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Micrel, Inc.
9-BIT LATCH WITH PARITY
SY10E175
SY1S0YE10107E5175
SY100E175
FEATURES
s 9-bit latch s Extended 100E VEE range of –4.2V to –5.5V s Parity detection/generation s 800ps max. D to Output s Reset s Internal 75KΩ input pull-down resistors s Fully compatible with Motorola MC10E/100E175 s Available in 28-pin PLCC package
BLOCK DIAGRAM
D0
D8
DQ
EN R
bits 1–7
Q0
DQ
EN R
Q8
DESCRIPTION
The SY10/100E175 are 9-bit latches. They also feature a tenth latched output (ODDPAR) which is formed as the odd parity of the nine data inputs (ODDPAR is HIGH if an odd number of the inputs are HIGH).
The E175 can also be used to generate byte parity by using D8 as the parity-type select (L = even parity, H = odd parity) and using ODDPAR as the byte parity output.