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HEF4517BDN/a19avaiDual 64-bit static shift register
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HEF4517BD-HEF4517BP-HEF4517BT
Dual 64-bit static shift register

Philips Semiconductors Product specification
Dual 64-bit static shift register HEF4517B
LSI
DESCRIPTION

The HEF4517B consists of two identical, independent
64-bit static shift registers. Each register has separate
clock (CP), data input (D), parallel
input-enable/output-enable (PE/EO) and four 3-state
outputs of the 16th, 32nd, 48th and 64th bit positions
(O16 to O64). Data at the D input is entered into the first bit
on the LOW to HIGH transition of the clock, regardless of
the state of PE/EO.
When PE/EO is LOW the outputs are enabled and the
device is in the 64-bit serial mode.
When PE/EO is HIGH the outputs are disabled (high
impedance OFF-state), the 64-bit shift register is divided
into four 16-bit shift registers with D, O16, O32 and O48as
data inputs of the 1st, 17th, 33rd, and 49th bit respectively.
Schmitt-trigger action in the clock input makes the circuit
highly tolerant to slower clock rise and fall times.
FAMILY DATA, IDD LIMITS category LSI

See Family Specifications
Philips Semiconductors Product specification
Dual 64-bit static shift register HEF4517B
LSI
PINNING

HEF4517BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4517BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)
HEF4517BT(D): 16-lead SO; plastic (SOT109-1) ): Package Designator North America
CPA, CPB clock inputs
PE/EOA, PE/EOB parallel input-enable/output-enable inputs
DA, DB data inputs
O16A, O32A, O48A 3-state outputs/inputs
O16B, O32B, O48B 3-state outputs/inputs
O64A, O64B 3-state outputs
Philips Semiconductors Product specification
Dual 64-bit static shift register HEF4517B
LSI
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Philips Semiconductors Product specification
Dual 64-bit static shift register HEF4517B
LSI
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FUNCTION T
ABLE
Notes
1.
HIGH state (the more positive voltage)
LOW state (the less positive voltage)
state is immaterial
high impedance state
positive-going transition
negative-going transition
Philips Semiconductors Product specification
Dual 64-bit static shift register HEF4517B
LSI
AC CHARACTERISTICS

VSS= 0 V; Tamb =25 °C; input transition times≤ 20 ns
AC CHARACTERISTICS

VSS= 0 V; Tamb =25 °C; CL= 50 pF; input transition times≤ 20 ns
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