7445: BCD to 1-of-10 Decoder/Driver (30-Volt, 80-mA Output)

This package accepts a 1-2-4-8 Binary Coded Decimal (BCD) input code and provides a grounded output for the selected state. All other outputs remain an open circuit. For instance, a 0111 input or "1" = 1 , "2" = 1, "4" = 1, and "8" = 0 gives output line No. 7 a low state; all others remain open circuited.

Outputs can sink up to 80 milliamperes in the low state and withstand up to 30 volts in the off state. An output-high condition can only be obtained by a resistor or lamp load pulling up to some voltage less than 30. Note that the supply voltage for this package must be +5 volts.

The package can serve as a binary to 1 -of-8 decoder by grounding pin No. 12.

Slight settling glitches and overlaps during address (input) changes are possible. Any input code over 1001 sends all inputs to the open-circuit condition.

Pinout
Pin # Pin Assignment
1 Output 0
2 Output 1
3 Output 2
4 Output 3
5 Output 4
6 Output 5
7 Output 6
8 Ground
9 Output 7
10 Output 8
11 Output 9
12 Input 8
13 Input 4
14 Input 2
15 Input 1
16 Power (+5V)

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