National Semiconductor MM452
The MM450, and MM550 series each contain four p channel MOS enhancement mode transistors built on a single monolithic chip. The four transistors are arranged as follows: MM450, MM550 MM451, MM551 MM452, MM552 MM455, MM555 Dual Differential Switch Four Channel Switch Four MOS Transistor Package Three MOS Transistor Package These devices are useful in many airborne and ground support systems requiring multiplexing, analog transmission, and numerous signal routing applications. The use of low threshold transistors (VTH = 2 volts) permits operations with large ana- log input swings (± 10 volts) at low gate voltages (~20 volts).