HD74LS251P Datasheet | Renesas

features a strobe-controlled 3-state output. The strobe must be at a low logic level to enable this device. The 3-state outputs permit a number of outputs to be connected to a mon bus. When the strobe input is high, both outputs are in a high-impedance state in which both the upper and lower transistors of each totem-pole output are off, and the output neither drives nor loads the bus significantly. When the strobe is low, the outputs are activated and operate as standard TTL totem-pole outputs. To minimize the possibility that two outputs will attempt to take a mon bus to opposite logic levels, the output control circuitry is designed so that the average output disable time is shorter than the average output enable time. Features - Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation DILP-16 pin PRDP0016AE-B (DP-16FV) HD74LS251FPEL SOP-16 pin (JEITA) PRSP0016DH-B (FP-16DAV) Note: Please consult the sales office for the above package availability. Taping Abbreviation (Quantity) - EL (2,000 pcs/reel) Pin Arrangement 22 Data Inputs Y5 Outputs W6 Strobe 7 GND 8 D3 D2 D4 D1 D5 D0 D6 D7...