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CD40102BMS Datasheet(PDF) 1 Page - Intersil Corporation

No. de pieza CD40102BMS
Descripción Electrónicos  CMOS 8-Stage Presettable Synchronous Down Counters
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Fabricante Electrónico  INTERSIL [Intersil Corporation]
Página de inicio  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CD40102BMS Datasheet(HTML) 1 Page - Intersil Corporation

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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
CD40102BMS
CD40103BMS
CMOS 8-Stage Presettable
Synchronous Down Counters
Description
CD40102BMS and CD40103BMS consist of an 8-stage syn-
chronous down counter with a single output which is active
when the internal count is zero. The CD40102BMS is config-
ured as two cascaded 4-bit BCD counters, and the
CD40103BMS contains a single 8-bit binary counter. Each
type has control inputs for enabling or disabling the clock, for
clearing the counter to its maximum count, and for presetting
the counter either synchronously or asynchronously. All con-
trol inputs and the CARRY-OUT/ZERO-DETECT output are
active-low logic.
In normal operation, the counter is decremented by one
count on each positive transition of the CLOCK. Counting is
inhibited when the CARRY-IN/COUNTER ENABLE (CI/CE)
inputs is high. The CARRY-OUT/ZERO-DETECT (CO/ZD)
output goes low when the count reaches zero if the CI/CE
input is low, and remains low for one full clock period.
When the SYNCHRONOUS PRESET-ENABLE (SPE) input
is low, data at the JAM input is clocked into the counter on
the next positive clock transition regardless of the state of
the CI/CE input. When the ASYNCHRONOUS PRESET-
ENABLE (APE) input is low, data at the JAM inputs is asyn-
chronously forced into the counter regardless of the state of
the SPE, CI/CE, or CLOCK inputs. JAM inputs J0-J7 repre-
sent two 4-bit BCD words for the CD40102BMS and a single
8-bit binary word for the CD40103BMS.
When the CLEAR (CLR) input is low, the counter is asyn-
chronously cleared to its maximum count (9910 for the
CD40102BMS and 25510 for the CD40103BMS) regardless
of the state of any other input. The precedence relationship
between control inputs is indicated in the truth table.
If all control inputs except CI/CE are high at the time of zero
count, the counters will jump to the maximum count, giving a
counting sequence of 100 or 256 clock pulses long.
This causes the CO/ZD output to go low to enable the clock
on each succeeding clock pulse.
The CD40102BMS and CD40103BMS may be cascaded
using the CI/CE input and the CO/ZD output, in either a syn-
chronous or ripple mode as shown in Figures 16 and 17.
The CD40102MS and CD40103BMS are supplied in these
16-lead outline packages:
Braze Seal DIP
*H4W
†H4X
Frit Seal DIP
*H1L
†H1F
Ceramic Flatpack
H6W
*CD40102B Only
†CD40130B Only
Features
• High Voltage Type (20V Rating)
• CD40102BMS: 2-Decade BCD Type
• CD40103BMS: 8-Bit Binary Type
• Synchronous or Asynchronous Preset
• Medium Speed Operation
- fCL = 3.6MHz (Typ) at 10V
• Cascadable
• 100% Tested for Quiescent Current at 20V
• Maximum Input Current of 1
µA at 18V Over Full Pack-
age Temperature Range; 100nA at 18V and +25oC
• Noise Margin (Over Full Package/Temperature Range)
- 1V at VDD = 5V
- 2V at VDD = 10V
- 2.5V at VDD = 15V
• 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”
Applications
• Divide-By- “N” Counters
• Programmable Times
• Interrupt Timers
• Cycle/Program Counter
Pinout
CD40102BMS, CD40130BMS
TOP VIEW
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
CLOCK
CLEAR
CARRY IN/
J0
J1
J2
VSS
J3
VDD
CARRY OUT/
J7
J6
J5
J4
ASYNCHRONOUS
SYNCHRONOUS
COUNTER ENABLE
PRESET ENABLE
ZERO DETECT
PRESET ENABLE
File Number
3351
December 1992


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