Texas Instruments CD4098BE-NG

Overview

CD4098BE-NG 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. It features independent trigger and reset inputs per section, retriggerable operation, and complementary Q/Q̅ outputs. Used in pulse shaping, timing control, and debouncing circuits in industrial control systems.

For engineers reviewing the CD4098BE-NG datasheet, CD4098BE-NG pinout, CD4098BE-NG application, or CD4098BE-NG equivalent, key selection criteria include its dual retriggerable monostable architecture, wide V_DD tolerance, temperature-rated plastic DIP packaging, and compatibility with legacy CMOS logic families.

Technical Context

The CD4098BE-NG implements two independent CMOS monostable multivibrators, each with separate A/B trigger inputs, reset (R) input, and Q/Q̅ outputs. Timing is set externally via R-C networks connected to pins 1–2 (Section 1) and pins 13–14 (Section 2), supporting adjustable pulse widths from microseconds to seconds.

It uses standard CMOS input thresholds (V_IL ≤ 0.33V_DD, V_IH ≥ 0.67V_DD) and provides rail-to-rail output swing. The device is not latch-up protected per MIL-STD-883 but meets TI's standard CMOS ESD robustness (≥2 kV HBM).

Key Specifications

Pinout & Package

CD4098BE-NG is supplied in a 16-lead plastic dual-in-line package (PDIP-N), 0.3-inch body width, with standard through-hole mounting and 0.1-inch pin pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD4098BE-NG, CD4528BE offers simpler trigger logic but lacks retriggerability, while SN74LV123ADR delivers speed and low-voltage operation at the cost of industrial temperature support and voltage flexibility.

Availability

CD4098BE-NG is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4098BE-NG 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The CD4098B family was designed as a radiation-tolerant, high-reliability upgrade to legacy TTL monostables, targeting long-lifecycle applications in aerospace, defense, and critical infrastructure where supply chain stability and extended temperature performance are mandatory.

FAQ

What is the maximum operating frequency of the CD4098BE-NG?

The CD4098BE-NG does not operate at a fixed clock frequency-it is an asynchronous monostable multivibrator whose timing is determined solely by external R-C components. Its propagation delay is typically 100 ns at 15 V, enabling reliable pulse generation up to several MHz in retriggered mode, limited by minimum pulse width and recovery time. For precise timing, refer to the R-C calculation formulas in the TI CD4098B datasheet.

Is CD4098BE-NG pin-compatible with CD4098BE or CD4098BEE4?

Yes, CD4098BE-NG is pin-compatible with CD4098BE and CD4098BEE4, as all share the same PDIP-16 (N) package, identical pinout, and electrical specifications. The "-NG" suffix denotes a specific TI manufacturing lot or revision code but does not alter functionality, timing, or compatibility. Engineers may substitute CD4098BE-NG directly in designs using those variants.

Does CD4098BE-NG support retriggerable operation on both sections simultaneously?

Yes, CD4098BE-NG supports independent retriggerable operation on both monostable sections. Each section (pins 1–6 and pins 8–13) can be retriggered during its active output pulse, extending the Q output duration without resetting the internal timing cycle. This behavior is confirmed in the functional description and timing diagrams of the TI CD4098B datasheet (SCHS065C).

What is the recommended decoupling for CD4098BE-NG in high-noise environments?

TI recommends a 0.1 µF ceramic capacitor placed as close as possible to pins 7 (GND) and 14 (V_DD) of CD4098BE-NG, supplemented by a 10 µF tantalum or aluminum electrolytic capacitor near the power entry point. This dual-capacitor approach suppresses both high-frequency switching noise and low-frequency supply droop, ensuring stable monostable timing under load transients in industrial settings.

Can CD4098BE-NG drive a small relay directly?

CD4098BE-NG can drive a small signal relay (coil resistance ≥ 1.5 kΩ at 12 V) directly via its Q output, as it sources/sinks up to ±4.2 mA at 15 V. For higher-current relays, a discrete transistor buffer (e.g., 2N2222 or BSS138) is required. Always verify relay coil inrush current and use flyback diode protection to prevent output stage damage.