MTC14 Fairchild Semiconductor, MTC14 Datasheet - Page 2

• Manufacturer Part Number: MTC14
• Description: 8-bit Serial-in, Parallel-out Shift Register
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Functional Description
The VHC164 is an edge-triggered 8-bit shift register with
serial data entry and an output from each of the eight
stages. Data is entered serially through one of two inputs
(A or B); either of these inputs can be used as an active
High Enable for data entry through the other input. An
unused input must be tied HIGH.
Each LOW-to-HIGH transition on the Clock (CP) input
shifts data one place to the right and enters into Q
ical AND of the two data inputs (A • B) that existed before
the rising clock edge. A LOW level on the Master Reset
(MR) input overrides all other inputs and clears the register
asynchronously, forcing all Q outputs LOW.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
0
the log-
2
Function Table
H
L
X
Q
one setup time prior to the LOW-to-HIGH clock transition.
Reset (Clear)
Shift
LOW Voltage Levels
HIGH Voltage Levels
Immaterial
Lower case letters indicate the state of the referenced input or output
Operating
Mode
MR
H
H
H
H
L
Inputs
A
H
H
X
L
L
B
H
H
X
L
L
Q
H
L
L
L
L
0
Outputs
Q
Q
Q
Q
Q
L–L
1
0
0
0
0
–Q
–Q
–Q
–Q
–Q
7
6
6
6
6