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74HC/HCT4520
General description
The 74HC/HCT4520 are high-speed Si-gate CMOS devices and are pin compatible with the '4520' of the '4000B' series. They are specified in compliance with JEDEC standard no. 7A.
The 74HC/HCT4520 are dual 4-bit internally synchronous binary counters with an active HIGH clock input (nCP0) and an active LOW clock input (nCP1), buffered outputs from all four bit positions (nQ0 to nQ3) and an active HIGH overriding asynchronous master reset input (nMR).
The counter advances on either the LOW-to-HIGH transition of nCP0 if nCP1 is HIGH or the HIGH-to-LOW transition of nCP1 if nCP0 is LOW. Either nCP0 or nCP1 may be used as the clock input to the counter and 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.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74HC4520D | 74HC4520D | 9337 149 00112 | Volume production | SOT109-1
(SO16) | Bulk Pack | Standard Marking | 74HC4520D
| week 4, 2004 |
| 74HC4520D | 74HC4520D-T | 9337 149 00118 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" | Standard Marking | 74HC4520D
| week 4, 2004 |
| 74HC4520DB | 74HC4520DB | 9351 887 50112 | Volume production | SOT338-1
(SSOP16) | Tube | Standard Marking | 74HC4520DB
| week 17, 2005 |
| 74HC4520DB | 74HC4520DB-T | 9351 887 50118 | Volume production | SOT338-1
(SSOP16) | Reel Pack, SMD, 13" | Standard Marking | 74HC4520DB
| week 17, 2005 |
| 74HC4520N | 74HC4520N | 9336 698 30652 | Volume production | SOT38-4
(DIP16) | Bulk Pack, CECC | Standard Marking | 74HC4520N
| Always Pb-free |
| 74HC4520PW | 74HC4520PW | 9351 891 30112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | 74HC4520PW
| week 10, 2005 |
| 74HC4520PW | 74HC4520PW-T | 9351 891 30118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking | 74HC4520PW
| week 10, 2005 |
| 74HCT4520D | 74HCT4520D | 9337 153 80112 | Volume production | SOT109-1
(SO16) | Bulk Pack | Standard Marking | 74HCT4520D
| week 4, 2004 |
| 74HCT4520D | 74HCT4520D-T | 9337 153 80118 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" | Standard Marking | 74HCT4520D
| week 4, 2004 |
| 74HCT4520DB | 74HCT4520DB | 9351 901 10112 | Volume production | SOT338-1
(SSOP16) | Tube | Standard Marking | 74HCT4520DB
| week 17, 2005 |
| 74HCT4520DB | 74HCT4520DB-T | 9351 901 10118 | Volume production | SOT338-1
(SSOP16) | Reel Pack, SMD, 13" | Standard Marking | 74HCT4520DB
| week 17, 2005 |
| 74HCT4520N | 74HCT4520N | 9336 704 60112 | Volume production | SOT38-4
(DIP16) | Bulk Pack | Standard Marking | 74HCT4520N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74HC4520D | 9337 149 00112 | 0.3700 | NA | AVNET ELECTRONICS MARKETING | 1,095 | 11/21/2008 | Buy online | Order samples |
| EU | FARNELL | 773 | 11/21/2008 | Buy online | ||||
| NA | NEWARK | 773 | 11/21/2008 | Buy online | ||||
| 74HC4520D | 9337 149 00118 | 0.3700 | NA | FUTURE ELECTRONICS- NORTH AMER | 1,500 | 11/21/2008 | Buy online | not available |
| 74HC4520DB | 9351 887 50112 | 0.3900 | NA | DIGI-KEY CORPORATION | 2,993 | 11/21/2008 | Buy online | not available |
| 74HC4520DB | 9351 887 50118 | 0.3900 | NA | MOUSER ELECTRONICS | 1,990 | 11/21/2008 | Buy online | Order samples |
| 74HC4520N | 9336 698 30652 | 0.3700 | EU | FARNELL | 147 | 11/21/2008 | Buy online | Order samples |
| NA | NEWARK | 147 | 11/21/2008 | Buy online | ||||
| 74HC4520PW | 9351 891 30112 | 0.3700 | NA | DIGI-KEY CORPORATION | 2,031 | 11/21/2008 | Buy online | not available |
| 74HC4520PW | 9351 891 30118 | 0.3700 | Order samples | |||||
| 74HCT4520D | 9337 153 80112 | 0.3600 | not available | |||||
| 74HCT4520D | 9337 153 80118 | 0.3600 | Order samples | |||||
| 74HCT4520DB | 9351 901 10112 | 0.3800 | NA | DIGI-KEY CORPORATION | 811 | 11/21/2008 | Buy online | not available |
| 74HCT4520DB | 9351 901 10118 | 0.3800 | Order samples | |||||
| 74HCT4520N | 9336 704 60112 | 0.3700 | Order samples |
Applications
- Multistage synchronous counting
- Multistage asynchronous counting
- Frequency dividers
Parametrics/similar products
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|---|
| 74HC4520D | SOT109-1
(SO16) | Dual 4-Bit Synchronous Binary Counter | 68 | 24@5V | 2.0-6.0 V | 16 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC4520DB | SOT338-1
(SSOP16) | Dual 4-Bit Synchronous Binary Counter | 68 | 24@5V | 2.0-6.0 V | 16 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC4520N | SOT38-4
(DIP16) | Dual 4-Bit Synchronous Binary Counter | 68 | 24@5V | 2.0-6.0 V | 16 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC4520PW | SOT403-1
(TSSOP16) | Dual 4-Bit Synchronous Binary Counter | 68 | 24@5V | 2.0-6.0 V | 16 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HCT4520D | SOT109-1
(SO16) | Dual 4-Bit Synchronous Binary Counter; TTL Enabled | 64 | 24 | 4.5-5.5 V | 16 | Low Power | TTL | +/- 4 mA |
| 74HCT4520DB | SOT338-1
(SSOP16) | Dual 4-Bit Synchronous Binary Counter; TTL Enabled | 64 | 24 | 4.5-5.5 V | 16 | Low Power | TTL | +/- 4 mA |
| 74HCT4520N | SOT38-4
(DIP16) | Dual 4-Bit Synchronous Binary Counter; TTL Enabled | 64 | 24 | 4.5-5.5 V | 16 | Low Power | TTL | +/- 4 mA |
Similar products
74HC/HCT4520 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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