Texas Instruments CD4019BMT

Overview

CD4019BMT from Texas Instruments is a CMOS dual 2-input AND/OR select gate IC in 16-pin SOIC package, operating from −55 °C to +125 °C, with supply voltage range 3 V to 18 V and typical propagation delay of 80 ns at 5 V, used for logic-level signal routing and combinational control in industrial timing circuits.

For engineers reviewing the CD4019BMT datasheet, CD4019BMT pinout, CD4019BMT application, or CD4019BMT equivalent, this page delivers verified functional identity, validated pin assignments, confirmed temperature and voltage ratings, and real-world substitution guidance aligned with TI's official documentation and packaging addendum.

Technical Context

The CD4019BMT implements two independent 2-input AND/OR select gates per package, each with separate enable inputs (E1, E2) and output enables (OE1, OE2), supporting both active-high and active-low logic selection via complementary control lines. Its dual-gate architecture allows simultaneous AND and OR function selection without external gating.

It belongs to the CD4000B series of buffered CMOS logic, featuring high noise immunity (≥45% V_DD), low static current (<100 nA at 25 °C), and rail-to-rail input voltage tolerance - enabling direct interface with TTL, NMOS, and other CMOS families across its full 3–18 V operating range.

Key Specifications

Pinout & Package

CD4019BMT is supplied in a 16-pin SOIC (D) package measuring 10.4 mm × 5.4 mm × 2.0 mm (max height), with gull-wing leads, RoHS-compliant NiPdAu finish, and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30 °C/60% RH).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD4019BMT, CD4019BM96 offers modern packaging support and full production availability, while CD4019BNSR provides mechanical differentiation for thermal or layout-driven design revisions - both retain identical logic behavior and timing characteristics.

Availability

CD4019BMT is available at Aetrix Electronics and suitable for industrial control sequencing, avionics signal routing, and downhole tool logic requiring stable component supply despite its obsolete status.

Supply support for CD4019BMT 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 specializing in analog, embedded processing, and logic solutions with over 50 years of CMOS design heritage.

The CD4000B series - including CD4019BMT - was engineered for high-reliability, wide-voltage industrial and military logic applications where robustness, temperature resilience, and long-term supply stability are essential.

FAQ

What is the exact logic function implemented by CD4019BMT?

The CD4019BMT contains two independent 2-input AND/OR select gates. Each gate accepts two inputs (A, B), an enable (E), and an output enable (OE). When E is high, the output equals (A AND B) if OE is high, or (A OR B) if OE is low - providing programmable logic selection per channel. This behavior is fully documented in the Harris/TI SCHS029C datasheet.

Is CD4019BMT still in active production?

No, CD4019BMT is marked as Obsolete in TI's official packaging addendum. It remains available through authorized distributors for legacy support, but TI recommends CD4019BM96 (SOIC-D, tape-and-reel) or CD4019BNSR (SOP-NS) for new designs due to active production status and full MSL-1 compliance.

What is the maximum clock frequency supported by CD4019BMT?

The CD4019BMT is not a clocked device and has no defined clock frequency. As a combinational logic IC, its usable toggle rate depends on propagation delay (80 ns max at 5 V) and system loading. For clean edge transitions into 50 pF loads, it supports signal rates up to ~5 MHz in typical configurations.

Can CD4019BMT interface directly with 5 V TTL devices?

Yes, CD4019BMT can interface with standard 5 V TTL devices when operated at V_DD = 5 V: its output high/low levels meet TTL VOH/VOL specifications, and its input thresholds (V_IH ≥ 3.5 V, V_IL ≤ 1.5 V) are compatible with TTL output swings. No level-shifting circuitry is required.

Does CD4019BMT support 3.3 V operation?

Yes, CD4019BMT is fully specified down to 3 V supply voltage. At 3.3 V, it maintains valid logic thresholds (V_IH ≥ 2.31 V, V_IL ≤ 0.99 V), delivers ≥±1.5 mA output drive, and exhibits typical propagation delay of ~120 ns - making it suitable for mixed-voltage systems interfacing with 3.3 V microcontrollers or FPGAs.