Texas Instruments SN74AHCT1G00DCKR

Overview

SN74AHCT1G00 from Texas Instruments is a single 2-input positive-NAND gate IC operating in 4.5–5.5 V logic systems, delivering 7.1 ns max propagation delay at 5 V, ±8-mA output drive, TTL-compatible inputs, and 10-μA max ICC - used for bus interface logic in compact portable electronics requiring low-power, noise-resilient signal inversion.

For engineers reviewing the SN74AHCT1G00 datasheet, SN74AHCT1G00 pinout, SN74AHCT1G00 application, or SN74AHCT1G00 equivalent, this page provides verified functional identity, SC-70 (DCK) package mapping, confirmed 5-pin terminal roles, real-world timing and drive specifications, and two validated alternative parts for 5-V NAND logic replacement scenarios.

Technical Context

The SN74AHCT1G00 implements Y = A × B (positive-logic NAND) using CMOS technology with TTL-voltage compatible inputs, enabling direct interfacing between 3.3-V and 5-V logic domains. Its input structure remains high-impedance when VCC = 0 V, supporting hot-insertion safety.

It operates across –40°C to +125°C with guaranteed switching performance under 5 V ±0.5 V supply, exhibits 10.5 pF typical power dissipation capacitance, and maintains latch-up immunity exceeding 250 mA per JESD17 - making it suitable for industrial-grade embedded control and peripheral interface functions.

Key Specifications

Pinout & Package

SN74AHCT1G00 is packaged in SC-70 (DCK), a 5-pin surface-mount package measuring 2.00 mm × 1.25 mm with 0.65-mm lead pitch and maximum height of 1.1 mm - optimized for space-constrained PCB layouts in portable and wearable devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NAND gate applications.

Compared with SN74AHCT1G00, SN74LVC1G00DCKR offers broader voltage support but weaker 5-V drive, while MC74VHC1G00DTT1G lacks guaranteed TTL input thresholds - making SN74AHCT1G00 the preferred choice for robust 5-V system integration with legacy interface requirements.

Availability

SN74AHCT1G00 is available at Aetrix Electronics and suitable for IP phones, notebook PCs, printers, and access control systems requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant SC-70 packaging.

Supply support for SN74AHCT1G00 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 decades of expertise in high-reliability interface and signal-path ICs.

The SN74AHCT1G00 belongs to TI's AHCT logic family - engineered specifically for 5-V systems needing TTL-compatible inputs, low power, and robust noise immunity in space- and power-constrained applications.

FAQ

What logic function does the SN74AHCT1G00 implement?

The SN74AHCT1G00 implements a single 2-input positive-NAND Boolean function (Y = A × B) in CMOS technology. It delivers true NAND behavior with active-high inputs and active-low output, fully compliant with standard TTL logic conventions. The SN74AHCT1G00 is not an inverter, NOR, or AND gate - its truth table explicitly defines H/H → L, L/X → H, X/L → H operation, and it is specified exclusively for this function in TI's official documentation.

Is the SN74AHCT1G00 compatible with 3.3-V input signals?

Yes, the SN74AHCT1G00 features TTL-voltage compatible inputs, meaning it reliably recognizes 3.3-V logic-high signals as valid VIH (minimum 2.0 V) and 0-V as valid VIL (maximum 0.8 V). This allows direct connection to 3.3-V microcontrollers or FPGAs without level shifters. The SN74AHCT1G00 maintains this compatibility across its full –40°C to +125°C operating range and 4.5–5.5 V supply window.

What package type is used for the SN74AHCT1G00DCKR variant?

The SN74AHCT1G00DCKR uses the SC-70 (DCK) package: a 5-pin, surface-mount plastic package measuring 2.00 mm × 1.25 mm with 0.65-mm lead pitch and maximum height of 1.1 mm. This package is distinct from the SOT-23 (DBV) variant and is documented in TI's official package drawings (DCK0005A). The SN74AHCT1G00DCKR marking "BA3" appears on the top surface per TI's orderable addendum.

Does the SN74AHCT1G00 require external pull-up or pull-down resistors on unused inputs?

Yes - all unused inputs of the SN74AHCT1G00 must be held at a defined logic level (VCC or GND) to prevent floating states that cause increased ICC, erratic output behavior, or ESD susceptibility. TI's datasheet explicitly mandates this in Section 5.3 and references application report SCBA004. Leaving inputs unconnected is not permitted; the SN74AHCT1G00 does not include internal weak pull-ups or pull-downs.

What is the maximum output current rating for the SN74AHCT1G00?

The SN74AHCT1G00 is rated for ±8 mA DC output current per pin (IOL = 8 mA, IOH = –8 mA) under recommended operating conditions at 5 V. Absolute maximum ratings allow ±25 mA per output, but sustained operation above ±8 mA risks violating VOH/VOL specs and increasing junction temperature. The SN74AHCT1G00 total device current limit is ±50 mA across all pins combined, as stated in Section 5.1.