CD4508B - CMOS 二路 4 位锁存器

CD4508B是TI德州仪器公司的一款其它锁存器产品，CD4508B是CMOS 二路 4 位锁存器，本站介绍了CD4508B的封装应用图解、特点和优点、功能等，并给出了与CD4508B相关的TI元器件型号供参考。

CD4508B - CMOS 二路 4 位锁存器 - 其它锁存器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

CD4508B dual 4-bit latch contains two identical 4-bit latches with separate STROBE, RESET, and OUTPUT DISABLE control. With the STROBE line in the high state, the data on the "D" inputs appear at the corresponding "Q" outputs provided the DISABLE line is in the low state. Changing the STROBE line to the low state locks the data into the latch. A high on the reset line forces the outputs to a low level regardless of the state of the STROBE input. The outputs are forced to the high-impedance state for bus line applications by a high level on the DISABLE input.

The CD4508B types are supplied in 24-lead hermetic dual-in-line ceramic packages (F3A suffix), 24-lead dual-in-line plastic packages (E suffix), 24-lead small-outline packages (M, M96, and NSR suffixes), and 24-lead thin shrink small-outline packages (PW and PWR suffixes).

The CD4508B is similar to industry type MC14508.

产品特性

Two independent 4-bit latches
Individual master reset for each 4-bit latch
3-state outputs with high-impedance state for bus line applications
Medium-speed operation: tPHL = tPLH = 70 ns (typ.) at VDD = 10 V and CL = 50 pF
100% tested for quiescent current at 20 V
5-V, 10-V, and 15-V parametric ratings
Standardized, symmetrical output characteristics
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 VDD = 5 V 2 V at VDD = 10 V 2.5 V at VDD = 15 V
Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of ’B’ Series CMOS Devices"
Applications:
- Buffer storage
- Holding registers
- Data storage and multiplexing

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