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NTE74LS90

NTE
Part Number NTE74LS90
Manufacturer NTE
Description Decade Counter
Published Dec 10, 2020
Detailed Description NTE74LS90 Integrated Circuit TTL− Decade Counter 14−Lead DIP Description: The NTE74LS90 is a monolithic counter in a 14...
Datasheet PDF File NTE74LS90 PDF File

NTE74LS90
NTE74LS90

Overview
NTE74LS90 Integrated Circuit TTL− Decade Counter 14−Lead DIP Description: The NTE74LS90 is a monolithic counter in a 14−Lead DIP type package that contains four master− slave flip−flops and additional gating to provide a divide−by−two counter and a three−stage binary counter for which the count cycle length is divide−by−five.
The counter has a gated zero reset and also has gated set−to−nine inputs for use in BDC nine’s complement applications.
To use the maximum count length (decade or four−bit binary), the B input is connected to the QA output.
The input count pulses are applied to input A and the outputs are as described in the appropriate Function Table.
A symmetrical divide−by−ten count can be obtained from the counter by connecting the QD output to the A input and applying the input count to the B input which gives a divide−by−ten square wave at output QA.
Features: D Typical Power Dissipation: 145mW Absolute Maximum Ratings: (TA = 0° to +70°C unless otherwise specified) Supply Voltage (Note 1) .
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7V Input Voltage R Inputs .
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7V A and B Inputs .
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5.
5V Operating Free−Air Temperature Range .
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0° to +70°C Storage Temperature Range .
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−65° to +150°C Note 1.
Voltage values are with respect to network ground terminal.
Recommended Operating Conditions: Parameter Supply Voltage HIGH Level Output Current LOW Level Output Current Count Frequency Pulse Width Reset Inactive−State Setup Time Operating Free Air Temperature Symbol Min...


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