SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS

SDAS025C - APRIL 1982 - REVISED JANUARY 1995

features

• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• pnp Inputs Reduce dc Loading
• Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs)
• Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

description

These octal buffers and line drivers are designed to have the performance of the popular SN54ALS240A/SN74ALS240A series and, at the same time, offer a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed-circuit-board layout.

The 3-state control gate is a 2-input NOR such that if either output-enable (or ) input is high, all eight outputs are in the high-impedance state.

The SN74ALS540 provides inverted data. The ´ALS541 provide true data at the outputs.

The -1 versions of SN74ALS540 and SN74ALS541 are identical to the standard versions, except that the recommended maximum I_OL is increased to 48 mA. There is no -1 version of the SN54ALS541.

The SN54ALS541 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS540 and SN74ALS541 are characterized for operation from 0°C to 70°C.