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| Part Number | SN74LS90N | SN74LS92N | SN74LS93N | SN74LS390N | SN74LS490N | SN74LS590N | SN74LS90D |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Rochester Electronics, LLC | Texas Instruments | onsemi |
| Product Status | Active | Active | Active | Active | Active | Active | Obsolete |
| Logic Type | Counter, Decade | Divide-by-12 | Binary Counter | Counter, Decade | - | Binary Counter | Counter, Decade |
| Direction | Up | Up | Up | Up | - | Up | Up |
| Number of Elements | 1 | 1 | 1 | 2 | - | 1 | 1 |
| Number of Bits per Element | 4 | 4 | 4 | 4 | - | 8 | 4 |
| Reset | Asynchronous | Synchronous | Asynchronous | Asynchronous | - | Asynchronous | Asynchronous |
| Timing | - | - | - | - | - | - | - |
| Count Rate | 42 MHz | 42 MHz | 42 MHz | 35 MHz | - | 35 MHz | 42 MHz |
| Trigger Type | Negative Edge | Positive Edge | Positive Edge | Negative Edge | - | Positive Edge | Negative Edge |
| Voltage - Supply | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V | - | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | - | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | - | Through Hole | Surface Mount |
| Package / Case | 14-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | - | 16-DIP (0.300", 7.62mm) | 14-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 14-PDIP | 14-PDIP | 14-PDIP | 16-PDIP | - | 16-PDIP | 14-SOIC |
