The 74LS90 is a Decade and Binary Counters.
| Package | SOIC |
|---|---|
| Mount Type | Surface Mount |
| Pins | 14 |
| Operating Voltage | 5 V |
| Max Voltage (typical range) | 5.25 V |
| Min Voltage (typical range) | 4.75 V |
| Logic Function | Counter |
| Clock Edge Trigger | Negative Edge |
| Part Number | 74LS90 Datasheet |
|---|---|
| Manufacturer | National Semiconductor |
| Overview |
Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binary counter for which the count cycle length is divi.
Y Y
Typical power dissipation 45 mW Count frequency 42 MHz
Connection Diagrams (Dual-In-Line Packages)
TL F 6381 * 1 Order Number DM74LS90M or DM74LS90N See NS Package Number M14A or N14A TL F 6381 * 2 Order Number DM74LS93M or DM74LS93N See NS Package Number M14A or N14A C1995 National Semic. |
| Part Number | 74LS90 Datasheet |
|---|---|
| Description | DECADE COUNTER |
| 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. a) HIGH CP0 CP1 CP1 MR1, MR2 MS1, MS2 Q0 Q1, Q2, Q3 Clock (Active LOW going edge) Input to ÷2 Section Clock (Active 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 Ou. |
| Part Number | 74LS90 Datasheet |
|---|---|
| Description | Decade and Binary Counters |
| Manufacturer | Fairchild Semiconductor |
| Overview | Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binary counter for which the count cycle length is divi. s Typical power dissipation 45 mW s Count frequency 42 MHz Ordering Code: Order Number DM74LS90M DM74LS90N Package Number M14A N14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide . |
| Part Number | 74LS90 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. |
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| Part Number | Manufacturer | Description |
|---|---|---|
| 74LS90 | Texas Instruments | DIVIDE-BY-TWELVE AND BINARY COUNTERS |