HEF4059BT,652

Counter Dividers Overview

The HEF4059BT,652 is a programmable divide-by-n counter in a 24-lead SO plastic package. It divides input frequency by any number n from 3 to 15,999 using 16 jam inputs and three mode select inputs. The output provides a one clock-cycle wide pulse with TTL drive capability. Schmitt-trigger action on the clock input ensures tolerance for slow rise/fall times. Maximum clock pulse frequency reaches 20 MHz at 15 V supply.

Counter Dividers Feature Summary

• Programmable division ratio via 16 BCD jam inputs and mode selection logic
• Single output with TTL drive capability producing one-clock-cycle pulses
• Schmitt-trigger clock input for enhanced noise immunity and slow signal tolerance
• Master preset and latch enable modes for controlled initialization and output holding

Counter Dividers Applications

• Frequency synthesizer channel separation
• Programmable timer circuits
• Digital clock dividers
• Count-down sequence generators

Counter Dividers Procurement Notes

Verify the specific ordering suffix '652' against manufacturer documentation to confirm package type and tape/reel specifications. Ensure compatibility with LOCMOS family power supplies and voltage levels. Confirm that the 24-lead SO plastic package meets your board layout requirements. Check for any specific handling instructions related to static sensitivity inherent to CMOS technology.

Counter Dividers Selection Notes

Select this component when a fixed division ratio is insufficient and programmability between 3 and 15,999 is required. The TTL-compatible output simplifies interfacing with standard logic families. Consider the maximum operating frequency of 20 MHz at 15 V when designing high-speed applications. The availability of master preset modes allows for precise synchronization control in complex digital systems.

Counter Dividers Part Context

This device belongs to the Philips Semiconductors (now NXP) HE4000B Logic Family, utilizing LOCMOS technology. It is an LSI programmable counter designed for versatile frequency division tasks. The HEF4059BT variant specifically denotes the 24-lead Small Outline (SO) plastic package, distinguishing it from DIL or ceramic variants within the same functional family.

Counter Dividers Replacement Considerations

Direct substitutes include other HEF4059B variants such as HEF4059BP(N) for DIL plastic or HEF4059BD(F) for DIL ceramic packages, provided pinout and electrical characteristics remain identical. Verify that any replacement maintains the same LOCMOS process technology and voltage ranges.