hef4517b NXP Semiconductors, hef4517b Datasheet - Page 5

• Manufacturer Part Number: hef4517b
• Description: Dual 64-bit Static Shift Register
• Manufacturer: NXP Semiconductors

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FUNCTION TABLE
Notes
1. H = HIGH state (the more positive voltage)
CP
L = LOW state (the less positive voltage)
X = state is immaterial
Z = high impedance state
data entered
into 1st bit
data entered
into 1st bit
= positive-going transition
= negative-going transition
D
X
X
INPUTS
PE/EO
H
H
L
L
content of
16th bit
displayed
data at
O
into 17th bit
no change
16
entered
O
Z
16
content of
32nd bit
displayed
data at
O
33rd bit
no change
32
entered into
O
Z
32
INPUTS/OUTPUTS
content of
48th bit
displayed
data at
O
into 49th bit
no change
48
entered
O
Z
48
content of
64th bit
displayed
remains in
‘Z’ state
no change
O
Z
64
MODE
One 64-bit shift
register. The content of the
shift register is
shifted over one stage
Four 16-bit shift
register. The content of
the shift registers is
shifted over one stage.
no change
no change