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 gate such that, if either output-enable (OE1\ or OE2\) 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 IOL is increased to 48 mA. There is no 1 version of the SN54ALS541.
|Part number||Order||Technology Family||VCC (Min) (V)||VCC (Max) (V)||Channels (#)||IOL (Max) (mA)||IOH (Max) (mA)||ICC (uA)||Input type||Output type||Features||Data rate (Mbps)||Rating||Operating temperature range (C)||Package Group|
||ALS||4.75||5.25||8||48||-15||25000||Bipolar||3-State||Very high speed (tpd 5-10ns)||150||Catalog||0 to 70||
PDIP | 20
SOIC | 20
SO | 20