View sy10-100e157 datasheet:

SY10E157 QUAD 2:1 SY100E157 MULTIPLEXER FINAL FEATURES DESCRIPTION Individual select controls The SY10/100E157 contain four 2:1 multiplexers with differential outputs. The output data are controlled by the Extended 100E VEE range of –4.2V to –5.5V individual Select (SEL) inputs. The individual select 550ps max. D to Output control makes the devices well suited for random logic 800ps max. SEL to Output designs. Internal 75K? input pull-down resistors Fully compatible with industry standard 10KH, 100K ECL levels Available in 28-pin PLCC package BLOCK DIAGRAM PIN CONFIGURATION PIN NAMES Pin Function D0a – D3a Input Data a D0b – D3b Input Data b SEL0 – SEL3 Select Inputs Q0 – Q3 True Outputs Q0 – Q3 Inverted Outputs VCCO VCC to Output Rev.: E Amendment: /0 1