Motorola CMOS Logic, Руководство пользователя, Страница: 338 / 571

MOTOROLA CMOS LOGIC DATA MC14519B
6–300
TYPICAL CIRCUIT APPLICATIONS
DATA REGISTER SELECTION COMPARISON
DATA A
CLOCK A
RESET A
DATA B
CLOCK B
RESET B
4–BIT REGISTER A
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
4–BIT REGISTER B
DUAL 4–BIT REGISTER
MC14015B
CONTROL A
CONTROL B
A
B
X0 X1 X2 X3 Y0 Y1 Y2 Y3
INVERT
Z0 Z1 Z2 Z3
MC14519B
AND/OR SELECT/EXCL NOR
Q0 Q1 Q2 Q3
MC14070B
QUAD
EXCLUSIVE OR
CONVERSION TABLE
Operation Code Output
A B INV Q0 Q1 Q2 Q3 Function
0 0 0 0 0 0 0 Inhibit, all zeros
0 0 1 1 1 1 1 Inhibit, all ones
1 0 0 X0 X1 X2 X3 Control A
1 0 1 X0 X1 X2 X3 Control A and Invert
0 1 0 Y0 Y1 Y2 Y3 Control B
0 1 1 Y0 Y1 Y2 Y3 Control B and Invert
1 1 0 X0
ĥ
Y0 X1
ĥ
Y1 X2
ĥ
Y2 X3
ĥ
Y3 Exclusive NOR
1 1 1 X0
ę
Y0 X1
ę
Y1 X2
ę
Y2 X3
ę
Y3 Exclusive OR
This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However,
precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance
circuit. For proper operation, Vin and Vout should be constrained to the range VSS
≤
(Vin or Vout)
≤
VDD.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either VSS or VDD). Unused outputs must
be left open.