CD4517BMS
CMOS Dual 64-Stage
Static Shift Register
December 1992
Features
Description
• High-Voltage Types (20-Volt Rating)
• Low Quiescent Current - 10nA/pkg (Typ.) at VDD = 5V
• Clock Frequency 12MHz (Typ.) at VDD = 10V
CD4517BMS dual 64-stage static shift
register consists of two independent registers
each having a clock, data, and write enable
input and outputs accessible at taps following
the 16th, 32rd, 48th, and 64th stages. These
taps also serve as input points allowing data
to be inputted at the 17th, 33rd, and 49th
stages when the write enable input is a logic
1 and the clock goes through a low-to-high
transition. The truth table indicates how the
clock and write enable inputs control the
opeation of the CD4517BMS. Inputs at the
intermediate taps allow entry of 64 bits into
the register with 16 clock pulses. The 3-state
outputs permit connection of this device to an
external bus.
• Schmitt Trigger Clock Inputs Allow Operation with Very Slow Clock
Rise and Fall Times
• Capable of Driving Two Low-power TTL Loads, One Low-power
Schottky TTL Load, or Two HTL Loads
• 3-State Outputs
• 100% Tested for Quiescent Current at 20V
• Standardized, Symmetrical Output Characteristics
• 5V, 10V, and 15V Parametric Ratings
• Meets all Requirements of JEDEC Tentative Standard No. 13B,
"Standard Specifications for Description of ‘B’ Series CMOS
Devices"
The CD4517BMS is supplied in these 16 lead
outline packages:
Braze Seal DIP
Frit Seal DIP
H4X
H1F
Applications
Ceramic Flatpack H6P
• Time-delay Circuits
• Scratch-pad Memories
• General-purpose Serial Shift-register Applications
Pinout
Functional Diagram
CD4517BMS
CL
TOP VIEW
CL
CL
CL
CL
Q16
Q32
Q48
Q64
Q16A
Q48A
WEA
CLA
1
2
3
4
5
6
7
8
16 VDD
15 Q16B
14 Q48B
13 WEB
12 CLB
11 Q64B
10 Q32B
D
D1
D17
D33
D49
16 STAGES
16 STAGES
16 STAGES
16 STAGES
WE = 0
WE = 1
WE
Q64A
Q32A
DA
STAGE 16
OUT/IN TAP
STAGE32
OUT/IN TAP
STAGE 48
OUT/IN TAP
STAGE 64
OUT/IN TAP
9
DB
VSS
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
File Number 3341
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7-1197