3-State Outputs Drive Bus Lines Directly
Encodes 8 Data Lines to 3-Line Binary (Octal)
Applications Include:
N-Bit Encoding
Code Converters and Generators
Typical Data Delay... 15 ns
Typical Power Dissipation . . . 60 mW

description
These TTL encoders feature priority decoding of the
inputs to ensure that only the highest-order data line
is encoded. The ‘LS348 circuits encode eight data
lines to three-line (4-2-1) binary (octal). Cascading
circuitry (enable input E1 and enable output EO) has
been provided to allow octal expansion. Outputs AO,
Al, and A2 are implemented in threestate logic for
easy expansion up to 64 lines without the need for
external circuitry. See Typical Application Data.