74HC4020; 74HCT4020

14-stage binary ripple counter

The 74HC4020; 74HCT4020 is a 14-stage binary ripple counter with a clock input (CP), an overriding asynchronous master reset input (MR) and 12 buffered parallel outputs (Q0, and Q3 to Q13). The counter advances on the HIGH-to-LOW transition of CP. A HIGH on MR clears all counter stages and forces all outputs LOW, independent of the state of CP. Each counter stage is a static toggle flip-flop. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V_CC.

Features and benefits

Wide supply voltage range from 2.0 V to 6.0 V
CMOS low power dissipation
High noise immunity
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Complies with JEDEC standards:
- JESD8C (2.7 V to 3.6 V)
- JESD7A (2.0 V to 6.0 V)
Input levels:
- For 74HC4020: CMOS level
- For 74HCT4020: TTL level
ESD protection:
- HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Applications

Frequency dividing circuits
Time delay circuits
Control counters

Parametrics

Type number	Product status	V_CC (V)	Output drive capability (mA)	Logic switching levels	t_pd (ns)	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
74HC4020BQ	Production	2.0 - 6.0	± 5.2	CMOS	11	low	-40~125	83	7.0	51	DHVQFN16
74HC4020D	Production	2.0 - 6.0	± 5.2	CMOS	11	low	-40~125	83	5.2	41	SO16
74HC4020PW	Production	2.0 - 6.0	± 5.2	CMOS	11	low	-40~125	115	2.3	43.8	TSSOP16
74HCT4020BQ	Production	4.5 - 5.5	± 4	TTL	15	low	-40~125	83	7.0	51	DHVQFN16
74HCT4020D	Production	4.5 - 5.5	± 4	TTL	15	low	-40~125	81	4.8	40.2	SO16
74HCT4020PW	Production	4.5 - 5.5	± 4	TTL	15	low	-40~125	115	2.3	43.8	TSSOP16

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74HC4020BQ	DHVQFN16 (SOT763-1)	SOT763-1		SOT763-1_115	Active	HC4020	74HC4020BQ,115 ( 9352 907 84115 )
74HC4020D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_653	Active	74HC4020D	74HC4020D,653 ( 9337 147 70653 )
74HC4020PW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	SOT403-1_118	Active	HC4020	74HC4020PW,118 ( 9351 884 70118 )
74HCT4020BQ	DHVQFN16 (SOT763-1)	SOT763-1		SOT763-1_115	Active	HT4020	74HCT4020BQ,115 ( 9352 907 85115 )
74HCT4020D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_653	Active	74HCT4020D	74HCT4020D,653 ( 9337 152 50653 )
74HCT4020PW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	SOT403-1_118	Active	HCT4020	74HCT4020PW,118 ( 9351 890 90118 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74HC4020D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_652	Withdrawn / End-of-life	74HC4020D	74HC4020D,652 ( 9337 147 70652 )
74HCT4020D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_652	Withdrawn / End-of-life	74HCT4020D	74HCT4020D,652 ( 9337 152 50652 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product
74HC4020D	933714770652	2021-12-31	2022-06-30	74HC4020D
74HC4020PW	935188470112	2021-12-31	2022-06-30	74HC4020PW
74HCT4020D	933715250652	2021-12-31	2022-06-30	74HCT4020D
74HCT4020PW	935189090112	2021-12-31	2022-06-30	74HCT4020PW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74HC4020BQ	74HC4020BQ,115	74HC4020BQ	Always Pb-free
74HC4020D	74HC4020D,653	74HC4020D	week 6, 2004
74HC4020PW	74HC4020PW,118	74HC4020PW	week 10, 2005
74HCT4020BQ	74HCT4020BQ,115	74HCT4020BQ	Always Pb-free
74HCT4020D	74HCT4020D,653	74HCT4020D	week 6, 2004
74HCT4020PW	74HCT4020PW,118	74HCT4020PW	week 10, 2005

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type number	Orderable part number	Chemical content	RoHS	RHF-indicator	Leadfree conversion date
74HC4020D	74HC4020D,652	74HC4020D			week 6, 2004
74HCT4020D	74HCT4020D,652	74HCT4020D			week 6, 2004

Quality and reliability disclaimer

Documentation (11)

File name	Title	Type	Date
74HC_HCT4020	14-stage binary ripple counter	Data sheet	2024-03-27
AN11044	Pin FMEA 74HC/74HCT family	Application note	2019-01-09
hc	HC/HCT Spice model	SPICE model	2022-02-17
HCT_USER_GUIDE	HC/T User Guide	User manual	1997-10-31
SOT763-1	plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm body	Package information	2023-05-11
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08
SOT109-1	plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body	Package information	2023-11-07
SOT403-1	plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm body	Package information	2023-11-08
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08

Support

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Models

File name	Title	Type	Date
hc	HC/HCT Spice model	SPICE model	2022-02-17

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