Allicdata Part #: | 296-3750-5-ND |
Manufacturer Part#: |
SN74LS93N |
Price: | $ 1.69 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC 4-BIT BINARY COUNTER 14-DIP |
More Detail: | Counter IC Binary Counter 1 Element 4 Bit Positive... |
DataSheet: | SN74LS93N Datasheet/PDF |
Quantity: | 6622 |
1 +: | $ 1.53720 |
10 +: | $ 1.38222 |
100 +: | $ 1.11107 |
500 +: | $ 0.91287 |
1000 +: | $ 0.75638 |
Series: | 74LS |
Packaging: | Tube |
Part Status: | Active |
Logic Type: | Binary Counter |
Direction: | Up |
Number of Elements: | 1 |
Number of Bits per Element: | 4 |
Reset: | Asynchronous |
Timing: | -- |
Count Rate: | 42MHz |
Trigger Type: | Positive Edge |
Voltage - Supply: | 4.75V ~ 5.25V |
Operating Temperature: | 0°C ~ 70°C |
Mounting Type: | Through Hole |
Package / Case: | 14-DIP (0.300", 7.62mm) |
Supplier Device Package: | 14-PDIP |
Base Part Number: | 74LS93 |
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The SN74LS93N logic chip is particularly suitable for use in binary counting applications, as well as for producing a controlled clock divider. It is a 4-bit counter/divider with carry lookahead architecture, making it relatively simple to use. The SN74LS93N chip is made up of four flip-flops, each of which can store a binary voltage, continuously changing according to the applied input waveforms. This allows it to operate both as a counter and a divider.
The SN74LS93N is designed to be compatible with logic-level TTL. Its operating voltage range is 3.0V to 5.5V, with outputs of traditional TTL logic operating at 4.7V or lower with 10 mA of source or sink current, or at 5.0V or higher with 6 mA of source or sink current.
The SN74LS93N has two inputs, CLOCK and RESET, which are used to control the counting sequence. The CLOCK signal is responsible for incrementing the counter when it rises. The RESET signal is used to reset the counter to zero. The SN74LS93N also has four outputs, Q1-Q4, which are the binary count output. Each output stage is staggered so that the next stage is activated after the previous one, creating a ripple counter.
The SN74LS93N has two modes of operation; Acknowledge and Asynchronous Reset. In the Acknowledge mode, the counter counts up in response to a high level signal at the CLOCK input when the RESET pin is held low. To reset the counter, the RESET must be raised before the CLOCK signal is applied. In the Asynchronous Reset mode, when the RESET signal is applied to a logic high, the counter is reset regardless of the CLOCK signal. The reset may be asynchronous if the reset pulse is wider than the clock pulse.
The SN74LS93N is a versatile chip and can be used as a divider by applying a delayed clock signal to the CLOCK input and a high-frequency signal to the reset input. Unlike the normal counting mode, the output pulse width is dependent on the ratio of the delayed clock pulse to the reset pulse width. For example, if a delayed clock pulse of 1 second and a reset pulse of 10 seconds is applied, the SN74LS93N will output a pulse every 10 seconds.
The SN74LS93N can also be used as a frequency divider. All that is needed to achieve this is to connect the CLOCK and RESET inputs together, removing the delay. As the clock signal is driven in, the output divider frequency is also driven in. The frequency can be increased or decreased as desired. The greatest advantage of this chip is its low-power consumption, making it ideal for battery-operated applications.
In summary, the SN74LS93N is a versatile logic chip that can be used for a variety of counting and dividing applications. Its low-power consumption makes it suitable for battery-operated applications, while its simple design makes it easy to integrate into any project. The chip is also compatible with standard TTL circuitry, making it easy to use with other logic circuits.
The specific data is subject to PDF, and the above content is for reference
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