74F676PC Fairchild Semiconductor, 74F676PC Datasheet - Page 2

• Manufacturer Part Number: 74F676PC
• Description: IC REG SER-IN SER-PAR OUT 24-DIP
• Manufacturer: Fairchild Semiconductor
• Series: 74Fr

Specifications of 74F676PC

• Logic Type: Shift Register
• Output Type: Standard
• Number Of Elements: 1
• Number Of Bits Per Element: 16
• Function: Parallel or Serial to Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 74F676

www.fairchildsemi.com
Unit Loading/Fan Out
Functional Description
The 16-bit shift register operates in one of three modes, as
indicated in the Shift Register Operations Table.
HOLD— a HIGH signal on the Chip Select (CS) input pre-
vents clocking, and data is stored in the sixteen registers.
Shift/Serial Load— data present on the SI pin shifts into
the register on the falling edge of CP. Data enters the Q
position and shifts toward Q
appearing on the SO pin.
Parallel Load— data present on P
the register on the falling edge of CP. The SO output repre-
sents the Q
To prevent false clocking, CP must be LOW during a
LOW-to-HIGH transition of CS.
Block Diagram
15
register output.
P
CS
CP
M
SI
SO
0
Pin Names
–P
15
15
on successive clocks, finally
Parallel Data Inputs
Chip Select Input (Active LOW)
Clock Pulse Input (Active LOW)
Mode Select Input
Serial Data Input
Serial Output
0
–P
15
are entered into
Description
0
2
Shift Register Operations Table

H
X
L
LOW Voltage Level
HIGH Voltage Level
Immaterial
HIGH-to-LOW Transition
CS
H
L
L
Control Input
HIGH/LOW
50/33.3
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
U.L.
M
X
H
L
CP


X
Output I
20 A/ 0.6 mA
20 A/ 0.6 mA
20 A/ 0.6 mA
20 A/ 0.6 mA
20 A/ 0.6 mA
Input I
1 mA/20 mA
Hold
Shift/Serial Load
Parallel Load
IH
OH
Operating Mode
/I
/I
IL
OL