Data sheet acquired from Harris Semiconductor

SCHS102C − Revised October 2003

The CD40147B CMOS encoder features priority

encoding of the inputs to ensure that only the

highest-order data line is encoded. Ten data

input lines (0-9) are encoded to four-line

(8, 4, 2, 1) BCD. The highest priority line is line 9.

All four output lines are logic 1 (VSS) when all

input lines are logic 0. All inputs and outputs are

buffered, and each output can drive one TTL

low-power Schottky load. The CD40147B is

functionally similar to the TTL54/74147 if pin 15

is tied low.

The CD40147B types are supplied in 16-lead

dual-in-line plastic packages (E suffix), 16-lead

small-outline packages (M, M96, MT, and NSR

suffixes), and 16-lead thin shrink small-outline

packages (PW and PWR suffixes).

Copyright

 2003, Texas Instruments Incorporated