BCT4321 N USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability
G EN ERAL DESCRIPTION
The BCT4321N is a double-pole double-throw
(DPDT) analog switch with multiplexes USB2.0
and negative signal audio analog signals. One
Channel has wide bandwidth and low bit-to-bit
skew allow it to pass high-speed differential
signals with good signal integrity. Another channel
has ultra-L ow on resistance (2 5Q). Each switch is
bidirectional and offers lttle or no attenuation of
the signals at the outputs. Industry-leading
advantages include a propagation delay of less
than 250ps， resulting from its low channel
resistance and low I/O capacitance. Their high
channel-to-channel crosstalk rejection results in
minimal noise interference.
The
BCT4321N is available in Green
QFN1. .4X1.8-10 packages. It operates over an
ambient temperature range of -40°C to +85°C.
FEATURES
●Vcc Operating Range: 2.7V to 5.0V
●-3dB Bandwidth: 720MHz(USB Mode)
●Off Isolation: 66dB @1MHz
●Crosstalk Rejection: 86dB @1MHz
●Low ON Resistance.
2.5-ohm at VCC = 3.6 V (Audio Mode)
8.5-ohm at VCC = 3.6 V (USB Mode)
●Analog Signal Range:
Vcc-6. 5V to Vcc-2 (Audio Mode)
0V to VCC (USB Mode)
●Audio Channel Shunt Resistors for Pop & Click
Noise Reduction
●Power-off Protection on Common D+/R， D-/L
Ports
APPLICATIONS
Cell Phones
Hi-Fi Audio Switching
USB 2.0 High Speed Data Switching
USB 3.x Type C Switching
