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CMOS 8 位可寻址锁存器
Function Addressable Latch
Number of channels (#) 8
Technology Family CD4000
Supply voltage (Min) (V) 3
Supply voltage (Max) (V) 18
Input type Standard CMOS
Output type Push-Pull
Data rate (Max) (Mbps) 16
IOL (Max) (mA) 2.4
IOH (Max) (mA) -2.4
Features Standard speed (tpd > 50ns), High speed (tpd 10-50ns), Partial power down (Ioff)
  • Serial data input
  • Active parallel output
  • Storage register capability
  • Master clear
  • Can function as demultiplexer
  • Standardized, symmetrical output characteristics
  • 100% tested for quiescent current at 20 V
  • Maximum input current of 1 uA at 18 V over full package-temperature range; 100 nA at 18 V and 25°C
  • Noise margin (full package-temperature range) =
    ????????1 V at VDD = 5 V
    ????????2 V at VDD = 10 V
    ?????2.5 V at VDD = 15 V
  • 5-V, 10-V, and 15-V parametric ratings
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of ’B’ Series CMOS Devices"
  • Applications:
    • Multi-line decoders
    • A/D converters

CD4099B 8-bit addressable latch is a serial-input, parallel-output storage register that can perform a variety of functions.

Data are inputted to a particular bit in the latch when that bit is addressed (by means of input A0, A1, A2) and when WRITE DISABLE is at a low level. When WRITE DISABLE is high, data entry is inhibited; however, all 8 outputs can be continuously read independent of WRITE DISABLE and address inputs.

A master RESET input is available, which resets all bits to a logic "0" level when RESET and WRITE DISABLE are at a high level. When RESET is at a high level, and WRITE RESET is at a low level, the latch acts as a 1-of-8 demultiplexer; the bit that is addressed has an active output which follows the data input, while all unaddressed bits are held to a logic "0" level.

The CD4099B types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic package (E suffix), 16-lead small-outline package (M, M96, MT, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).