Texas Instruments CD74ACT151M96G4

Overview

CD74ACT151M96G4 from Texas Instruments is a high-speed CMOS 8-line to 1-line data selector/multiplexer with TTL-compatible inputs, ±24mA output drive, and dual complementary outputs (Y and W). It operates across –40°C to +85°C at 4.5V–5.5V supply, enabling Boolean function generation and parallel-to-serial conversion in industrial control logic and digital signal routing.

For engineers reviewing the CD74ACT151M96G4 datasheet, CD74ACT151M96G4 pinout, CD74ACT151M96G4 application, or CD74ACT151M96G4 equivalent, key selection criteria include its 16-pin SOIC package, strobe-controlled enable logic, balanced propagation delays, and ESD-hardened CMOS process suitable for noise-sensitive embedded systems.

Technical Context

The CD74ACT151M96G4 implements asynchronous 8:1 multiplexing using three address inputs (A, B, C) to select one of eight data sources (D0–D7), with Y output reflecting the selected input and W providing its logical inverse. Strobe (G) forces Y low and W high when high, overriding all address and data inputs.

Its TTL-compatible inputs accept standard bipolar logic thresholds (VIH ≥ 2V, VIL ≤ 0.8V), while CMOS push-pull outputs deliver symmetrical sourcing/sinking capability up to ±24mA per pin-supporting fanout to 15 F-series devices and driving 50pF loads within specified timing windows.

Key Specifications

Pinout & Package

CD74ACT151M96G4 is packaged in a 16-pin SOIC (D package), measuring 8.65mm × 6mm with body size 8.65mm × 3.9mm. The thermal pad is not present in this variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8:1 multiplexer applications.

Compared with SN74ACT151N and CD74HC151M96, CD74ACT151M96G4 delivers optimal balance of speed, drive strength, and industrial temperature support in surface-mount form-making it ideal for volume production of ruggedized digital controllers where SOIC packaging and 24mA drive are design requirements.

Availability

CD74ACT151M96G4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, digital test equipment signal routing, legacy system logic interface, and Boolean function generation requiring stable component supply and long-term manufacturability.

Supply support for CD74ACT151M96G4 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 innovation in high-reliability digital ICs.

The CDx4ACT151 product line was designed for high-speed, noise-immune data routing in industrial automation, test instrumentation, and military-grade logic systems-emphasizing TTL compatibility, latchup immunity, and wide-temperature operation.

FAQ

What is the maximum operating frequency supported by CD74ACT151M96G4?

The CD74ACT151M96G4 does not specify a maximum clock frequency, but its worst-case propagation delay (tPHL/tPLH) is 15.5ns for D→Y at –55°C to +125°C with 50pF load. This supports reliable operation up to approximately 65MHz in well-designed 50pF systems. Actual usable frequency depends on layout, load capacitance, and supply stability-TI recommends limiting output load to ≤50pF for full datasheet compliance. CD74ACT151M96G4 performance remains consistent across its rated –40°C to +85°C range.

Does CD74ACT151M96G4 require external pull-up or pull-down resistors on unused inputs?

Yes, all unused inputs of CD74ACT151M96G4-including A, B, C, D0–D7, and G-must be terminated to either VCC or GND to prevent floating states that cause excessive power consumption, oscillation, or reliability degradation. TI explicitly mandates this in Section 4.3 of the datasheet. A 10kΩ resistor is recommended for pull-up/pull-down if the input may transition later; direct connection is acceptable for permanently fixed signals. CD74ACT151M96G4's TTL-compatible inputs are especially sensitive to slow or undefined transitions.

Can CD74ACT151M96G4 drive a 74F-series logic input directly?

Yes, CD74ACT151M96G4 can directly drive 74F-series inputs: its ±24mA output drive exceeds the 74F fanout requirement (–1mA high / +20mA low), and its VOH ≥ 3.7V at –24mA and VOL ≤ 0.5V at 24mA meet 74F VIH(min) = 2V and VIL(max) = 0.8V specifications. The CD74ACT151M96G4 also matches 74F timing margins with sub-16ns delays. No level-shifting or buffering is needed for interoperability with 74F devices under recommended operating conditions.

What is the purpose of the W output on CD74ACT151M96G4?

The W output on CD74ACT151M96G4 is the logical inverse of the Y output-when Y = HIGH, W = LOW, and vice versa-enabling simultaneous access to true and complemented data without external inverters. This is critical in applications like differential bus drivers, synchronous enable/disable logic, or parity generation where both polarities are needed. W behaves identically to Y under strobe control: when G = HIGH, both Y and W are forced to fixed states (Y = LOW, W = HIGH), regardless of address or data inputs. CD74ACT151M96G4 uses this dual-output architecture to reduce component count and propagation skew in timing-sensitive designs.

Is CD74ACT151M96G4 RoHS compliant and lead-free?

Yes, CD74ACT151M96G4 is RoHS compliant and lead-free. Per Texas Instruments' official packaging and orderable information (SCHS338B, May 2025 revision), the M96G4 suffix denotes a green, lead-free, halogen-free SOIC package meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements. The device carries TI's standard RoHS marking and is qualified for Pb-free reflow soldering profiles up to 260°C peak. CD74ACT151M96G4 documentation confirms full compliance with EU Directive 2011/65/EU and China RoHS II.