MC10H123

Features:

•Propagation Delay, 1.5 ns Typical
•Improved Noise Margin 150 mV (Over Operating Voltage and Temperature Range)
•Voltage Compensated
•MECL 10KCompatible


Pinout




Specifications

Characteristic	Symbol	Rating	Unit
PowerSupply (VCC= 0)	VEE	8.0 to 0	Vdc
InputVoltage (VCC= 0)	VI	0 to VEE	Vdc
Output Current- Continuous                - Surge	Iout	50 100	mA
Operating Temperature Range	TA	0 to +75
Storage Temperature Range- Plastic                                - Ceramic	Tstg	55 to +150 55 to +165

Description

The MC10H123 is a triple 433Input Bus Driver.

The MC10H123 consists of three NOR gates designed for bus driving applications on card or between cards. Output low logic levels are specified with V_OL= 2.1 Vdc so that the bus may be terminated to 2.0 Vdc. The gate output, when low, appears as a high impedance to the bus, because the outputemitterfollowers of the MC10H123 are "turnedoff." This eliminates discontinuities in the characteristic impedance of the bus.

The V_OH level of MC10H123 is specified when driving a 25ohm load terminated to 2.0Vdc, the equivalent of a 50ohm bus terminated at both ends. Although 25ohms is the lowest characteristic impedance that can be driven by the MC10H123, higher impedance values may be used with this part. A typical 50ohm bus is shown in Figure 1.