Part Details for DM74LS90N by Texas Instruments
Results Overview of DM74LS90N by Texas Instruments
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DM74LS90N Information
DM74LS90N by Texas Instruments is a Counter.
Counters are under the broader part category of Logic Components.
Digital logic governs the behavior of signals in electronic circuits, enabling complex decisions based on simple binary inputs (yes/no). Logic components perform operations from these signals. Read more about Logic Components on our Logic part category page.
US Tariff Estimator: DM74LS90N by Texas Instruments
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DM74LS90N Part Data Attributes
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DM74LS90N
Texas Instruments
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Datasheet
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DM74LS90N
Texas Instruments
Decade Counter, LS Series, Asynchronous, Negative Edge Triggered, 3-Bit, Up Direction, TTL, PDIP14
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| Rohs Code | No | |
| Part Life Cycle Code | Transferred | |
| Package Description | Dip, Dip14,.3 | |
| Reach Compliance Code | Unknown | |
| HTS Code | 8542.39.00.60 | |
| Additional Feature | Divide By 2 And Divide By 5 Functions | |
| Count Direction | Up | |
| Family | Ls | |
| JESD-30 Code | R-PDIP-T14 | |
| JESD-609 Code | e0 | |
| Length | 19.18 Mm | |
| Load Capacitance (CL) | 15 Pf | |
| Load/Preset Input | Yes | |
| Logic IC Type | Decade Counter | |
| Max Frequency@Nom-Sup | 20000000 Hz | |
| Max I(ol) | 0.008 A | |
| Mode of Operation | Asynchronous | |
| Number of Bits | 3 | |
| Number of Functions | 2 | |
| Number of Terminals | 14 | |
| Operating Temperature-Max | 70 °C | |
| Operating Temperature-Min | ||
| Package Body Material | Plastic/Epoxy | |
| Package Code | DIP | |
| Package Equivalence Code | DIP14,.3 | |
| Package Shape | Rectangular | |
| Package Style | In-Line | |
| Power Supply Current-Max (ICC) | 15 Ma | |
| Propagation Delay (tpd) | 35 Ns | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 5.08 Mm | |
| Supply Voltage-Max (Vsup) | 5.25 V | |
| Supply Voltage-Min (Vsup) | 4.75 V | |
| Supply Voltage-Nom (Vsup) | 5 V | |
| Surface Mount | No | |
| Technology | Ttl | |
| Temperature Grade | Commercial | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Terminal Form | Through-Hole | |
| Terminal Pitch | 2.54 Mm | |
| Terminal Position | Dual | |
| Trigger Type | Negative Edge | |
| Width | 7.62 Mm | |
| fmax-Min | 16 Mhz |
DM74LS90N Frequently Asked Questions (FAQ)
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The maximum clock frequency of the DM74LS90N is typically around 20-25 MHz, but it can vary depending on the specific application and operating conditions. It's recommended to check the device's timing specifications and perform thorough testing to ensure reliable operation at higher frequencies.
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To ensure proper power sequencing, it's recommended to power up the VCC pin before applying any input signals, and to power down the VCC pin after removing all input signals. Additionally, it's a good practice to add decoupling capacitors close to the VCC pin to filter out noise and reduce power supply ripple.
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The recommended operating temperature range for the DM74LS90N is 0°C to 70°C. However, the device can operate up to 85°C with reduced performance and reliability. It's essential to ensure proper thermal management and heat dissipation to prevent overheating and ensure reliable operation.
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The DM74LS90N is a 5V device, but it can be used in 3.3V systems with some limitations. The device's input voltage threshold is around 2.4V, so it may not function correctly at 3.3V. However, it's possible to use level translators or voltage dividers to interface the DM74LS90N with 3.3V systems. Consult the datasheet and application notes for more information.
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To troubleshoot issues with the DM74LS90N, start by verifying the power supply voltage and ensuring that it's within the recommended range. Check the input signals and clock frequencies to ensure they are within the specified limits. Use a logic analyzer or oscilloscope to monitor the device's output and clock signals. Consult the datasheet and application notes for troubleshooting guides and common pitfalls to avoid.