device model (C101)
• ESD performance: NC/NO ports
– ±6-kV contact discharge (IEC 61000-4-2)
• 24-WQFN (4.00 mm × 4.00 mm) and 24-TSSOP
(7.90 mm × 6.60 mm) packages

2 Applications
• SD-SDIO and MMC two-port MUX
• PC VGA video MUX-video systems
• Audio and video signal routing

3 Description
The TS3A27518E is a bidirectional, 6-channel,
1:2 multiplexer-demultiplexer designed to operate
from 1.65 V to 3.6 V. This device can handle both
digital and analog signals, and can transmit signals
up to VCC in either direction. The TS3A27518E has
two control pins, each controlling three 1:2 muxes
at the same time, and an enable pin that put all
outputs in high-impedance mode. The control pins
are compatible with 1.8 V logic thresholds and are
backward compatible with 2.5 V and 3.3 V logic
thresholds.
The TS3A27518E allows any SD, SDIO, and
multimedia card host controllers to expand out to
multiple cards or peripherals because the SDIO
interface consists of 6-bits: CMD, CLK, and Data[0:3]
signals. This device will support other 6-bit interfaces
such a qSPI. The TS3A27518E has two control pins
that give additional flexibility to the user. For example,
the ability to mux two different audio-video signals
in equipment such as an LCD television, an LCD
monitor, or a notebook docking station.