SN74LS685

The SN74LS685 is designed as one kind of 8-bit magnitude / identity comparator device that has some points of features:(1)compares two 8-bit words;(2)choice of totem-pole or open-collector outputs;(3)hysteresis at P and Q inputs;(4)this device has 20-k pullup resistors on the Q inputs.

The absolute maximum ratings of the SN74LS685 can be summarized as:(1)supply voltage: 4.5 to 5.5 V;(2)input voltage: 5.5 V or 7 V;(3)off-state output voltage: 7 V;(4)operating free-air temperature range: -55 to +125;(5)storage temperature range: -65 to +150.

And the electrical characteristics of the SN74LS685 can be summarized as:(1)high-level input voltage: 2.0 V;(2)low-level input voltage: 0.7 V;(3)input clamp voltage: -0.65 to -1.5 V;(4)high-level output voltage: 2.5 V;(5)low-level output voltage: 0.25 to 0.4 V;(6)high-level input current: 20 uA;(7)short-circuit output current: -20 to -100 mA. If you want to know more information about it, please download the datasheet in www.seekic.com or www.chinaicmart.com .