The 74LS90 is a 4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two section and either a divide-by-five (LS90) section which are triggered by a HIGH-to-LOW transition on the clock inputs. Each section can be used separately or tied together (Q to CP) to form BCD, bi-quinary, modulo-12, or modulo-16 counters. All of the counters have a 2-input gated Master Reset (Clear), and the LS90 also has a 2-input gated Master Set. The following are the features:-
• Low Power Consumption :Typically 45 mW
• High Count Rates :Typically 42 MHz
• Choice of Counting Modes : BCD, Bi-Quinary, Divide-by-Twelve, Binary
• Input Clamp Diodes Limit High Speed Termination Effects
Specification:-
| Symbol | Parameter | Min | Type | Max | Units |
| VCC | Supply Voltage | 4.5 | 5 | 5.5 | V |
| TA | Operating Ambient Temperature Range | -55 | 25 | 125 | °C |
| IOH | Output Current — High | –0.4 | m A | ||
| IOL | Output Current — Low | 8 | m A |
Related Document:-
| Brand/Manufacturer | Generic |
| Country Of Origin | China |
| Packer / Importer Address | Constflick Technologies Limited, Building No 13 and 14, 3rd Floor, 2nd Main, Siddaiah Road, Bangalore, Karnataka - 560027 India. |
| MRP | Rs. 93.22 (Inclusive of all Taxes) |
* Product Images are shown for illustrative purposes only and may differ from actual product.
74LS90 IC – (SMD Package) - Decade Counter IC (7490 IC)
- Product Code: EC-2527
- Availability: 1287
-
Rs.79.00
- (Excluding 18% GST)