CD4026B - 具有解码 7 段显示输出和显示启用的 CMOS 十进制计数器/除法器

CD4026B是TI德州仪器公司的一款计数器/算术/奇偶校验功能产品，CD4026B是具有解码 7 段显示输出和显示启用的 CMOS 十进制计数器/除法器，本站介绍了CD4026B的封装应用图解、特点和优点、功能等，并给出了与CD4026B相关的TI元器件型号供参考。

CD4026B - 具有解码 7 段显示输出和显示启用的 CMOS 十进制计数器/除法器 - 计数器/算术/奇偶校验功能 - 特殊逻辑 - 德州仪器

产品描述

CD4026B and CD4033B each consist of a 5-stage Johnson decade counter and an output decoder which converts the Johnson code to a 7-segment decoded output for driving one stage in a numerical display.

These devices are particularly advantageous in display applications where low power dissipation and /or low package count are important.

Inputs common to both types are CLOCK, RESET, & CLOCK INHIBIT; common outputs are CARRY OUT and the seven decoded outputs (a, b, c, d, e, f, g). Additional inputs and outputs for the CD4026B include DISPLAY ENABLE input and DISPLAY ENABLE and UNGATED "C-SEGMENT" outputs. Signals peculiar to the CD4033B are RIPPLE-BLANKING INPUT AND LAMP TEST INPUT and a RIPPLE-BLANKING OUTPUT.

A high RESET signal clears the decade counter to its zero count. The counter is advanced one count at the positive clock signal transition if the CLOCK INHIBIT signal is low. Counter advancement via the clock line is inhibited when the CLOCK INHIBIT signal is high. The CLOCK INHIBIT signal can be used as a negative-edge clock if the clock line is held high. Antilock gating is provided on the JOHNSON counter, thus assuring proper counting sequence. The CARRY-OUT (Cout) signal completes one cycle every ten CLOCK INPUT cycles and is used to clock the succeeding decade directly in a multi-decade counting chain. The seven decoded outputs (a, b, c, d, e, f, g) illuminate the proper segments in a seven segment display device used for representing the decimal numbers 0 to 9. The 7-segment outputs go high on selection in the CD4033B; in the CD4026B these outputs go high only when the DISPLAY ENABLE IN is high.

The CD4026B- and CD4033B-series types are supplied in 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).

产品特性

Counter and 7-segment decoding in one package
Easily interfaced with 7-segment display types
Fully static counter operation: DC to 6 MHz (typ.) at VDD = 10 V
Ideal for low-power displays
Display enable output (CD4026B)
"Ripple blanking" and lamp test (CD4033B)
100% tested for quiescent current at 20 V
Standardized, symmetrical output characteristics
5-V, 10-V, and 15-V parametric ratings
Schmitt-triggered clock inputs
Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of ’B’ Series CMOS Devices"
Applications
- Decade counting 7-segment decimal display
- Frequency division 7-segment decimal displays
- Clocks, watches, timers (e.g. ÷60, ÷60, ÷ 12 counter/display)
- Counter/display driver for meter applications

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