Overview
The Texas Instruments SN74HC590AN is an integrated circuit that combines an 8-bit binary counter with an 8-bit storage register. This device is part of the HC (High-Speed CMOS) logic family and is designed for a wide range of digital applications. It operates within a voltage range of 2 V to 6 V, making it versatile for various system designs. The counter and storage register have separate clocks, allowing for flexible operation and easy cascading for larger count chains.
Key Specifications
| Parameter | Min | Nom | Max |
|---|---|---|---|
| VCC Supply Voltage | 2 V | 5 V | 6 V |
| Operating Temperature Range | -40°C | 85°C | |
| Input Transition Time (rise and fall) | 400 ns (at 6 V) | 500 ns (at 4.5 V) | |
| Clock Frequency | 13 MHz (at 4.5 V) | 24 MHz (at 6 V) | |
| Propagation Delay (tpd) | 14 ns (typical) | 38 ns (max) | |
| Output Drive (IOL/IOH) | ±6 mA (at 5 V) | ||
| Low Power Consumption (ICC) | 80 µA (max) | ||
| Input Current | 1 µA (max) |
Key Features
- 8-bit binary counter with an 8-bit storage register
- Separate clocks for the binary counter and storage register
- Direct clear (CCLR) and count-enable (CCKEN) inputs for the counter
- Ripple-carry output (RCO) for cascading
- High-current 3-state parallel register outputs can drive up to 15 LSTTL loads
- Low power consumption, 80-µA max ICC
- Typical propagation delay of 14 ns
- ±6-mA output drive at 5 V
- Low input current of 1 µA max
Applications
The SN74HC590AN is suitable for a variety of digital applications, including:
- Counting and timing circuits
- Sequential logic circuits
- Data storage and retrieval systems
- Cascaded counter chains for larger counting applications
- General-purpose digital logic circuits requiring counters and storage registers
Q & A
- What is the voltage range for the SN74HC590AN?
The SN74HC590AN operates within a voltage range of 2 V to 6 V.
- What type of outputs does the SN74HC590AN have?
The device has high-current 3-state parallel register outputs.
- How many LSTTL loads can the outputs drive?
The outputs can drive up to 15 LSTTL loads.
- What is the typical propagation delay of the SN74HC590AN?
The typical propagation delay is 14 ns.
- What is the maximum output drive at 5 V?
The maximum output drive at 5 V is ±6 mA.
- What is the maximum input current?
The maximum input current is 1 µA.
- How does the counter and storage register clocking work?
The counter and storage register have separate clocks (CCLK and RCLK), and both are positive-edge triggered.
- How can the SN74HC590AN be cascaded for larger count chains?
Cascading can be accomplished by connecting the ripple-carry output (RCO) of each stage to the counter clock (CCLK) input of the following stage.
- What is the operating temperature range of the SN74HC590AN?
The operating temperature range is -40°C to 85°C.
- Is the SN74HC590AN RoHS compliant?
Yes, the SN74HC590AN is RoHS compliant.
