SN74143

The SN74143 TTL MSI circuit contains the equivalent of 86 gates on a single chip.Logic inputs and outputs are completely TTL compatible.The buffered inputs are implemented with relatively large resistors in series with the bases of the input transistors to lower drive-current requirements to one-half of the required for a standard series 74 TTL input.

Features of the SN74143 are:(1)15mA constant-current outputs ,for driving common-anode LEDs such as TIL302 or TIL303 without series resistors; (2)universal logic capabilities,ripple blanking of extraneous zeros latch outputs can drive logic processors simultaneously; (3)decimal point driver is included; (4)synchronous BCD counter capability,cascadable to N-bits look-ahead-enable  techniques minimize speed degradation when cascaded for large-word display ,direct clear input.

The absolute maximum ratings of the SN74143 can be summarized as:(1)supply voltage,VCC:7V; (2)input voltage:5.5V; (3)operating free-air temperature range:0 to 70; (4)storage temperature range:-65 to 150.

The electrical characteristics(Ta=25) of the SN74143 can be summarized as:(1)VIK:-1.5V; (2)VOH:2.4V MIN ; (3)II:1mA; (4)ICC:56mA TYP 93mA MAX.If you want to know more information such as the electrical characteristics ,please download the datasheet in www.seekdatasheet.com .