Overview
The CD4536BE is a programmable timer IC produced by Texas Instruments. It consists of 24 ripple-binary counter stages, offering high flexibility in various timing applications. The device can count from 1 to 2^24, and the first 8 stages can be bypassed to allow an output selectable by a 4-bit BCD code from any one of the remaining 16 stages. It can be driven by an external clock or an on-chip RC oscillator. The CD4536BE also features an on-chip monostable circuit for variable pulse width output and includes set and reset inputs for control.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Counter Stages | 24 |
| Package Types | PDIP (N), SOIC (DW), SOP (NS), TSSOP (PW) |
| Number of Pins | 16 |
| Operating Temperature Range (°C) | -55 to 125 |
| Maximum Clock Frequency (at V_DD = 10 V) | 3 MHz |
| Supply Voltage Ratings | 5 V, 10 V, 15 V |
| Load Driving Capability | Two low power TTL loads, one lower-power Schottky load, or two HTL loads |
| Monostable Output Provision | Yes, with variable pulse width |
Key Features
- 24 flip-flop stages counting from 1 to 2^24
- Last 16 stages selectable by BCD select code
- Bypass input allows bypassing the first 8 stages
- On-chip RC oscillator provision
- Clock inhibit input
- Schmitt-trigger in clock line for operation with long rise and fall times
- On-chip monostable output provision with variable pulse width
- Set and reset inputs for control
- Fast test mode for quick testing
- Standardized, symmetrical output characteristics
- 100% tested for quiescent current at 20 V
Applications
The CD4536BE is suitable for a wide range of timing and counting applications, including:
- Timing circuits in digital systems
- Pulse width modulation
- Frequency division and multiplication
- Sequential logic circuits
- Automotive and industrial control systems
Q & A
- What is the primary function of the CD4536BE?
The CD4536BE is a programmable timer consisting of 24 ripple-binary counter stages.
- What are the different package types available for the CD4536BE?
The CD4536BE is available in PDIP (N), SOIC (DW), SOP (NS), and TSSOP (PW) packages.
- What is the operating temperature range of the CD4536BE?
The operating temperature range is -55°C to 125°C.
- Can the CD4536BE be driven by an external clock or an on-chip oscillator?
Yes, it can be driven by either an external clock or an on-chip RC oscillator.
- What is the maximum clock frequency of the CD4536BE at V_DD = 10 V?
The maximum clock frequency is 3 MHz at V_DD = 10 V.
- Does the CD4536BE have a monostable output provision?
Yes, it has an on-chip monostable circuit for variable pulse width output.
- How can the first 8 stages of the counter be bypassed?
The first 8 stages can be bypassed by setting a logic 1 on the 8-BYPASS input.
- What is the purpose of the BCD select code in the CD4536BE?
The BCD select code is used to select one of the 16 outputs from the last 16 stages of the counter.
- Can the CD4536BE drive TTL and Schottky loads?
Yes, it can drive two low power TTL loads, one lower-power Schottky load, or two HTL loads.
- Is there a fast test mode available for the CD4536BE?
Yes, a fast test mode is enabled by setting a logic 1 on 8-BYPASS, SET, and RESET inputs.
