Synchronous 4-Bit Up/Down Binary Counters With Dual Clock And Clear

These monolithic circuits are synchronous reversible (up/down) Counters SN74LS193 having a complexity of 55 equivalent Gates The '192 and 'LS192 circuits are BCD Counters and the '193 and 'LS193 are 4-bit binary Counters Synchronous operation is provided by having all Flip-Flops clocked simultaneously so that the outputs change coincidently with each other when so instructed by the steering Logic This mode of operation eliminates the output counting spikes which are 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 high.
All four Counters are fully programmable; that is, each output may be preset to either level by entering the desired data at the data inputs while the load input is low. The output will change to agree with the data inputs independently of the count pulses. This feature allows the Counters to be used as modulo-N dividers by simply modifying the count length with the preset inputs.
A clear input has been provided which forces all outputs to the low level when a high level is applied. The clear function is independent of the count and load inputs. The clear, count, and load inputs are buffered to lower the drive requirements. This reduces the number of Clock Drivers etc., required for long words.
These Counters are 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-up 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
By Texas Instruments
Part Manufacturer Description Datasheet Samples
SN74LS193NE4 Texas Instruments Synchronous 4-Bit Up/Down Binary Counters With Dual Clock and Clear 16-PDIP 0 to 70
SN74LS193N3 Texas Instruments Synchronous 4-Bit Up/Down Binary Counters With Dual Clock and Clear 16-PDIP 0 to 70
SN74LS193DR Texas Instruments Synchronous 4-Bit Up/Down Binary Counters With Dual Clock and Clear 16-SOIC 0 to 70
SN74LS193DG4 Texas Instruments LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16, GREEN, PLASTIC, MS-012AC, SOIC-16
SN74LS193NSRG4 Texas Instruments LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16, GREEN, PLASTIC, SOP-16
SN74LS193DRE4 Texas Instruments LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16, GREEN, PLASTIC, SOIC-16
SN74LS193DRG4 Texas Instruments LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16, GREEN, PLASTIC, MS-012AC, SOIC-16
SN74LS193N Texas Instruments Synchronous 4-Bit Up/Down Binary Counters With Dual Clock and Clear 16-PDIP 0 to 70
SN74LS193J Texas Instruments Synchronous 4-Bit Up/Down Binary Counters With Dual Clock and Clear 16-CDIP 0 to 70
SN74LS193DE4 Texas Instruments LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16, GREEN, PLASTIC, SOIC-16
SN74LS193 's PackagesSN74LS193 's pdf datasheet
SN74LS193D SOIC
SN74LS193DE4 SOIC
SN74LS193DG4 SOIC
SN74LS193DR SOIC
SN74LS193DRE4 SOIC
SN74LS193DRG4 SOIC
SN74LS193J DIP
SN74LS193N PDIP
SN74LS193N3 PDIP
SN74LS193NE4 PDIP
SN74LS193NSR SO
SN74LS193NSRE4 SO
SN74LS193NSRG4 SO




SN74LS193 Pinout, Pinouts
SN74LS193 pinout,Pin out
This is one package pinout of SN74LS193,If you need more pinouts please download SN74LS193's pdf datasheet.

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