The CD4052BM96 is a differential 4-channel Analog Multiplexer having two binary control inputs, A and B and an inhibit input. The two binary input signals select 1 of 4 pairs of channels to be turned on and connect the analog inputs to the outputs. The device is digitally-controlled analog switches having low ON impedance and very low OFF leakage current. These multiplexer circuits dissipate extremely low quiescent power over the full VDD-VSS and VDD-VEE supply-voltage ranges, independent of the logic state of the control signals. When logic 1 is present at the inhibit-input terminal, all channels are off.

• 125Ω (typical) Low ON resistance over 15VP-P
• 18V Signal input range for VDD – VEE
• ±100pA (Typical) High OFF resistance, channel leakage at VDD-VEE = 18 V
• Logic-level conversion for digital addressing signals
• Binary address decoding on chip
• 100% Tested for quiescent current at 20V
• 1µA Maximum input current at 18V over full package temperature range, 100nA at 18V and 25°C
• Break-before-make switching eliminates channel overlap

The ISO1540 and ISO1541 devices are low-power, bidirectional isolators that are compatible with I 2C interfaces. These devices have logic input and output buffers that are separated by Texas Instruments Capacitive Isolation technology using a silicon dioxide (SiO2 ) barrier. When used with isolated power supplies, these devices block high voltages, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry.

This isolation technology provides for function, performance, size, and power consumption advantages when compared to optocouplers. The ISO1540 and ISO1541 devices enable a complete isolated I 2C interface to be implemented within a small form factor. The ISO1540 has two isolated bidirectional channels for clock and data lines while the ISO1541 has a bidirectional data and a unidirectional clock channel. The ISO1541 is useful in applications that have a single master while the ISO1540 is suitable for multimaster applications. For applications where clock stretching by the slave is possible, the ISO1540 device should be used.