Overview
The SN74HC590A, produced by Texas Instruments, is an 8-bit binary counter with an 8-bit storage register. This integrated circuit is part of the HC series, known for its high-speed CMOS logic. It operates within a voltage range of 2 to 6 volts, making it versatile for various applications. The device features high-current 3-state parallel register outputs capable of driving up to 15 LSTTL loads, which is beneficial for systems requiring multiple output connections. It also boasts low power consumption, with a maximum ICC of 80 µA, and fast switching times, making it suitable for high-speed digital circuits.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V | |
| VIH High-Level Input Voltage | VCC = 2 V | 1.5 | V | ||
| VIH High-Level Input Voltage | VCC = 4.5 V | 3.15 | V | ||
| VIH High-Level Input Voltage | VCC = 6 V | 4.2 | V | ||
| VIL Low-Level Input Voltage | VCC = 2 V | 0.5 | V | ||
| VIL Low-Level Input Voltage | VCC = 4.5 V | 1.35 | V | ||
| VIL Low-Level Input Voltage | VCC = 6 V | 1.8 | V | ||
| ICC Power Consumption | VCC = 6 V, IO = 0 | 80 | µA | ||
| tPD Propagation Delay | CCLK↑ to RCO, VCC = 6 V | 15 | 26 | 33 | ns |
| fMAX Clock Frequency | VCC = 6 V | 24 | MHz |
Key Features
- 8-bit binary counter with an 8-bit storage register
- High-current 3-state parallel register outputs capable of driving up to 15 LSTTL loads
- Low power consumption: ICC max of 80 µA at VCC = 6 V
- Fast switching times: typical propagation delay of 14 ns at VCC = 5 V
- Operating voltage range: 2 V to 6 V
- Direct clear input for the counter
- Low input current: max of 1 µA
- High output drive: ±6 mA at VCC = 5 V
Applications
The SN74HC590A is versatile and can be used in a variety of applications, including:
- Digital counters and timers
- Sequential logic circuits
- Data storage and retrieval systems
- Industrial control systems
- Automated systems requiring high-speed digital logic
Q & A
- What is the operating voltage range of the SN74HC590A?
The operating voltage range is from 2 V to 6 V.
- How many LSTTL loads can the outputs of the SN74HC590A drive?
The outputs can drive up to 15 LSTTL loads.
- What is the maximum power consumption of the SN74HC590A?
The maximum ICC is 80 µA at VCC = 6 V.
- What is the typical propagation delay of the SN74HC590A?
The typical propagation delay is 14 ns at VCC = 5 V.
- Does the SN74HC590A have a direct clear input for the counter?
Yes, it has a direct clear input for the counter.
- What is the maximum input current of the SN74HC590A?
The maximum input current is 1 µA.
- What is the output drive capability of the SN74HC590A at VCC = 5 V?
The output drive capability is ±6 mA at VCC = 5 V.
- What are some common applications of the SN74HC590A?
Common applications include digital counters, sequential logic circuits, data storage systems, and industrial control systems.
- What is the maximum clock frequency of the SN74HC590A?
The maximum clock frequency is 24 MHz at VCC = 6 V.
- How should unused inputs of the SN74HC590A be handled?
Unused inputs must be held at VCC or GND to ensure proper device operation.
