CD4532B - CMOS 8 位优先级编码器

CD4532B是TI德州仪器公司的一款解码器/编码器/多路复用器产品，CD4532B是CMOS 8 位优先级编码器，本站介绍了CD4532B的封装应用图解、特点和优点、功能等，并给出了与CD4532B相关的TI元器件型号供参考。

CD4532B - CMOS 8 位优先级编码器 - 解码器/编码器/多路复用器 - 特殊逻辑 - 德州仪器

产品描述

CD4532B consists of combinational logic that encodes the highest priority input (D7-D0) to a 3-bit binary code. The eight inputs, D7 through D0, each have an assigned priority; D7 is the highest priority and D0 is the lowest. The priority encoder is inhibited when the chip-enable input EI is low. When EI is high, the binary representation of the highest-priority input appears on output lines Q2-Q0, and the group select line GS is high to indicate that priority inputs are present. The enable-out (EO) is high when no priority inputs are present. If any one input is high, EO is low and all cascaded lower-order stages are disabled.

The CD4532B 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 (M, M96, MT, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

产品特性

Converts from 1 of 8 to binary
Provides cascading feature to handle any number of inputs
Group select indicates one or more priority inputs
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): 0.5 V at VDD = 5 V 1.5 V at VDD = 10 V 1.5 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:
- Priority encoder
- Binary or BCD encoder (keyboard encoding)
- Floating point arithmetic

Data sheet acquired from Harris Semiconductor

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