74ALS648

INTEGRATED CIRCUITS 74ALS646/74ALS646–1 74ALS648/74ALS648–1 Transceiver/register Product specification IC05 Data Handbook 1991 Feb 08 Philips Semiconductors Philips Semiconductors Product specification Transceiver/register 74ALS646/646-1 74ALS648/648-1 FEATURES 74ALS646/74ALS646-1 74ALS648/74ALS648-1 Octal transceiver/register, non-inverting (3-State) Octal transceiver/register, inverting (3-State) TYPE 74ALS646/646-1 74ALS648/648-1 TYPICAL fMAX 140MHz 140MHz TYPICAL SUPPLY CURRENT (TOTAL) 48mA 54mA Combines one chip 74ALS245 and two 74ALS374 type functions in Independent registers for A and B buses Multiplexed real-time and stored data Choice of non-inverting and inverting data paths 3-State outputs The -1 version sink 48mA IOL within the ±5% VCC range DESCRIPTION The 74ALS646/74ALS646-1 and 74ALS648/74ALS648-1 transceivers/registers consist of bus transceiver circuits with 3-State outputs, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or the internal registers. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes High. Output enable (OE) and direction (DIR) and select (SAB, SBA) pins are provided for bus management. The 74ALS646-1 and 74ALS648-1 will sink 48mA if the VCC is limited to 5.0V ±0.25V. ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C 74ALS646N, 74ALS646-1N, 74ALS648N, 74ALS648-1N 74ALS64...