Texas Instruments SN74LVC828DW

Overview

SN74LVC828DW from Texas Instruments is a 10-bit inverting buffer/driver with dual 3-state enable inputs (OE1, OE2) and 24-pin SOIC packaging, operating from 1.65 V to 3.6 V supply. It supports mixed-mode 5-V input/3.3-V VCC operation, delivers 6.7 ns max propagation delay at 3.3 V, and provides ±24 mA output drive for wide data bus interfacing in industrial control backplanes.

For engineers reviewing the SN74LVC828DW datasheet, SN74LVC828DW pinout, SN74LVC828DW application, or SN74LVC828DW equivalent, key selection criteria include its dual active-low 3-state control logic, Ioff partial-power-down capability, 5.5-V-tolerant inputs, low ground bounce (<0.8 V), and compatibility with 3.3-V/5-V system-level voltage translation.

Technical Context

The SN74LVC828DW implements a 10-channel inverting buffer architecture with two independent active-low 3-state enable inputs feeding a shared AND gate controlling all outputs. Its Ioff circuitry disables outputs during power-down to prevent backflow current, and its input structure accepts voltages up to 5.5 V regardless of VCC level.

This device is specified for operation across –40°C to +85°C, supports 30-pF load-driven switching at 10 MHz, and meets JESD 17 latch-up immunity (>250 mA) and JESD 22 ESD ratings (2000-V HBM, 200-V MM, 1000-V CDM).

Key Specifications

Pinout & Package

SN74LVC828DW uses a 24-pin SOIC (DW) package with 0.300-inch body width, JEDEC MS-013 compliant footprint, and RoHS-compliant Cu/NiPdAu lead finish. Thermal resistance θJA is 46°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit inverting buffer applications.

Compared with SN74LVC828DW, SN74LVC827ADW preserves signal polarity at identical performance and compatibility, while 74LVT162244DGGR expands channel count and drive at the cost of voltage flexibility and pin compatibility - making SN74LVC828DW optimal for 10-bit mixed-voltage bus isolation with strict polarity inversion requirements.

Availability

SN74LVC828DW is available at Aetrix Electronics and suitable for industrial backplane interfaces, data acquisition systems, hot-swappable module control, and embedded power sequencing applications requiring stable component supply and long-term manufacturability.

Supply support for SN74LVC828DW 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 SN74LVC828DW belongs to TI's LVC logic family, engineered for low-voltage, high-speed, mixed-signal interface applications in space-constrained industrial and computing systems.

FAQ

What is the function of OE1 and OE2 on the SN74LVC828DW?

The SN74LVC828DW uses OE1 and OE2 as active-low inputs to a 2-input AND gate controlling all ten outputs. Both OE1 and OE2 must be low for outputs Y1–Y10 to drive inverted data; if either is high, all outputs enter high-impedance state. This dual-enable structure prevents unintended output activation during power-up or signal glitches, and the SN74LVC828DW datasheet specifies that OE pins tolerate up to 5.5 V regardless of VCC level.

Can the SN74LVC828DW interface 5-V logic signals with a 3.3-V supply?

Yes, the SN74LVC828DW supports mixed-mode operation: its inputs accept voltages up to 5.5 V while operating from a 1.65–3.6 V VCC supply. This allows direct connection of 5-V microcontrollers or legacy peripherals to a 3.3-V system bus without external level shifters. The SN74LVC828DW maintains full timing and drive specifications under this condition, as confirmed in TI's SCAS347H datasheet section "Supports Mixed-Mode Signal Operation."

Does the SN74LVC828DW support partial power-down operation?

Yes, the SN74LVC828DW integrates Ioff circuitry that disables outputs and limits off-state current to ±10 µA when VCC = 0 V, even if input or output voltages reach 5.5 V. This feature protects downstream components during hot-swap events or staged power sequencing. The SN74LVC828DW is fully specified for partial-power-down per JESD78, and its Ioff behavior is validated across –40°C to +85°C.

What is the maximum capacitive load the SN74LVC828DW can drive reliably?

The SN74LVC828DW is characterized for 30-pF loads in its switching specifications, with tpd = 6.7 ns and tdis = 6.7 ns measured at 3.3 V using a 30-pF test load. While it can drive higher capacitance, signal integrity degrades beyond this point - rise/fall times increase and ground bounce rises. For reliable operation, keep total trace + load capacitance ≤30 pF per output, or use series termination. The SN74LVC828DW's Co parameter is 7 pF (typical), confirming low intrinsic output capacitance.

Is the SN74LVC828DW pin-compatible with other 24-pin logic buffers?

No - the SN74LVC828DW has a unique 10-bit inverting buffer pinout with dual OE inputs and non-standard A/Y mapping (A1–A10 on pins 1–10, Y1–Y10 on pins 13–22). It is not pin-compatible with SN74LVC827ADW (non-inverting) despite identical package and pin count, due to different internal logic and OE implementation. Always verify pin functions against the SN74LVC828DW-specific top-view diagram in the TI datasheet before PCB layout.