| Part Number | 54LS90 Datasheet |
|---|---|
| Manufacturer | Motorola Semiconductor |
| Overview | The LS90, LS92, and LS93 are 4-bit ripple type Decade, Divide-By-Twelve, and Binary Counters respectively. Each device consists of four master/slave flip-flops which are internally connected to provid. ctive LOW going edge) Input to ÷5 Section (LS90), ÷6 Section (LS92) Clock (Active LOW going edge) Input to ÷8 Section (LS93) Master Reset (Clear) Inputs Master Set (Preset-9, LS90) Inputs Output from ÷2 Section (Notes b & c) Outputs from ÷5 (LS90), ÷6 (LS92), ÷8 (LS93) Sections (Note b) 0.5 U.L. 1. |
54LS90 Datasheet and Specifications PDF
The 54LS90 is a DECADE COUNTER.
Key Specifications
| Package | CDIP |
|---|---|
| Mount Type | Through Hole |
| Pins | 14 |
| Operating Voltage | 5 V |
| Max Voltage (typical range) | 5.5 V |
| Min Voltage (typical range) | 4.5 V |
| Logic Function | Counter |
| Height | 5.08 mm |
| Part Number | 54LS90 Datasheet |
|---|---|
| Description | DECADE COUNTER |
| Manufacturer | Unknown Manufacturer |
| Overview | — 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. 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. |