Texas Instruments CD40174BMT

Overview

CD40174BMT from Texas Instruments is a hex D-type flip-flop IC with common clock and master reset, implemented in CMOS technology for low-power operation. It features 6 independent edge-triggered D flip-flops, 16-pin SOIC package (D suffix), -55°C to +125°C operating temperature range, and TTL-compatible input thresholds. It is used in digital logic control, data latching, and register applications within industrial timing and sequencing circuits.

For engineers reviewing the CD40174BMT datasheet, CD40174BMT pinout, CD40174BMT application, or CD40174BMT equivalent, key selection considerations include its single-clock synchronous operation, non-inverting outputs, rail-to-rail voltage compatibility (3V–18V), and availability in RoHS-compliant SOIC packaging with Level-1 moisture sensitivity rating.

Technical Context

The CD40174BMT implements six identical D-type flip-flops sharing one common clock input (CP) and one active-low master reset (MR̅). Each stage operates on the rising edge of CP, with data transferred from Dn to Qn only when MR̅ is high.

Its CMOS architecture ensures static operation, low quiescent current (typically 20 nA at 5 V), and symmetrical propagation delays (t_PLH/t_PHL ≈ 100 ns at 10 V). Input hysteresis provides noise immunity, and output drive capability supports direct interfacing with TTL and other CMOS loads.

Key Specifications

Pinout & Package

CD40174BMT is supplied in a 16-pin SOIC (Small Outline Integrated Circuit) package, 3.9 mm body width, 1.2 mm max height, with gull-wing leads and RoHS-compliant NiPdAu plating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex D-type flip-flop applications.

Compared with CD40174BE and MC140174BCP, CD40174BMT offers surface-mount compatibility with fine-pitch layout efficiency and automated assembly readiness, while maintaining identical functional behavior and DC/AC electrical performance across the full temperature range.

Availability

CD40174BMT is available at Aetrix Electronics and suitable for industrial control logic, digital panel meter interfaces, motor driver sequencing, and legacy bus interface buffering requiring stable component supply and long-term lifecycle support.

Supply support for CD40174BMT 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 U.S.-based semiconductor company specializing in analog, embedded processing, and logic ICs, with leadership in industrial, automotive, and power management solutions.

The CD40174BMT belongs to TI's CD4000B-series CMOS logic family, designed for robust, low-power digital control in extended-temperature industrial environments where reliability and supply stability are critical.

FAQ

What is the maximum clock frequency supported by CD40174BMT?

The CD40174BMT supports a maximum clock frequency of approximately 5 MHz at V_DD = 10 V, based on its typical propagation delay of 100 ns. At lower supply voltages (e.g., 5 V), the maximum usable frequency decreases to ~2.5 MHz due to increased delay. System-level timing margins must account for setup/hold times and PCB trace skew when deploying CD40174BMT in high-speed synchronous designs.

Does CD40174BMT have Schmitt-trigger inputs?

No, CD40174BMT does not feature Schmitt-trigger inputs. Its inputs follow standard CMOS threshold specifications (V_IL = 0.3×V_DD, V_IH = 0.7×V_DD) without hysteresis. For noisy signal environments, external RC filtering or dedicated Schmitt-trigger buffers (e.g., CD4093B) should precede CD40174BMT inputs to prevent unintended clock or data transitions.

Can CD40174BMT operate from a 3.3 V supply?

Yes, CD40174BMT is fully specified to operate from 3 V to 18 V, including 3.3 V nominal supplies. At 3.3 V, it delivers valid logic levels, meets AC timing specifications (with adjusted propagation delay), and maintains rail-to-rail output swing. This makes CD40174BMT compatible with mixed-voltage systems where 3.3 V microcontrollers interface with legacy 5 V peripherals via level-tolerant logic.

Is CD40174BMT pin-compatible with CD40175B?

No, CD40174BMT is not pin-compatible with CD40175B. While both are hex D-type flip-flops, CD40175B uses complementary outputs (Q and Q̅ on adjacent pins) and different pin assignments for clock and reset. The CD40174BMT has all Q outputs grouped on pins 1–7 and 9–11, whereas CD40175B interleaves Q/Q̅ pairs. Board-level replacement requires layout revision.

What is the meaning of the "MT" suffix in CD40174BMT?

The "MT" suffix in CD40174BMT denotes Texas Instruments' standardized marking for the 16-pin SOIC (D) package variant with RoHS-compliant NiPdAu lead finish and tape-and-reel packaging (2,500 units per reel). It corresponds to the same device die and electrical specifications as CD40174BM and CD40174BM96, differing only in packaging format and reel configuration for automated assembly.