CD40100BMS
CMOS 32-Stage Static
Left/Right Shift Register
December 1992
Features
Description
• High Voltage Type (20V Rating)
• Fully Static Operation
CD40100BMS is a 32-Stage shift register containing 32
D-type master-slave flip-flops.
The data present at the SHIFT RIGHT INPUT is transferred
into the first register stage synchronously with the positive
CLOCK edge, provided the LEFT/RIGHT CONTROL is at a
low level, the RECIRCULATE CONTROL is at a high level,
and the CLOCK INHIBIT is low. If the LEFT/RIGHT
CONTROL is at a high level and the RECIRCULATE
CONTROL is also high, data at the SHIFT LEFT INPUT is
transferred into the 32nd register stage synchronously with
the positive CLOCK transition, provided the CLOCK INHIBIT
is low. The state of the LEFT/RIGHT CONTROL,
RECIRCULATE CONTROL, and CLOCK INHIBIT should not
be changed when the CLOCK is high.
• Shift Left/Shift Right Capability
• Multiple Package Cascading
• Recirculate Capability
• LIFO of FIFO Capability
• 100% Tested for Quiescent Current at 20V
• 5V, 10V and 15V Parametric Ratings
• Maximum Input Current of 1µA at 18V Over Full Pack-
age Temperature Range; 100nA at 18V and +25oC
• Noise Margin (Over Full Package/Temperature Range)
- 1V at VDD = 5V
Data is shifted one stage left or one stage right depending on
the state of the LEFT/RIGHT CONTROL, synchronously with
the positive CLOCK edge. Data clocked into the first or 32nd
register states is available at the SHIFT LEFT or SHIFT
RIGHT OUTPUT respectively, on the next negative CLOCK
transition (see Data Transfer Table). No shifting occurs on the
positive CLOCK edge if the CLOCK INHIBIT line is at a high
level. With the RECIRCULATE CONTROL low, data in the
32nd stage is shifted into the first stage when the LEFT/
RIGHT CONTROL is low and from the first stage to the 32nd
stage when the LEFT/RIGHT CONTROL is low, and from the
first state to the 32nd stage when the LEFT/RIGHT control is
high. The CD40100BMS is supplied in these 16-lead outline
packages:
- 2V at VDD = 10V
- 2.5V at VDD = 15V
• Standardized, Symmetrical Output Characteristics
• Meets All Requirements of JEDEC Tentative Standard
No. 13B, “Standard Specifications for Description of
‘B’ Series CMOS Devices”
Applications
• Serial Shift Registers
• Time Delay Circuits
Braze Seal DIP
Frit Seal DIP
Ceramic Flatpack
H4T
H2R
H6W
• Expandable N-Bit Data Storage Stack (LIFO Operation)
Functional Diagram
Pinout
CD40100BMS
TOP VIEW
LEFT/RIGHT
CONTROL
NC
CLOCK INHIBIT
CLOCK
1
2
3
4
5
6
7
8
16 VDD
15 NC
14 NC
13
SHIFT RIGHT
11
SHIFT RIGHT
12
IN
OUT
OUT
CLOCK
4
LEFT/RIGHT
CONTROL
SHIFT LEFT OUT
NC
13
12 SHIFT RIGHT OUT
11 SHIFT RIGHT IN
10 NC
CLOCK INHIBIT
2
SHIFT LEFT
4
SHIFT LEFT IN
NC
SHIFT LEFT
6
IN
VSS = 8
VDD = 16
RECIRCULATE
CONTROL
9
VSS
9
NC = 1, 5, 7, 10, 14, 15
RECIRCULATE
CONTROL
NC = NO CONNECTION
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
File Number 3349
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7-1277