Overview
The SN74HC393PWRG4, produced by Texas Instruments, is a dual 4-bit binary counter integrated circuit. This device contains eight flip-flops and additional gating to implement two independent 4-bit counters in a single package. Each counter has its own clock (CLK) and clear (CLR) inputs, allowing for flexible and independent counting operations. The SN74HC393 is part of the HC series, known for its wide operating voltage range and low power consumption, making it suitable for a variety of digital circuit applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| High-Level Input Voltage (VIH) | 1.5 (VCC=2V), 3.15 (VCC=4.5V), 4.2 (VCC=6V) | V | ||
| Low-Level Input Voltage (VIL) | 0.5 (VCC=2V), 1.35 (VCC=4.5V), 1.8 (VCC=6V) | V | ||
| Output Voltage (VOH) | 1.9 (VCC=2V), 4.4 (VCC=4.5V), 5.9 (VCC=6V) | V | ||
| Output Voltage (VOL) | 0.1 (VCC=2V, 4.5V, 6V) | V | ||
| Input Current (II) | ±0.1 nA (VCC=6V) | nA | ||
| Quiescent Current (ICC) | 8 μA (VCC=6V) | 80 μA | μA | |
| Clock Frequency (fclock) | 6 MHz (VCC=2V), 31 MHz (VCC=4.5V), 36 MHz (VCC=6V) | MHz | ||
| Pulse Duration (tw) | 80 ns (VCC=2V), 16 ns (VCC=4.5V), 14 ns (VCC=6V) | ns | ||
| Setup Time (tsu) | 25 ns (VCC=2V), 5 ns (VCC=4.5V, 6V) | ns | ||
| Propagation Delay (tpd) | 50 ns (VCC=2V), 15 ns (VCC=4.5V), 13 ns (VCC=6V) | ns |
Key Features
- Wide operating voltage range of 2V to 6V
- Outputs can drive up to 10 LSTTL loads
- Low power consumption: 80μA max ICC
- Typical propagation delay of 13ns
- ±4mA output drive at 5V
- Low input current of 1μA max
- Dual 4-bit binary counters with individual clocks and clear inputs
- Parallel outputs from each counter stage for system timing signals
- Significant reduction in counter package count by 50%
Applications
- Digital counters and timers in various electronic systems
- Frequency dividers and clock signal generators
- Sequential logic circuits and state machines
- Automotive and industrial control systems
- Consumer electronics requiring low power and high reliability
Q & A
- What is the operating voltage range of the SN74HC393?
The operating voltage range is from 2V to 6V.
- How many LSTTL loads can the outputs of the SN74HC393 drive?
The outputs can drive up to 10 LSTTL loads.
- What is the maximum quiescent current (ICC) of the SN74HC393?
The maximum quiescent current is 80μA.
- What is the typical propagation delay of the SN74HC393?
The typical propagation delay is 13ns.
- Does the SN74HC393 have individual clocks and clear inputs for each counter?
Yes, each 4-bit counter has its own clock and clear inputs.
- What is the maximum clock frequency for the SN74HC393 at 6V VCC?
The maximum clock frequency at 6V VCC is 36 MHz.
- What is the setup time for the clear input (CLR) of the SN74HC393?
The setup time for CLR is 5ns at VCC=4.5V and 6V.
- Can the SN74HC393 be used in automotive applications?
Yes, it can be used in automotive and industrial control systems due to its reliability and low power consumption.
- What are the package options available for the SN74HC393?
The SN74HC393 is available in various packages including SOIC, SSOP, TSSOP, PDIP, and others.
- Is the SN74HC393 RoHS compliant?
Yes, many of the package options for the SN74HC393 are RoHS compliant.
