CD4724B Texas instruments

CD4724B

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CD4724B

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Описание

CD4724B 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 CD4724B types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (NSR suffix), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

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 µA 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 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
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

NOT RECOMMENDED FOR NEW DESIGNS SEE CD4099B

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) (MBits)	16
IOL (max) (mA)	2.4
IOH (max) (mA)	-2.4
Features	High speed (tpd 10-50ns), Partial power down (Ioff), Standard speed (tpd > 50ns)
Operating temperature range (°C)	-55 to 125
Rating	Catalog