BCT4257
The BCT4257 is a high-bandwidth, fast single-pole double-throw (SPDT) CMOS switch. It can be used as an analog switch or as a low-delay bus switch. Specified over a wide operating power supply voltage range, 1.65V to 5.5V, the BCT4257 has a maximum ON resistance of 9.0-ohms at 2.7V, 4.5-ohms at 4.5V.
Break-before-make switching prevents both switches being enabled simultaneously. This eliminates signal disruption during switching.
The control input, S, tolerates input drive signals up to 5.5V, independent of supply voltage.
FEATURES
CMOS Technology for Bus and Analog Applications
Low ON Resistance: 2.8ohms @ 4.5V
Wide VCC Range: 1.65V to 5.5V
Rail-to-Rail Signal Range
Control Input Overvoltage Tolerance: 5.5V min.
High Off Isolation: 57dB at 10MHz
54dB (10MHz) Crosstalk Rejection Reduces Signal Distortion
Break-Before-Make Switching
High Bandwidth: 300 MHz
Extended Industrial Temperature Range: –40°C to 85°C
Packaging (Pb-free & Green available):
APPLICATIONS
Cell Phones
PDAs
Portable Instrumentation
Battery Powered Communications
Computer Peripherals
