9-bit odd/even parity generator/checker 74F280B
FEATURES
• High-impedance NPN base inputs for reduced loading
(20mA in Low and High states)
• Buffered inputs — one normalized load
• Word length easily expanded by cascading
• Industrial temperature range available (–40°C to +85°C)
DESCRIPTION
The 74F280B is a 9-bit Parity Generator or Checker commonly used
to detect errors in high speed data transmission or data retrieval
systems. Both Even (RE) and Odd (RO) parity outputs are available
for generating or checking even or odd parity on up to 9 bits.
The Even (RE) parity output is High when an even number of Data
inputs (I0 - I8) are High. The Odd (RO) parity output is High when an
odd number of Data inputs are High.
Expansion to larger word sizes is accomplished by tying the Even
(RE) outputs of up to nine parallel devices to the data inputs of the
final stage. This expansion scheme allows an 81-bit data word to be
checked in less than 20ns.
데이터시트 보기
* 본 제품은 경우에 따라 호환되는 타사 제품으로 변경될 수 있음을 알려 드립니다.
주문시 참고 하세요~~
|
