TL191CN

The TL182, TL185, TL188, and TL191 are monolithic high-speed analog switches using Bl-MOS technology. They comprise JFET-input buffers, level translators, and output JFET switches. The TL182 switches are SPST; the TL185 switches are SPDT. The TL188 is a pair of complementary SPST switches as is each half of the TL191.
A high level at a control input of the TL182 turns the associated switch off. A high level at a control input of the TL185 turns the associated switch on. For the TL188, a high level at the control input turns the associated switches S1 on and S2 off.
The threshold of the input buffer is determined by the voltage applied to the reference input (Vref). The input threshold is related to the reference input by the equation Vth = Vref + 1.4 V. Thus, for TTL compati-bility, the Vref input is connected to ground. The JFET input makes the device compatible with bipolar, MOD, and CMOS logic families. Threshold compatibility may, again, be determined by Vth = Vref + 1.4 V. The output switches are junction field-effect transistors featuring low on-state resistance and high off-state resistance. The monolithic structure ensures uniform matching. BI-MOS technology is a major breakthrough in linear integrated circuit processing. BI-MOS can have ion-implanted JFETs, p-channel MOS-FETs, plus the usual bipolar components all on the same chip. BI-MOS provides for monolithic circuit designs that previously have been available only as expensive hybrids. M-suffix devices are characterized for operation over the full military temperature range of — 55°C to 125°C. I-suffix devices are characterized for operation from — 25°C to 85°C, and C-suffix devices are characterized for operation from 0°C to 70°C.