74HCT390D,653

Counter Dividers Overview

The Nexperia 74HCT390D,653 is a dual 4-bit decade ripple counter housed in a 16-lead SO plastic small outline package (SOT109-1). It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device contains two divide-by-2 sections and two divide-by-5 sections with separate clock inputs. It features TTL-compatible input levels, asynchronous master reset inputs, and clamp diodes on all inputs.

Counter Dividers Feature Summary

• Dual decade counters configured as two divide-by-2 and two divide-by-5 sections
• TTL logic level compatibility for direct interfacing
• Asynchronous master reset functionality to clear outputs
• Input clamp diodes enabling interface to voltages exceeding VCC

Counter Dividers Applications

• BCD decade counting configurations
• Bi-quinary decade counting applications
• Frequency division circuits
• Ripple counter designs

Counter Dividers Procurement Notes

Verify the specific ordering suffix

Counter Dividers Selection Notes

Select this component when TTL-level inputs are required for decade counting applications. Ensure the design accommodates the 4.5 V to 5.5 V supply voltage range. Verify that the 16-lead SO package dimensions fit the PCB layout constraints. Confirm that the operating temperature range meets the environmental requirements of the target application.

Counter Dividers Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices manufactured by Nexperia. It is functionally compatible with standard 74LS logic families regarding input thresholds but offers improved speed and lower power consumption characteristics typical of modern CMOS technology. The 'D' designation indicates the SO16 surface-mount package variant.

Counter Dividers Replacement Considerations

Check for equivalent parts from other manufacturers such as NXP Semiconductors or STMicroelectronics. Verify pinout compatibility and electrical specifications before substitution.