74ABTH16821A Datasheet | NXP Semiconductors

FEATURES - 20-bit positive-edge triggered register - Multiple VCC and GND pins minimize switching noise - Live insertion/extraction permitted - Power-up reset - Power-up 3-State - 74ABTH16821A incorporates bus-hold data inputs which eliminate the need for external pull-up resistors to hold unused inputs DESCRIPTION The 74ABT16821A high-performance Bi CMOS device bines low static and dynamic power dissipation with high speed and high output drive. The 74ABT16821A has two 10-bit, edge triggered registers, with each register coupled to a 3-State output buffer. The two sections of each register are controlled independently by the clock (n CP) and Output Enable (n OE) control gates. Each register is fully edge triggered. The state of each D input, one set-up time before the Low-to-High clock transition, is transferred to the corresponding flip-flop’s Q output. The 3-State output buffers are designed to drive heavily loaded 3-State buses, MOS memories, or MOS microprocessors. The active Low Output Enable (n OE) controls all ten 3-State buffers independent of the register operation. When n OE is Low, the data in the register appears at the outputs. When n OE is High, the outputs are in high impedance “off” state, which means they will neither drive nor load the bus. Two options are available, 74ABT16821A which does not have the bus-hold feature and 74ABTH16821A which incorporates the bus-hold feature . - Output capability: +64m A/-32m A - Latch-up protection exceeds 500m A per JEDEC Std 17 - ESD protection exceeds 2000V per MIL STD 883 Method 3015 and 200V per Machine Model QUICK REFERENCE DATA SYMBOL t PLH t PHL CIN COUT ICCZ ICCL PARAMETER Propagation delay n CP to n Qx Input capacitance Output capacitance Quiescent supply current CONDITIONS Tamb = 25°C; GND = 0V CL = 50p F; VCC = 5V VI = 0V or VCC VO = 0V or VCC; 3-State Outputs disabled; VCC = 5.5V Outputs LOW; VCC = 5.5V TYPICAL 2.4 2.0 3 7 500 10 UNIT ns p F p F µA m A ORDERING INFORMATION PACKAGES 56-Pin Plastic SSOP Type III...