Heathkit SB-104 - Page 73

Page 277
rz-lwa-u=.irla
IC103' ICLo5' IC107' NOTE; tn . BIT TIME BEFORE CLOCK '
IC109, IClll
PART N0.443-13
NEGATIVE-GOING TRANSITION.
SN7475N
tn+l - BIT TIME AFTER CLOCK
NEGATIVE-GOING TRANSITION.
Q
J <LOTI: K
K CLOCK J
lClOl
PART NO. 443-70
SN74HIO3CU
TRUTH TABLE
NOTE:
1. - BIT TIME BEFORE
CLOCK PULSE
I - BIT TIME AFTER
CLOCK
PULSi
TRUTH TABLE
IBCDI (SEE NOTE1
ASYNCHRONOUS INPUT: LOW INPUT TO CLEAR SETS
QA, Qg. QC AN0 Qg LOW.
OUTPUT
QA CONNECTED
TO CLOCK-2 INPUT.
IClOZ. IC104. ICl06.
IC108, lCll0
PART NO. 443-628
74196