54ACT16544 Datasheet | Texas Instruments

description The ’ACT16544 are 16-bit registered transceivers that contain two sets of D-type latches for temporary storage of data flowing in either direction. They can be used as two 8-bit transceivers or one 16-bit transceiver. Separate latch-enable (LEAB or LEBA) and output-enable (OEAB or OEBA) inputs are provided for each register to permit independent control in either direction of data flow. The A-to-B enable (CEAB) input must be low to enter data from A or to output data to B. Having CEAB low and LEAB low makes the A-to-B latches transparent; a subsequent low-to-high transition at LEAB puts the A latches in the storage mode. Data flow from B to A is similar, but requires using the CEBA, LEBA, and OEBA inputs. 54ACT16544 . . . WD PACKAGE 74ACT16544 . . . DL PACKAGE (TOP VIEW) 1OEAB 1LEAB 1CEAB GND 1A1 1A2 VCC 1A3 1A4 1A5 GND 1A6 1A7 1A8 2A1 2A2 2A3 GND 2A4 2A5 2A6 VCC 2A7 2A8 GND 2CEAB 2LEAB 2OEAB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 1OEBA 55 1LEBA 54 1CEBA 53 GND 52 1B1 51 1B2 50 VCC 49 1B3 48 1B4 47 1B5 46 GND 45 1B6 44 1B7 43 1B8 42 2B1 41 2B2 40 2B3 39 GND 38 2B4 37 2B5 36 2B6 35 VCC 34 2B7 33 2B8 32 GND 31 2CEBA 30 2LEBA 29 2OEBA The 74ACT16544 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area. The 54ACT16544 is characterized for operation over the full military temperature range of - 55°C to 125°C. The 74ACT16544 is characterized for operation from - 40°C to 85°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. EPIC and Widebus are trademarks of Texas Instruments Incorporated. UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to...