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74HC4520 Series

High Speed CMOS Logic Dual Binary Up-Counters

Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/

Catalog

High Speed CMOS Logic Dual Binary Up-Counters

PartVoltage - Supply [Max]Voltage - Supply [Min]Count RateTrigger TypeNumber of Elements [custom]Mounting TypeOperating Temperature [Min]Operating Temperature [Max]TimingNumber of Bits per ElementPackage / CasePackage / CaseSupplier Device PackageDirectionLogic TypeReset
Texas Instruments
CD74HC4520MT
6 V
2 V
35 MHz
Negative, Positive
2
Surface Mount
-55 °C
125 °C
Synchronous
4
16-SOIC
0.154 in, 3.9 mm Width
16-SOIC
Up
Binary Counter
Asynchronous
Texas Instruments
CD74HC4520E
6 V
2 V
35 MHz
Negative, Positive
2
Through Hole
-55 °C
125 °C
Synchronous
4
16-DIP
0.3 in, 7.62 mm
16-PDIP
Up
Binary Counter
Asynchronous
Texas Instruments
CD74HC4520M96
6 V
2 V
35 MHz
Negative, Positive
2
Surface Mount
-55 °C
125 °C
Synchronous
4
16-SOIC
0.154 in, 3.9 mm Width
16-SOIC
Up
Binary Counter
Asynchronous
Texas Instruments
CD74HC4520M
6 V
2 V
35 MHz
Negative, Positive
2
Surface Mount
-55 °C
125 °C
Synchronous
4
16-SOIC
0.154 in, 3.9 mm Width
16-SOIC
Up
Binary Counter
Asynchronous
Texas Instruments
CD74HC4520M96G4
6 V
2 V
35 MHz
Negative, Positive
2
Surface Mount
-55 °C
125 °C
Synchronous
4
16-SOIC
0.154 in, 3.9 mm Width
16-SOIC
Up
Binary Counter
Asynchronous

Key Features

• Positive or Negative Edge TriggeringSynchronous Internal Carry PropagationFanout (Over Temperature Range)Standard Outputs...10 LSTTL LoadsBus Driver Outputs...15 LSTTL LoadsWide Operating Temperature Range... –55°C to 125°CBalanced Propagation Delay and Transition TimesSignificant Power Reduction Compared to LSTTL Logic ICsHC Types2V to 6V OperationHigh Noise Immunity: NIL= 30%, NIH= 30% of VCCat VCC= 5VHCT Types4.5V to 5.5V OperationDirect LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH= 2V (Min)CMOS Input Compatibility, Il1µA at VOL, VOHPositive or Negative Edge TriggeringSynchronous Internal Carry PropagationFanout (Over Temperature Range)Standard Outputs...10 LSTTL LoadsBus Driver Outputs...15 LSTTL LoadsWide Operating Temperature Range... –55°C to 125°CBalanced Propagation Delay and Transition TimesSignificant Power Reduction Compared to LSTTL Logic ICsHC Types2V to 6V OperationHigh Noise Immunity: NIL= 30%, NIH= 30% of VCCat VCC= 5VHCT Types4.5V to 5.5V OperationDirect LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH= 2V (Min)CMOS Input Compatibility, Il1µA at VOL, VOH

Description

AI
The CD74HC4518 is a dual BCD up-counter. The ’HC4520 and CD74HCT4520 are dual binary up-counters. Each device consists of two independent internally synchronous 4-stage counters. The counter stages are D-type flip-flops having interchangeable CLOCK and ENABLE lines for incrementing on either the positive-going or the negative-going transition of CLOCK. The counters are cleared by high levels on the MASTER RESET lines. The counter can be cascaded in the ripple mode by connecting Q3to the ENABLE input of the subsequent counter while the CLOCK input of the latter is held low. The CD74HC4518 is a dual BCD up-counter. The ’HC4520 and CD74HCT4520 are dual binary up-counters. Each device consists of two independent internally synchronous 4-stage counters. The counter stages are D-type flip-flops having interchangeable CLOCK and ENABLE lines for incrementing on either the positive-going or the negative-going transition of CLOCK. The counters are cleared by high levels on the MASTER RESET lines. The counter can be cascaded in the ripple mode by connecting Q3to the ENABLE input of the subsequent counter while the CLOCK input of the latter is held low.