# SN54HC393, SN74HC393 DUAL 4-BIT BINARY COUNTERS

## General Description

️· Dual 4-bit binary counters in a single package
️· Independent 4-bit counters with clear (CLR) and clock (CLK) inputs
️· Can implement N-bit binary counters
️· Divide-by-256 capability
️· Parallel outputs for timing signals

## Features

️· Wide operating voltage range: 2V to 6V
️· Low power consumption: 80µA max ICC
️· Typical tpd = 13ns
️· ±4mA Output Drive at 5V
️· Low Input Current of 1 µA Max
️· Direct Clear for Each 4-Bit Counter

## Absolute Maximum Ratings

️· Supply voltage range: -0.5V to 7V
️· Input clamp current: ±20mA
️· Output clamp current: ±20mA
️· Continuous output current: ±25mA
️· Continuous current through VCC or GND: ±50mA
️· Package thermal impedance varies by package type.
️· Storage temperature range: -65°C to 150°C

## Recommended Operating Conditions

️· VCC: 2V to 6V
️· Operating free-air temperature: -55°C to 125°C (SN54HC393) or -40°C to 85°C (SN74HC393)

## Electrical Characteristics

️· VOH (high-level output voltage): varies with VCC and load current
️· VOL (low-level output voltage): varies with VCC and load current
️· II (input current): ±100µA
️· ICC (supply current): varies with VCC and operating conditions

## Timing Requirements

️· Clock frequency: varies with VCC
️· Pulse duration (high and low): varies with VCC
️· Setup and hold times for CLR
️· Propagation delay times

## Package Options

️· PDIP – N (Tube of 25)
️· SOIC – D (Tube of 50, Reel of 2500, Reel of 250)
️· SOP – NS (Reel of 2000)
️· SSOP – DB (Reel of 2000)
️· TSSOP – PW (Tube of 90, Reel of 2000, Reel of 250)
️· CDIP – J (Tube of 25)
️· CFP – W (Tube of 150)
️· LCCC – FK (Tube of 55)