HD74ALVCH162244

HD74ALVCH162244 16-bit Buffers / Drivers with 3-state Outputs ADE-205-173A (Z) Preliminary 2nd. Edition January 1998 Description The HD74ALVCH162244 is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus oriented receivers and transmitters. The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides true outputs and symmetrical active-low output-enable ( OE) inputs. To ensure the high impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current sinking capability of the driver. Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level. All outputs, which are designed to sink up to 12 mA, include 26 Ω resistors to reduce overshoot and undershoot. Features VCC = 2.3 V to 3.6 V Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) High output current ±12 mA (@VCC = 3.0 V) Bus hold on data inputs eliminates the need for external pullup / pulldown resistors All outputs have equivalent 26 Ω series resistors, so no external resistors are required. HD74ALVCH162244 Function Table Inputs OE L L H H : High level L : Low level X : Immaterial Z : High impedance A H L X H L Z Output Y 2 HD74ALVCH162244 Pin Arrangement 1OE 1 1Y1 2 1Y2 3 GND 4 1Y3 5 1Y4 6 VCC 7 2...