Datasheet SN74LS126A Equivalent ( PDF ) - Buffer

QUAD 3-STATE BUFFERS VCC E DOE DO 14 13 12 11 10 9 8 SN54, 74LS125A SN54, 74LS126A QUAD 3-STATE BUFFERS LOW POWER SCHOTTKY 1234567 ED OE D O GND LS125A VCC E DOE DO 14 13 12 11 10 9 8 1234567 ED OE D O GND LS126A LS125A TRUTH TABLES LS126A INPUTS INPUTS ED OUTPUT ED OUTPUT LL LH HX L H (Z) HL HH LX L H (Z) L = LOW Voltage Level H = HIGH Voltage Level X = Don’t C

SN74LS125A SN74LS126A Quad 3-State Buffers VCC E DOE DO 14 13 12 11 10 9 8 1234567 E D O E D O GND LS125A VCC E DOE DO 14 13 12 11 10 9 8 1234567 E D O E D O GND LS126A LS125A TRUTH TABLES LS126A INPUTS INPUTS ED OUTPUT ED OUTPUT LL LH HX L H (Z) HL HH LX L H (Z) L = LOW Voltage Level H = HIGH Voltage Level X = Don’t Care (Z) = High Impedance (off) GUARANTEED OPERATING RA

1. N channel 2. Enhancement mode 3. Logic Level

1. N channel Enhancement mode 2. Logic Level

1. N-Channel Enhancement mode Logic Level dv, dt rated 2. VDS 60 V RDS(on) 5 Ω ID 0.2 A

1. N-Channel Enhancement mode Logic Level dv, dt rated 2. VDS 60 V RDS(on) 5 Ω ID 0.23 A

The SN7101 is integrated a high stability band gap voltage reference, two ORed operational amplifiers and a current source. This IC compares the DC voltage and the current level at the output of a switching power supply to an internal reference.

It provides a feedback through an Opto-coupler to the PWM controller IC in the primary side. The controlled current generator can be used to modify the level of current limitation by offsetting the information coming from the current sensing resistor.

The SN7103 is a monolithic IC that includes one independent op-amp and another op-amp for which the non inverting input is wired to a 2.5V fixed Voltage Reference.