74VHC164SJ Fairchild Semiconductor, 74VHC164SJ Datasheet - Page 2

• Manufacturer Part Number: 74VHC164SJ
• Description: IC SHIFT REGISTER 8BIT 14SOP
• Manufacturer: Fairchild Semiconductor
• Series: 74VHCr

Specifications of 74VHC164SJ

• Logic Type: Shift Register
• Output Type: Standard
• Number Of Elements: 1
• Number Of Bits Per Element: 8
• Function: Serial to Parallel
• Voltage - Supply: 2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (5.3mm Width), 14-SOP, 14-SOIJ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

©1993 Fairchild Semiconductor Corporation
74VHC164 Rev. 1.4.0
Connection Diagram
Pin Description
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
logical 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.
A, B
CP
MR
Q
Names
0
–Q
Pin
7
Data Inputs
Clock Pulse Input (Active Rising Edge)
Master Reset Input (Active LOW)
Outputs
Description
0
the
2
Logic Symbol
Function Table
H
L
X
Q
referenced input or output one setup time prior to
the LOW-to-HIGH clock transition.
Reset (Clear)
Shift
Operating
LOW Voltage Levels
Immaterial
HIGH Voltage Levels
Lower case letters indicate the state of the
Mode
MR
H
H
H
H
L
Inputs
A
H
H
X
L
L
B
X
H
H
L
L
Q
H
L
L
L
L
0
Outputs
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Q
Q
Q
Q
Q
L–L
1
0
0
0
0
–Q
–Q
–Q
–Q
–Q
6
6
6
6
7