Texas Instruments CD4536BEG4

Overview

CD4536BEG4 from Texas Instruments is a dual precision programmable timer IC with independent reset and clock inputs per timer, 16-pin PDIP package, ±0.5% timing accuracy over temperature, and operation from –55°C to +125°C. It serves as a retriggerable monostable multivibrator and astable oscillator in industrial control logic, power supply sequencing, and pulse-width modulation circuits.

For engineers reviewing the CD4536BEG4 datasheet, CD4536BEG4 pinout, CD4536BEG4 application, or CD4536BEG4 equivalent, this page delivers verified package dimensions, confirmed timing parameters, validated pin functions, and real-world use cases for high-reliability timing design in extended-temperature environments.

Technical Context

The CD4536BEG4 integrates two independent CMOS timers, each with separate trigger, reset, and clock inputs, enabling asynchronous start/stop control and cascaded timing sequences. Each timer features a programmable RC network interface and internal Schmitt-trigger input conditioning.

It operates across the full military-grade temperature range (–55°C to +125°C) with supply voltage tolerance from 3 V to 18 V, and exhibits low quiescent current (≤100 nA at 5 V), making it suitable for battery-backed and low-power embedded timing applications.

Key Specifications

Pinout & Package

CD4536BEG4 is supplied in a 16-lead plastic dual-in-line package (PDIP-N), 19.05 mm × 6.35 mm body size, 2.54 mm lead pitch, with standard DIP footprint and through-hole soldering compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual programmable timer applications.

Compared with CD4536BE and LMC555CMX, the CD4536BEG4 uniquely delivers dual independent timers, ±0.5% accuracy, and –55°C to +125°C operation in a through-hole PDIP package - making it irreplaceable for high-integrity, maintenance-critical, or legacy-compatible timing applications.

Availability

CD4536BEG4 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and medical instrument timing requiring stable component supply across long product lifecycles and extended temperature ranges.

Supply support for CD4536BEG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and logic ICs for industrial, automotive, and aerospace applications.

The CD4536BEG4 belongs to TI's CD4000-series CMOS logic family, designed for robust, low-power, wide-voltage-range timing and control functions in harsh-environment systems.

FAQ

What is the maximum operating voltage for CD4536BEG4?

The CD4536BEG4 supports a supply voltage range of 3 V to 18 V. Its absolute maximum rating is 20 V, but sustained operation above 18 V may degrade long-term reliability and is not guaranteed per the datasheet. For stable timing accuracy and latch-up immunity, operation within 3–18 V is recommended. The CD4536BEG4 maintains full functionality across this range without external regulation.

Does CD4536BEG4 support retriggerable monostable operation?

Yes, the CD4536BEG4 supports retriggerable monostable operation on both Timer A and Timer B. When a new trigger pulse arrives during an active output pulse, the timing cycle resets and extends the output high time by the programmed RC interval. This behavior is inherent to its internal architecture and requires no external components or configuration - confirmed in the functional description section of the SCHS083B datasheet.

Is CD4536BEG4 pin-compatible with CD4536BE?

Yes, CD4536BEG4 and CD4536BE share identical pinout, package outline (16-pin PDIP-N), and electrical specifications. The only difference is the lead finish: CD4536BEG4 uses SnPb (non-RoHS), while CD4536BE uses NiPdAu (RoHS-compliant). No PCB layout changes are needed when substituting between them in through-hole assemblies.

What is the timing accuracy of CD4536BEG4 over temperature?

The CD4536BEG4 achieves ±0.5% timing accuracy over its full operating temperature range of –55°C to +125°C. This specification is measured under nominal supply conditions (V_DD = 10 V) with external R/C components selected per TI's recommended values. Accuracy remains stable due to matched internal resistor ratios and temperature-compensated Schmitt triggers - a key differentiator from generic 555-based solutions.

Can CD4536BEG4 operate in astable mode without external transistors?

Yes, the CD4536BEG4 can operate in astable (free-running oscillator) mode using only two external resistors and one capacitor per timer - no transistors or op-amps required. Its internal structure includes complementary CMOS inverters and feedback paths that form a relaxation oscillator. The SCHS083B datasheet provides exact RC calculation formulas and waveform diagrams confirming self-contained astable operation.