TI CD4536BPW

CD4536B is a programmable timer consisting of 24 rippte-binary counter stages. The salient feature of this device is its ftexibility. 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.

• 24 flip-flop stages -- counts from 2° to 2^24
• Last 16 stages selectabie 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 tan = 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 Specifi cations for Description of 'B' Series CMOs Devices"