Texas Instruments CD4098BEE4

Overview

CD4098BEE4 from Texas Instruments is a dual monostable multivibrator IC in 16-pin PDIP package, operating from -55°C to +125°C with supply voltage range 3 V to 18 V, featuring independent A- and B-trigger inputs, reset capability, and complementary Q/Q̅ outputs per section-used for precision timing, pulse shaping, and debouncing in industrial control logic.

For engineers reviewing the CD4098BEE4 datasheet, CD4098BEE4 pinout, CD4098BEE4 application, or CD4098BEE4 equivalent, this device supports TTL/CMOS-compatible triggering, offers guaranteed propagation delay stability across temperature, and maintains consistent output pulse width control via external RC networks-key considerations for deterministic edge-sensitive timing circuits.

Technical Context

The CD4098BEE4 implements two independent retriggerable monostable multivibrators in a single IC. Each section accepts active-low A- and B-trigger inputs with separate reset (R) control, and produces non-inverted (Q) and inverted (Q̅) outputs. Timing is set externally via resistor-capacitor networks connected to C_EXT and R_EXT pins.

It uses standard CMOS silicon-gate technology, ensuring low static power consumption (<1 µA at 5 V), high noise immunity (typical V_NIH = 70% V_DD), and compatibility with both CMOS and TTL input logic families. The device is not internally compensated and requires external timing components for each monostable stage.

Key Specifications

Pinout & Package

CD4098BEE4 is supplied in a 16-lead plastic dual-in-line package (PDIP-N), 0.300-inch body width, with standard through-hole mounting and 0.100-inch lead pitch. Pin 1 is located at the left end of the top row, identified by a notch or dot marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar monostable multivibrator applications.

Compared with CD4098BEE4, CD4528BE provides non-retriggerable timing with higher voltage tolerance but lower speed, while MC14528BCP delivers identical retriggerable behavior and temperature range with RoHS-compliant packaging - making it the most direct functional and mechanical substitute.

Availability

CD4098BEE4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and legacy system repair requiring stable component supply and long-term obsolescence mitigation.

Supply support for CD4098BEE4 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 leader founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and aerospace qualification programs.

The CD4098B series belongs to TI's legacy CMOS logic family designed for robust, low-power timing and waveform generation in harsh-environment applications where reliability and wide temperature operation are critical.

FAQ

What is the maximum recommended supply voltage for CD4098BEE4?

The CD4098BEE4 is rated for operation up to 18 V DC. Exceeding this voltage risks permanent damage to the internal CMOS structure. For reliable long-term use, maintain V_DD within 3 V to 18 V, with 15 V being the practical upper limit for sustained operation at elevated temperatures. The CD4098BEE4 datasheet specifies absolute maximum ratings and derating curves for extended thermal conditions.

Does CD4098BEE4 support retriggerable operation on both monostable sections?

Yes, the CD4098BEE4 supports fully independent retriggerable operation on both Section 1 and Section 2. A new trigger applied during an active output pulse will restart the timing cycle from zero, extending the total Q-output duration. This behavior is confirmed in the functional description and timing diagrams of the official TI SCHS065C datasheet for CD4098BEE4.

Can CD4098BEE4 drive LEDs directly without a current-limiting transistor?

The CD4098BEE4 can source or sink up to ±4.2 mA per output at 10 V, which is sufficient to drive low-current indicator LEDs (e.g., 2 mA @ 1.8 V forward voltage) when used with a series current-limiting resistor. However, for higher-brightness or multi-LED loads, an external buffer or transistor is recommended to avoid exceeding output drive limits and ensure stable timing performance.

Is CD4098BEE4 pin-compatible with CD4098BE or CD4098BF?

Yes, CD4098BEE4 shares identical pinout and electrical functionality with CD4098BE (plastic DIP) and CD4098BF (ceramic DIP). All three variants use the same 16-pin PDIP/CDIP footprint and internal logic design. The suffix difference reflects packaging material and lead finish only - CD4098BEE4 uses NIPDAU RoHS-compliant leads, while CD4098BF uses SNPB.

What is the typical propagation delay from trigger to Q output for CD4098BEE4?

The typical propagation delay from A- or B-input trigger to Q output transition is 100 ns at V_DD = 10 V and T_A = 25°C, as specified in the CD4098BEE4 datasheet timing characteristics table. This value increases to approximately 200 ns at V_DD = 5 V and decreases slightly at higher voltages up to 15 V - critical for synchronizing with fast microcontroller interrupts or logic gates.