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Home  Logic - Counters, Dividers  74LS393PC Datasheets | Logic - Counters, Dividers Counter IC Element Bit

Jan 5 2021

74LS393PC Datasheets | Logic - Counters, Dividers Counter IC Element Bit

Product Overview

Image:
74LS393PC
Manufacturer Part#: 74LS393PC
Product Category: Logic - Counters, Dividers
Stock: No
Manufacturer: National Semiconductor
Description: Counter IC Element Bit
Datasheet: N/A
Package: N/A
Minimum: 1
Lead Time: 1 Weeks
Quantity: On Order
Send RFQ: Inquiry

Reference Price

Qty Unit Price Ext. Price
1145: 0.21840 250.06800

CAD Models

Product Attributes

Descriptions

BINARY COUNTER, LS SERIES:Digi-Key Marketplace

FEATURES

DUAL DECADE COUNTER;

DUAL 4-STAGE BINARY COUNTER

The SN54/74LS390 and SN54/74LS393 each contain a pair of high-speed 4-stage ripple counters. Each half of the LS390 is partitioned into a divide-by-two section and a divide-by five section, with a separate clock input for each section. The two sections can be connected to count in the 8.4.2.1 BCD code or they can count in a biquinary sequence to provide a square wave (50% duty cycle) at the final output.

Each half of the LS393 operates as a Modulo-16 binary divider, with the last three stages triggered in a ripple fashion. In both the LS390 and the LS393, the flip-flops are triggered by a HIGH-to-LOW transition of their CP inputs. Each half of each circuit type has a Master Reset input which responds to a HIGH signal by forcing all four outputs to the LOW state.

• Dual Versions of LS290 and LS293

• LS390 has Separate Clocks Allowing ÷2, ÷2.5, ÷5
• Individual Asynchronous Clear for Each Counter
• Typical Max Count Frequency of 50 MHz
• Input Clamp Diodes Minimize High Speed Termination Effects

Environmental & Export Classifications

Description Value
RoHS Status: RoHS non-compliant
Moisture Sensitivity Level (MSL): 3 (168 Hours)
REACH Status: Vendor Undefined

Distributors

Image PartNo Manufacturer Descriptions Stock Step Price
74LS393PC 74LS393PC National Semiconductor Counter IC Element Bit On Order

1,145:$$0.21840

74LS393PC 74LS393PC Texas Instruments BINARY COUNTER, LS SERIES:Digi-Key Marketplace
On Order

N/A

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  • Product Attributes
  • Descriptions
  • Features
  • CAD Models

BINARY COUNTER, LS SERIES:Digi-Key Marketplace

FEATURES

DUAL DECADE COUNTER;

DUAL 4-STAGE BINARY COUNTER

The SN54/74LS390 and SN54/74LS393 each contain a pair of high-speed 4-stage ripple counters. Each half of the LS390 is partitioned into a divide-by-two section and a divide-by five section, with a separate clock input for each section. The two sections can be connected to count in the 8.4.2.1 BCD code or they can count in a biquinary sequence to provide a square wave (50% duty cycle) at the final output.

Each half of the LS393 operates as a Modulo-16 binary divider, with the last three stages triggered in a ripple fashion. In both the LS390 and the LS393, the flip-flops are triggered by a HIGH-to-LOW transition of their CP inputs. Each half of each circuit type has a Master Reset input which responds to a HIGH signal by forcing all four outputs to the LOW state.

• Dual Versions of LS290 and LS293

• LS390 has Separate Clocks Allowing ÷2, ÷2.5, ÷5
• Individual Asynchronous Clear for Each Counter
• Typical Max Count Frequency of 50 MHz
• Input Clamp Diodes Minimize High Speed Termination Effects

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