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DM74LS193
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MFG:FAIRCHILD Package Cooled:SMD D/C:05+

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Part Number: DM74LS193

MFG: FAIRCHILD

Package Cooled: SMD

D/C: 05+

Description: The DM74LS193 circuit is a synchronous up/down 4-bit binary counter. Synchronous operation is provided by ...

DM74LS193 General Description

   The DM74LS193 circuit is a synchronous up/down 4-bit binary counter. Synchronous operation is provided by hav-ing all flip-flops clocked simultaneously, so that the outputs change together when so instructed by the steering logic.This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple-clock) counters.

The outputs of the four master-slave flip-flops are triggered by a LOW-to-HIGH level transition of either count (clock) input. The direction of counting is determined by which count input is pulsed while the other count input is held HIGH.

   The counter is fully programmable; that is, each output may be preset to either level by entering the desired data at the inputs while the load input is LOW. The output will change independently of the count pulses. This feature allows the counters to be used as modulo-N dividers by simply modi-fying the count length with the preset inputs.

A clear input has been provided which, when taken to aof the count and load inputs. The clear, count, and load inputs are buffered to lower the drive requirements of clock drivers, etc., required for long words.

   These counters were designed to be cascaded without the need for external circuitry. Both borrow and carry outputs are available to cascade both the up and down counting functions. The borrow output produces a pulse equal in width to the count down input when the counter underflows.

   Similarly, the carry output produces a pulse equal in width to the count down input when an overflow condition exists.

   The counters can then be easily cascaded by feeding the borrow and carry outputs to the count down and count up inputs respectively of the succeeding counter.
high level, forces all outputs to the low level; independent

DM74LS193 Maximum Ratings

Operating Free Air Temperature Range                    -0°C to +70°C
Supply Voltage                                                                             7V
Input Voltage                                                                               7V
Storage Temperature Range                                 -65°C to +125°C

DM74LS193 Features

Fully independent clear input
Synchronous operation
Cascading circuitry provided internally
Individual preset each flip-flop

DM74LS193 datasheet

DM74LS193
PDF/DataSheet Download

Datasheet: DM74LS193
File Size: 73460 KB
Manufacturer: Fairchild
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DM74LS193 Relative Products

DM74LS191
These DM74LS190 and DM74LS191 circuits are synchronous reversible updown coun-ters The LS191 is a 4-bit binary counter and the LS190 is aBCD counter ynchronous operation is provided by havingallDM74LS190 and DM74LS191 flip-flops clocked simultaneously so tha...
DM74LS190
TheseLS191 circuits are synchronous reversible updown coun-ters TheLS191 is a 4-bit binary counter and the LS190 is aBCD counter ynchronous operation is provided by havingall flip-flops clocked simultaneously so that the outputschange simultaneously when so ...
DM74LS19
The'LS192 is an updown BCD decade (8421) counter Separate Count Up and Count Down Clocks are used and in either counting mode the circuits operate synchronously The outputs of 'LS192 change state synchronous with the LOW-to- HIGH transitions on the clock inp...
DM74LS181
The DM74LS181 is a 4-bit Arithmetic Logic Unit (ALU) which can perform all the possible 16 logic operations on two variables and a variety of arithmetic operations
DM74LS175SJ_1137187
These DM74LS175SJ_1137187positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct clear input, and the quad (175) versions feature complementary outputs from each flip-flop.Information of DM74LS175SJ_113...
DM74LS175
These DM74LS175positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct clear input, and the quad (175) versions feature complementary outputs from each flip-flop. Information of DM74LS175 at the D inpu...

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