74HC4520; 74HCT4520
Dual 4-bit synchronous binary counter
The 74HC4520; 74HCT4520 are dual 4-bit internally synchronous binary counters with two clock inputs (nCP0 and nCP1). They have buffered outputs from all 4 bit positions (nQ0 to nQ3) and an asynchronous master reset input (nMR). The counter advances on the LOW-to-HIGH transition of nCP0 when nCP1 is HIGH. It also advances on the HIGH-to-LOW transition of nCP1 when nCP0 is LOW. Either nCP0 or nCP1 may be used as the clock input to the counter. The other clock input may be used as a clock enable input. A HIGH on nMR, resets the counter (nQ0 to nQ3 = LOW) independent of nCP0 and nCP1. Inputs include clamp diodes. It enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
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 74HC4520: CMOS level
For 74HCT4520: 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
Specified from -40 °C to +85 °C and -40 °C to +125 °C
Applications
Multistage synchronous counting
Multistage asynchronous counting
Frequency dividers
Parametrics
| Type number | VCC (V) | Output drive capability (mA) | Logic switching levels | tpd (ns) | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|
| 74HC4520D | 2.0 - 6.0 | ± 5.2 | CMOS | 24 | low | -40~125 | SO16 |
| 74HC4520PW | 2.0 - 6.0 | ± 5.2 | CMOS | 24 | low | -40~125 | TSSOP16 |
| 74HCT4520D | 4.5 - 5.5 | ± 4 | TTL | 24 | low | -40~125 | SO16 |
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| 74HC4520D | 74HC4520D,118 (933714900118) |
Active | 74HC4520D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_118 |
| 74HC4520PW | 74HC4520PW,118 (935189130118) |
Active | HC4520 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
| 74HCT4520D | 74HCT4520D,118 (933715380118) |
Active | 74HCT4520D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_118 |
All type numbers in the table below are discontinued.
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| 74HC4520D | 74HC4520D,112 (933714900112) |
Withdrawn / End-of-life | 74HC4520D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_112 |
| 74HC4520DB | 74HC4520DB,112 (935188750112) |
Obsolete | HC4520 Standard Procedure Standard Procedure |
SSOP16 (SOT338-1) |
SOT338-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
Not available |
| 74HC4520DB,118 (935188750118) |
Obsolete | HC4520 Standard Procedure Standard Procedure | Not available | ||||
| 74HCT4520DB | 74HCT4520DB,112 (935190110112) |
Obsolete | HT4520 Standard Procedure Standard Procedure |
SSOP16 (SOT338-1) |
SOT338-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
Not available |
| 74HCT4520DB,118 (935190110118) |
Obsolete | HT4520 Standard Procedure Standard Procedure | Not available |
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| 74HC4520D | 74HC4520D,118 | 74HC4520D |
|
|
| 74HC4520PW | 74HC4520PW,118 | 74HC4520PW |
|
|
| 74HCT4520D | 74HCT4520D,118 | 74HCT4520D |
|
|
All type numbers in the table below are discontinued.
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| 74HC4520D | 74HC4520D,112 | 74HC4520D |
|
|
| 74HC4520DB | 74HC4520DB,112 | 74HC4520DB |
|
|
| 74HC4520DB | 74HC4520DB,118 | 74HC4520DB |
|
|
| 74HCT4520DB | 74HCT4520DB,112 | 74HCT4520DB |
|
|
| 74HCT4520DB | 74HCT4520DB,118 | 74HCT4520DB |
|
|
Documentation (17)
| File name | Title | Type | Date |
|---|---|---|---|
| 74HC_HCT4520 | Dual 4-bit synchronous binary counter | Data sheet | 2024-04-02 |
| AN11044 | Pin FMEA 74HC/74HCT family | Application note | 2019-01-09 |
| SOT109-1 | 3D model for products with SOT109-1 package | Design support | 2020-01-22 |
| SOT403-1 | 3D model for products with SOT403-1 package | Design support | 2020-01-22 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| SO16_SOT109-1_mk | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body | Marcom graphics | 2017-01-28 |
| SSOP16_SOT338-1_mk | plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body | Marcom graphics | 2017-01-28 |
| TSSOP16_SOT403-1_mk | plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body | Marcom graphics | 2017-01-28 |
| 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 |
| SOT338-1 | plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body | Package information | 2022-06-20 |
| 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 |
| SO-SOJ-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| SSOP-TSSOP-VSO-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| HCT_USER_GUIDE | HC/T User Guide | User manual | 1997-10-31 |
| SO-SOJ-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
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