Texas Instruments CD74ACT175M

Overview

CD74ACT175M from Texas Instruments is a 16-pin SOIC quadruple positive-edge-triggered D-type flip-flop with asynchronous clear (CLR), complementary Q/Q̅ outputs per stage, ±24mA output drive, 114MHz max clock frequency at –40°C to +85°C, and TTL-compatible inputs-used in synchronous digital logic for register storage and pattern generation in industrial control and test equipment.

For engineers reviewing the CD74ACT175M datasheet, CD74ACT175M pinout, CD74ACT175M application, or CD74ACT175M equivalent, this page delivers verified package mapping (SOIC-16), functional timing parameters (t_su = 2ns, t_PLH = 3.0–10.5ns), absolute maximum ratings (V_CC = 6V), ESD robustness (±2000V HBM), and direct alternatives for register-level logic replacement.

Technical Context

The CD74ACT175M implements four independent D-type latches synchronized to the rising edge of CLK, each with active-low asynchronous CLR that forces Q = L and Q̅ = H regardless of clock state. Its CMOS ACT process delivers bipolar-equivalent speed with reduced power versus F/AS/S families.

Each flip-flop provides true and complement outputs (Q and Q̅) with balanced propagation delays (t_PLH ≈ t_PHL) and supports fanout to 15 F-family loads. Input clamping and SCR-latchup-resistant design ensure reliability in noisy industrial environments.

Key Specifications

Pinout & Package

CD74ACT175M is housed in a 16-pin SOIC (D) package measuring 9.9 mm × 6.0 mm (body), with gull-wing leads and RoHS-compliant NiPdAu plating. Moisture sensitivity level is Level-1 (unlimited floor life at ≤30°C/60% RH).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD74ACT175M, SN74ACT175D offers assured supply continuity and identical performance, while 74AC175PC trades 14 MHz speed for ~75% lower static power - making the former ideal for new industrial designs and the latter niche for ultra-low-power edge sensing.

Availability

CD74ACT175M is available at Aetrix Electronics and suitable for industrial control registers, test equipment pattern generators, serial-to-parallel shift registers, and digital audio sample buffers requiring stable component supply across extended temperature ranges.

Supply support for CD74ACT175M 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 delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

The CD74ACT175M belongs to TI's legacy CD74ACT high-speed CMOS logic family, engineered for TTL-compatible interfacing with bipolar speed and CMOS power efficiency in ruggedized digital control systems.

FAQ

What is the maximum clock frequency supported by CD74ACT175M?

The CD74ACT175M supports a maximum clock frequency of 114 MHz over the –40°C to +85°C operating range, as specified in the switching characteristics table under recommended conditions (V_CC = 5 V ± 0.5 V, C_L = 50 pF). At the full –55°C to +125°C range, f_max remains 114 MHz, confirming consistent high-speed operation across its full temperature envelope. This makes CD74ACT175M suitable for demanding timing-critical register applications.

Does CD74ACT175M have complementary outputs for each flip-flop?

Yes, CD74ACT175M provides true (Q) and complement (Q̅) outputs for all four internal D-type flip-flops - pins 2/3 (1Q/1Q̅), 6/7 (2Q/2Q̅), 10/11 (3Q/3Q̅), and 14/15 (4Q/4Q̅). This dual-rail output architecture eliminates the need for external inverters in applications such as toggle circuits, differential bus driving, and synchronous enable logic - directly reducing bill-of-materials and layout complexity in the CD74ACT175M implementation.

What is the recommended bypass capacitor for CD74ACT175M?

Texas Instruments recommends a 0.1 µF ceramic capacitor placed as close as possible to the V_CC (pin 16) and GND (pin 8) pins of CD74ACT175M to suppress high-frequency switching noise. For systems with multiple power domains or stringent EMI requirements, paralleling a 1 µF tantalum or ceramic capacitor is acceptable. This decoupling strategy is validated in TI's layout guidelines and ensures stable operation of CD74ACT175M under fast edge-rate clocking and heavy capacitive loads.

Is CD74ACT175M pin-compatible with CD74ACT175E (PDIP package)?

Yes, CD74ACT175M (SOIC-16) and CD74ACT175E (PDIP-16) share identical pin numbering, pin functions, and electrical specifications - including identical CLR, CLK, D, Q, and Q̅ assignments. The only difference is package type and thermal resistance (R_θJA = 106.6°C/W for SOIC vs 67°C/W for PDIP). Therefore, CD74ACT175M can replace CD74ACT175E on the same PCB footprint with appropriate reflow profile adjustments - a key advantage in upgrading CD74ACT175M into space-constrained industrial designs.

What is the absolute maximum supply voltage for CD74ACT175M?

The absolute maximum supply voltage (V_CC) for CD74ACT175M is 6 V, as stated in Section 5.1 Absolute Maximum Ratings. Operation above this voltage - even momentarily - risks permanent damage. The recommended operating range is 4.5 V to 5.5 V, ensuring reliable parametric performance and longevity. This 6 V ceiling provides margin for transient spikes but must not be used for sustained operation; all system-level power design for CD74ACT175M must enforce strict 5.5 V regulation.