monolithic integrated circuits, available in 16-lead
dualin-line plastic or ceramic package.
The HCC/HCF4517B dual 64-stagestaticshift register consists of two independent registers each
having a clock,data, andwriteenable inputandoutputs accessible at taps following the 16th, 32nd,
48th, and 64th stages. These taps also serve as
inputpointsallowing data to be inputtedat the 17th,
33rd,and 49th stages whenthe write enable input
is a logic 1 andthe clockgoes througha low-to-high
transition. The truth table indicates how the clock
andwrite enable inputs control the operation of the
HCC/HCF4517B. Inputs at the intermediate taps
allowentry of 64 bits intothe register with 16 clock
pulses. The3-stateoutputspermit connection ofthis
device toan external bus.
September 1988
1/12
HCC/HCF4517B
FUN CTION AL DIAG R A M (one half)
ABSOLUTE MAXIMUM RATIN GS
SymbolParameterValueUnit
*Supply Voltage :HCC Types
V
DD
HCF Types
V
Input Voltage– 0.5 to VDD+ 0.5V
i
I
DC Input Current (any one input)± 10mA
I
P
Total Power Dissipation (per package)
tot
Dissipation per Output Transistor
for T
T
Operating Tempera ture : HCC Types
op
= Full Package-temperature Range
op
HCF Types
T
Stresses above those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
* All voltages are with respect to VSS(GND).
Storage Temperature– 65 to + 150°C
stg
– 0.5 to + 20
– 0.5 to + 18
200
100
– 55 to + 125
–40to+85
V
V
mW
mW
°C
°C
RECOMMENDED OPERATING CO NDITIONS
SymbolParameterValueUnit
2/12
V
Supply Voltage : HCC T ypes
DD
HCF Types
V
Input Voltage0 to V
I
T
Operating Temperature : HC C Types
op
HCF Types
3to18
3to15
DD
–55to+125
–40to+85
V
V
V
°C
°C
LOGIC DIAGRAM AND TRUTH TABLE
HCC/HCF4517B
Clock
00XQ16Q32Q48Q64
01XZZZ Z
10XQ16Q32Q48Q64
11XZZZ Z
–
/
–
–
/
–
–
\
–
–
\
–
Write
Enable
0DI InQ16Q32Q48Q64
1Di InD17 InD33 InD49 InZ
0XQ16Q32Q48Q64
1XZZZ Z
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted byimplication or otherwiseunderany patentor patentrights ofSGS-THOMSONMicroelectronics. Specificationsmentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronicsproductsarenotauthorized foruse ascritical componentsin life supportdevicesorsystems without express
written approval of SGS-THOMSON Microelectonics.
1994 SGS-THOMSON Microelectronics - All Rights Reserved
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