DM74S163N Fairchild Semiconductor, DM74S163N Datasheet

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DM74S163N

Manufacturer Part Number
DM74S163N
Description
IC COUNTER BINARY 4BIT 16-DIP
Manufacturer
Fairchild Semiconductor
Series
74Sr
Datasheet

Specifications of DM74S163N

Logic Type
Binary Counter
Number Of Elements
1
Number Of Bits Per Element
4
Timing
Synchronous
Count Rate
40MHz
Trigger Type
Positive Edge
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Direction
-
Reset
-
Other names
74S163
74S163N

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Price
Part Number:
DM74S163N
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Part Number:
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Quantity:
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© 2000 Fairchild Semiconductor Corporation
DM74S161N
DM74S163N
DM74S161 • DM74S163
Synchronous 4-Bit Binary Counters
General Description
These synchronous, presettable counters feature an inter-
nal carry look-ahead for application in high-speed counting
designs. They are 4-bit binary counters. The carry output is
decoded by means of a NOR gate, thus preventing spikes
during the normal counting mode of operation. Synchro-
nous operation is provided by having all flip-flops clocked
simultaneously so that the outputs change coincident with
each other when so instructed by the count enable inputs
and internal gating. This mode of operation eliminates the
output counting spikes which are normally associated with
asynchronous (ripple clock) counters. A buffered clock
input triggers the four flip-flops on the rising (positive-
going) edge of the clock input waveform.
These counters are fully programmable; that is, the outputs
may be preset to either level. As presetting is synchronous,
setting up a LOW level at the load input disables the
counter and causes the outputs to agree with the setup
data after the next clock pulse regardless of the levels of
the enable input.
Ordering Code:
Connection Diagram
Order Number
Package Number
N16E
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS006471
The carry look-ahead circuitry provides for cascading
counters for n-bit synchronous applications without addi-
tional gating. Instrumental in accomplishing this function
are two count-enable inputs and a ripple carry output. Both
count-enable inputs (P and T) must be HIGH to count, and
input T is fed forward to enable the ripple carry output. The
ripple carry output thus enabled will produce a HIGH-level
output pulse with a duration approximately equal to the
HIGH-level portion of the Q
flow ripple carry pulse can be used to enable successive
cascaded stages.
Features
Synchronously programmable
Internal look-ahead for fast counting
Carry output for n-bit cascading
Synchronous counting
Load control line
Diode-clamped inputs
Package Description
A
output. This HIGH-level over-
August 1986
Revised April 2000
www.fairchildsemi.com

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DM74S163N Summary of contents

Page 1

... Ordering Code: Order Number Package Number DM74S161N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide DM74S163N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Connection Diagram © 2000 Fairchild Semiconductor Corporation The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without addi- tional gating ...

Page 2

Logic Diagram www.fairchildsemi.com DM74S161 • DM74S163 2 ...

Page 3

Timing Diagram Sequence: 1. Clear outputs to zero 2. Preset to binary twelve 3. Count to thirteen, fourteen, fifteen, zero, one and two 4. Inhibit 3 www.fairchildsemi.com ...

Page 4

Parameter Measurement Information Note A:The input pulses are supplied by generators having the following characteristics: PRR 1 MHz, duty cycle 50 For DM74S161/163, t OUT Note B: Outputs Q and carry are tested for ...

Page 5

Absolute Maximum Ratings Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V HIGH Level Input Voltage IH V LOW Level Input Voltage IL I HIGH Level Output ...

Page 6

Electrical Characteristics over recommended operating free air temperature (unless otherwise noted) Symbol Parameter V Input Clamp Voltage HIGH Level V OH Output Voltage V V LOW Level V OL Output Voltage V I Input Current @ Max ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at ...

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