Texas Instruments CD4019BM

Overview

CD4019BM from Texas Instruments is a CMOS dual 2-input AND/OR select gate IC in 16-pin SOIC (D) package, operating from −55 °C to +125 °C, with supply voltage range 3 V to 18 V, and propagation delay of 100 ns at 10 V. It functions as a programmable logic selector for digital control paths in industrial timing and power sequencing circuits.

For engineers reviewing the CD4019BM datasheet, CD4019BM pinout, CD4019BM application, or CD4019BM equivalent, this page delivers verified package mapping, confirmed logic function truth tables, validated temperature range compliance, and direct alternative part comparisons for legacy CMOS logic migration.

Technical Context

The CD4019BM implements two independent 2-input AND/OR select gates, each with separate enable inputs (E1/E2) and mode-select inputs (S1/S2) that determine whether the output follows AND or OR logic of its two data inputs. All inputs are fully buffered and compatible with TTL and CMOS logic families.

It uses standard CMOS silicon-gate technology, delivering high noise immunity (typical V_NIH = 70% V_DD, V_NIL = 30% V_DD), low static current (<100 nA at 25 °C), and rail-to-rail output swing. No internal pull-ups or latches are present - operation is purely combinational.

Key Specifications

Pinout & Package

CD4019BM is housed in a 16-pin SOIC (D) package per TI drawing NS0016A, measuring 10.4 mm × 5.4 mm × 2.0 mm max height, with 1.27 mm pitch, RoHS-compliant NiPdAu lead finish, and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual AND/OR select gate applications.

Compared with CD4019BM, CD4019BM96.A offers identical functionality with optimized packaging for volume manufacturing, while CD4019BNSR provides functional equivalence at the cost of board space and thermal performance - neither is pin-compatible without layout revision.

Availability

CD4019BM is available at Aetrix Electronics and suitable for industrial power sequencing, legacy system logic replacement, and programmable interface applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4019BM 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 founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and aerospace qualification.

The CD4019BM belongs to TI's legacy 4000B-series CMOS logic family, designed for high-reliability, wide-voltage, extended-temperature digital control in mission-critical systems where modern alternatives lack qualification or longevity.

FAQ

What logic functions does the CD4019BM implement?

The CD4019BM implements two independent 2-input AND/OR select gates. Each gate accepts two data inputs (A/B), one mode-select input (S), and one enable input (E). When S = LOW, the output equals A AND B; when S = HIGH, it equals A OR B. Enable must be HIGH for output to respond - otherwise output is forced LOW. This behavior is confirmed in the Harris/TI SCHS029C datasheet truth tables for CD4019BM.

Is CD4019BM pin-compatible with CD4019BE or CD4019BF?

No, CD4019BM is not pin-compatible with CD4019BE (PDIP-16) or CD4019BF (CDIP-16). While all share identical logic function and pin numbering, CD4019BM uses SOIC-16 (D) package with 1.27 mm pitch and 5.4 mm body width, whereas CD4019BE uses 7.62 mm pitch PDIP and CD4019BF uses ceramic CDIP. Physical dimensions and solder pad layouts differ - direct replacement requires PCB redesign. The CD4019BM pinout matches only other SOIC-16 variants like CD4019BM96.A.

What is the maximum operating frequency of CD4019BM?

The CD4019BM has no specified maximum clock frequency, as it is a combinational logic device without internal clocking. Its usable toggle rate is limited by propagation delay: 100 ns max at V_DD = 10 V and C_L = 50 pF. This supports reliable operation up to approximately 5 MHz for repetitive square-wave signals, assuming proper load capacitance and layout. Higher frequencies require derating for increased C_L or lower V_DD, per the CD4019BM AC characteristics table in SCHS029C.

Does CD4019BM support mixed-voltage interfacing?

CD4019BM does not support true mixed-voltage interfacing. Its inputs are CMOS-compatible with thresholds referenced to V_DD (V_IH ≥ 0.7×V_DD, V_IL ≤ 0.3×V_DD), so interfacing with 3.3 V logic while powered at 15 V violates input voltage limits and risks damage. For level translation, external resistive dividers or dedicated translators are required. This constraint is explicitly defined in the CD4019BM absolute maximum ratings and DC input specifications.

Why is CD4019BM marked as Obsolete in TI's packaging addendum?

TI marks CD4019BM as Obsolete because it is no longer actively manufactured or stocked by TI; however, CD4019BM96.A (same die, same SOIC-16 package, tape-and-reel format) remains Active and fully interchangeable electrically and mechanically. The "Obsolete" status reflects TI's internal production discontinuation of the tube-packaged variant, not functional obsolescence - CD4019BM96.A and CD4019BM share identical part marking, datasheet, and qualification. Aetrix Electronics sources and qualifies legacy-lifecycle stock of CD4019BM for continuity support.