Key facts
- Brand
- Fairchild
- Model
- DM7490A
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-06-12
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National Semiconductor DM5490/DM7490A DM7493A Datasheet
This document provides technical specifications for the DM5490/DM7490A and DM7493A monolithic counters. These devices contain four master-slave flip-flops with additional gating to provide divide-by-two and divide-by-five or divide-by-eight count cycles. The DM7490A includes gated set-to-nine inputs for BCD nine's complement applications.
Read onlineFairchild DM7490A specifications
| Typical Power Dissipation (DM7490A) | 145 mW |
|---|---|
| Typical Power Dissipation (DM7493A) | 130 mW |
| Maximum Clock Frequency (Input A) | 32 MHz |
| Maximum Clock Frequency (Input B) | 16 MHz |
| Supply Voltage (Nominal) | 5 V |
| Operating Temperature Range (DM54) | -55°C to +125°C |
Source: National Semiconductor DM5490/DM7490A DM7493A Datasheet
All Fairchild DM7490A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the count cycle length for the DM7490A?
The count cycle length is divide-by-five for the 90A.
From: National Semiconductor DM5490/DM7490A DM7493A Datasheet
What is the count cycle length for the DM7493A?
The count cycle length is divide-by-eight for the 93A.
From: National Semiconductor DM5490/DM7490A DM7493A Datasheet
What is the count cycle length for the DM7490A?
The count cycle length is divide-by-five for the 90A.
From: National Semiconductor DM5490/DM7490A DM7493A Datasheet
What is the count cycle length for the DM7493A?
The count cycle length is divide-by-eight for the 93A.
From: National Semiconductor DM5490/DM7490A DM7493A Datasheet
How is the BCD count sequence achieved?
Output QA is connected to input B for BCD count.
What is the maximum supply voltage?
The absolute maximum supply voltage is 7V.