CD4536B中文资料CMOS 可编程计时器数据手册TI规格书

描述 Description

CD4536B is a programmable timer consisting of 24 ripple-binary counter stages. The salient feature of this device is its flexibility. The device can count from 1 to 224 or the first 8 stages can be bypassed to allow an output, selectable by a 4-bit code, from any one of the remaining 16 stages. It can be driven by an external clock or an RC oscillator that can be constructed using on-chip components. Input IN1 serves as either the external clock input or the input to the on-chip RC oscillator. OUT1 and OUT2 are connection terminals for the external RC components. In addition, an on-chip monostable circuit is provided to allow a variable pulse width output. Various timing functions can be achieved using combinations of these capabilities.

A logic 1 on the 8-BYPASS input enables a bypass of the first 8 stages and makes stage 9 the first counter stage of the last 16 stages. Selection of 1 of 16 outputs is accomplished by the decoder and the BCD inputs A, B, C and D. MONO IN is the timing input for the on-chip monostable oscillator. Grounding of the MONO IN terminal through a resistor of 10K ohms or higher, disables the one-shot circuit and connects the decoder directly to the DECODE OUT terminal. A resistor to VDD and a capacitor to ground from the MONO IN terminal enables the one-shot circuit and control its pulse width.

A fast test mode is enabled by a logic 1 on 8-BYPASS, SET, and RESET. This mode divides the 24-stage counter into three 8-stage sections to facilitate a fast test sequence.

The CD4536B 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 (DW, DWR, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

特性 Features

• 24 flip-flop stages - - counts from 20 to 224
• Last 16 stages selectable by BCD select code
• Bypass input allows bypassing first 8 stages
• On-chip RC oscillator provision
• Clock inhibit input
• Schmitt-trigger in clock line permits operation with very long rise and fall times
• On-chip monostable output provision
• Typical fCL = 3 MHz at VDD = 10 V
• Test mode allows fast test sequence
• Set and reset inputs
• Capable of driving two low power TTL loads, one lower-power Schottky load, or two HTL loads over the rated temperature range
• Standardized, symmetrical output characteristics
• 100% tested for quiescent current at 20 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\"

简介

CD4536B属于集成电路（IC）的可编程定时器振荡器。由TI制造生产的CD4536B可编程定时器和振荡器可以设置用来以指定频率提供定时脉冲的器件。