Texas Instruments SN74ABT162500DLR

18-Bit Universal Bus Transceivers With 3-State Outputs 56-SSOP -40 to 85
GULL WING INDEPENDENT CONTROL Surface Mount ROHS3Compliant Universal Bus Transceiver -40C~85C 32mA 64mA; 12mA 12mA 4.5V~5.5V 2.79mm
Transceiver Logic IC; Logic Family:ABT; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Package/Case:56-SSOP; No. of Pins:56; Operating Temperature Range:-40°C to 85°C; Input Type:TTL; Leaded Process Compatible:Yes ;RoHS Compliant: Yes
These 18-bit universal bus transceivers combineD-type latches and D-type flip-flops to allow data flow in transparent, latched, and clocked modes. Data flow in each direction is controlled by output-enable (OEAB and OEBA), latch-enable(LEAB and LEBA), and clock (CLKAB and CLKBA) inputs. For A-to-B data flow, the device operates in the transparent mode when LEAB is high. When LEAB is low, th Ea data is latched if CLKAB is held at a high or low logic level. If LEAB is low, the A data is stored in the latch/flip-flop on the high-to-low transition of CLKAB. Output-enable OEAB is active high. When OEAB is high,the outputs are active. When OEAB is low, the outputs are in the high-impedance state. Data flow for B to A is similar to that of A to B but uses OEBA, LEBA, and CLKBA. The output enables are complementary (OEAB is active high and OEBA is active low). The B-port outputs, which are designed to source or sink up to 12 mA, include equivalent 25-Omega series resistors to reduce overshoot and undershoot.