Key facts
- Brand
- STMicroelectronics
- Model
- 56B
- Category
- Other Electronics
- Documents
- 13
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics HCF4056B BCD to 7 Segment Decoder Datasheet
The HCF4056B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology, available in DIP and SOP packages. It functions as a single digit BCD to 7 segment decoder driver circuit that provides a level shifting function on the chip. This feature permits the BCD input-signal swings to be the same as or different from the 7-segment output signal swings. The 7-segment outputs are controlled by the DISPLAY-FREQUENCY (DF) input, which causes the selected segment outputs to be low, high, or a square wave output for liquid crystal displays. The device provides a strobed-latch function at the BCD inputs and decodes all input combinations including 0-9, L, H, P, A, and blank positions.
Read onlineSTMicroelectronics 56B specifications
| Supply Voltage | 3 to 20 V |
|---|---|
| Operating Temperature | -55 to +125 °C |
| Input Leakage Current | 100nA (MAX) |
| Package Types | DIP and SOP |
Source: STMicroelectronics HCF4056B BCD to 7 Segment Decoder Datasheet
All STMicroelectronics 56B documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- STMicroelectronics HCF4056B BCD to 7 Segment Decoder Datasheet 10 p
- STMicroelectronics HCF4556B Dual 1 of 4 Decoder/Demultiplexer Datasheet 9 p
- ST M35B32 32 Kbit 256-byte page fast program EEPROM memory accessed by SPI bus interface handbook 42 p
- ST M24256-BW M24256-BR M24256-BF M24256-DR M24256-DF 256-Kbit serial I C bus EEPROM handbook 41 p
- STMicroelectronics M41T56 Serial RTC with NVRAM Datasheet 27 p
- STMicroelectronics M41T11 Serial RTC with NVRAM Datasheet 30 p
- ST M24256-B M24128-B 256Kbit 128Kbit Serial I C Bus EEPROM With Three Chip Enable Lines handbook 25 p
- ST M24256-B M24128-B 256Kbit 128Kbit Serial I C Bus EEPROM With Three Chip Enable Lines handbook(1) 19 p
- ST STM8L051F3 Value line 8-bit ultralow power MCU 8-KB Flash 256-byte data EEPROM RTC timers USART I2C SPI ADC handbook 46 p
- ST M24128-BW M24128-BR M24256-BW M24256-BR 256Kbit 128Kbit Serial I C Bus EEPROM With Three Chip Enable Lines handbook 25 p
- STMicroelectronics M27C256B 256 Kbit UV EPROM and OTP EPROM Datasheet 16 p
- ST HCC4054B/55B/56B HCF4054B/55B/56B handbook 15 p
Questions answered in these manuals
What display types does the HCF4056B support?
The device provides full decoding of all input combinations including 0-9, L, H, P, A, and blank positions.
From: STMicroelectronics HCF4056B BCD to 7 Segment Decoder Datasheet
Is an external capacitor required for liquid crystal displays?
No, the HCF4056B provides an equivalent AC output drive for liquid crystal displays without requiring an external capacitor.
From: STMicroelectronics HCF4056B BCD to 7 Segment Decoder Datasheet
What is the function of the Enable input?
When the Enable input is high, the outputs are high regardless of the state of the select inputs A and B.
From: STMicroelectronics HCF4556B Dual 1 of 4 Decoder/Demultiplexer Datasheet
Are the outputs active low?
Yes, on the HCF4556B the outputs are low on select.
From: STMicroelectronics HCF4556B Dual 1 of 4 Decoder/Demultiplexer Datasheet
How fast is the programming time for the Event sector?
The Event sector can program 256 bytes in less than 1 ms.
From: ST M35B32 32 Kbit 256-byte page fast program EEPROM memory accessed by SPI bus interface handbook
What is the programming time for the Data sector?
The Data sector writes 256 bytes in less than 5 ms.
From: ST M35B32 32 Kbit 256-byte page fast program EEPROM memory accessed by SPI bus interface handbook