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74LS90 |
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| Part Number | 74LS90 |
| Manufacturer | ETC |
| Description | — The ’90 is a 4-stage ripple counter containing a high speed flip-flop acting as a divide-by-two and three flip-flops connected as a divideby-five counter. It can be connected to operate with a conve... |
| Features |
NC = Pins 4,13
INPUT LOADING/FAN-OUT: See Section 3 for U.L. defintions
PIN NAMES
DESCRIPTION
CPo CPi MRi, MR2 MSi , MS2 Qo
+2 Section Clock Input (Active Falling Edge) -H5 Section Clock Input (Active Falling Edge) Asynchronous Master Reset Inputs (Active HIGH) Asynchronous Master Set (Preset 9) Inputs (Active HIGH) -j-2 Section Output*
-^-5 Section Outputs
*The Qo output is guaranteed to drive the full rated fan-out plus the C P i input.
54/74 (U.L.) HIGH/LOW
2.0/2.0 3.0/3.0 1.0/1.0
1.0/1.0
20/10
20/10
54/74LS (U.L.) HIGH/LOW 0.125/1.5
0.250/2.0
0.5/0.25
0.5/0.25
10/5.0 (2.5)
10/5.0 ... |
| Document |
 74LS90 Data Sheet
PDF 302.31KB |
Similar Datasheet
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|---|---|---|---|---|
| 1 | 74LS90 |
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| 2 | 74LS90 |
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Desde 2024. D4U Semiconductor.
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