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Description
Presettable Bcd/decade 4-bit Binary Up/down Counter
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The SN54/74LS190 is a synchronous UP/DOWN BCD Decade (8421) Counter and the SN54/74LS191 is a synchronous UP/DOWN Modulo-16 Binary Counter. State changes of the counters are synchronous with the LOW-to-HIGH transition of the Clock Pulse input.
An asynchronous Parallel Load (PL) input overrides counting and loads the data present on the Pn inputs into the flip-flops, which makes it possible to use the circuits as programmable counters.A Count Enable (CE) input serves as the carry/ borrow input in multi-stage counters.An Up/Down Count Control (U/D) input determines whether a circuit counts up or down. A Terminal Count (TC) output and a Ripple Clock (RC) output provide overflow/underflow indication and make possible a variety of methods for generating carry/borrow signals in multistage counter applications.
● Low Power.......90 mw Typical Dissipation
● High Speed.......25 MHz Typical Count Frequency
● Synchronous Counting
● Asynchronous Parallel Load
● Individual Preset Inputs
● Count Enable and Up/Down Control Inputs
● Cascadable
● Input Clamp Diodes Limit High Speed Termination Effects
Preview of the first 3 pages of the data sheet
Some Part number from the same manufacture
Some Part number from the same manufacture Motorola Semiconductor Products |
SN74LS191D Presettable Bcd/decade 4-bit Binary Up/down Counter |
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204 buyer reviews from Australia
Megan Clark
Length of registration:7 years
The SN74LS190N is a high-performance integrated circuit from Texas Instruments. It is a 4-bit up/down counter with synchronous clear and can operate at speeds up to 10 MHz. It has a wide operating voltage range of 2V to 6V and can handle input levels from 0V to VCC. It is ideal for applications such as frequency division, time division, and pulse counting.
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03/17/2023
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SN74LS190N
SN74LS190N has several brands around the world that may have alternate names for SN74LS190N due to regional differences or acquisition. SN74LS190N may also be known as the following names:
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