CD74HC4020

ACTIVE

Texas Instruments CD74HC4020 Product Info

1 April 2026 0

Function	Counter
Bits (#)	14
Technology family	HC
Supply voltage (min) (V)	2
Supply voltage (max) (V)	6
Input type	Standard CMOS
Output type	Push-Pull
Features	Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode
Operating temperature range (°C)	-55 to 125
Rating	Catalog

PDIP (N)-16-181.42 mm² 19.3 x 9.4

Fully static operation
Buffered inputs
Common reset
Negative edge clocking
Fanout (over temperature range)
- Standard outputs: 10 LSTTL loads
- Bus driver outputs: 15 LSTTL loads
Wide operating temperature range: -55℃ to 125℃
Balanced propagation delay and transition times
Significant power reduction compared to LSTTL Logic ICs
HC types
- 2 V to 6 V operation
- High noise immunity: N_IL = 30%, N_IH = 30% of V_CC at V_CC = 5 V
HCT types
- 4.5 V to 5.5 V operation
- Direct LSTTL input logic compatibility, V_IL = 0.8 V (max), V_IH = 2 V (min)
- CMOS input compatibility, I_I ≤ 1 µA at V_OL,V_OH

Fully static operation
Buffered inputs
Common reset
Negative edge clocking
Fanout (over temperature range)
- Standard outputs: 10 LSTTL loads
- Bus driver outputs: 15 LSTTL loads
Wide operating temperature range: -55℃ to 125℃
Balanced propagation delay and transition times
Significant power reduction compared to LSTTL Logic ICs
HC types
- 2 V to 6 V operation
- High noise immunity: N_IL = 30%, N_IH = 30% of V_CC at V_CC = 5 V
HCT types
- 4.5 V to 5.5 V operation
- Direct LSTTL input logic compatibility, V_IL = 0.8 V (max), V_IH = 2 V (min)
- CMOS input compatibility, I_I ≤ 1 µA at V_OL,V_OH

CD74HC4020:High Speed CMOS Logic 14-Stage Binary Counter.Package:PDIP (N)-16-181.42 mm² 19.3 x 9.4

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