• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

CD4055B and CD4056B types are single-digit BCD-to-7-segment decoder/driver circuits that provide level-shifting functions on the chip. This feature permits the BCD input-signal swings (V_DD to V_SS) to be the same as or different from the 7-segment output-signal swings (V_DD to V_EE). For example, the BCD input-signal (V_DD to V_SS) may be as small as 0 to -3 V, whereas the output-display drive-signal swing (V_DD to V_EE) may be as large as from 0 to -15 V. If V_DD to V_EE exceeds 15 V, V_DD to V_SS should be at least 4V (0 to -4V). 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). When the DF input is low the output segments will be high when selected by the BCD inputs.

特性

• Operation of liquid crystals with CMOS circuits provides ultra-low-power displays
• Equivalent ac output drive for liquid-crystal displays - no external capacitor required
• Voltage doubling across display, e.g. V_DD - V_EE = 18 V results in effective 36 V p-p drive across selected display segments
• Low- or high-output level dc drive for other types of displays
• On-chip logic-level conversion for different input- and output-level swings
• Full decoding of all input combinations: 0-9, L, H, P, A, -, and blank positions
• Strobed-latch function-CD4054B Series and CD4056B Series
• DISPLAY-FREQUENCY (DF) output for liquid-crystal common-line drive signal- CD4055B Series (CD4054B Series also: see introductory text)
• 100% tested for quiescent current at 20 V
• Maximum input current of 1 µA at 18 V over full package-temperature range; 100nA at 18 V and 25°C
• Noise margin (over full package-temperature range):
  • 1 V at V_DD = 5 V
  • 2 V at V_DD = 10 V
  • 2.5 V at V_DD = 15 V
• 5-V, 10-V, and 15-V parametric ratings
• Applications:
  • General-purpose displays
  • Calculators and meter
  • Wall and table clocks
  • Industrial control panels