Members of the Texas Instruments Widebus TM Family 3-State True Outputs Flow-Through Architecture Optimizes PCB Layout Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise EPIC TM (Enhanced-Performance Implanted CMOS) 1-µm Process 500-mA Typical Latch-Up Immunity at 125°C Package Options Include Plastic 300-mil Shrink Small-Outline (DL) Package Using 25-mil Center-to-Center Pin Spacings and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Pin Spacings
description
The 'AC16472 are 18-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 9-bit transceivers or one 18-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.
27 30 When OEAB and LEAB are both low, the A-to-B 28 29 latches are transparent; a subsequent low-to-high transition of LEAB puts the A latches in the storage mode. With OEAB low, the B outputs are active and reflect the data present at the output of the A latches. Data flow from A is similar, but requires the use of the LEBA and OEBA inputs.
The 74AC16472 is packaged in TI's shrink small-outline package (DL), which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area. The 54AC16472 is characterized for operation over the full military temperature range to 125°C. The 74AC16472 is characterized for operation from to 85°C.
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UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303
FUNCTION TABLE INPUTS LEAB OEAB OUTPUT B0 H
L A-to-B data flow is shown: B-to-A flow is similar but uses LEBA and OEBA. Output level before the indicated steady-state input conditions were established
§ This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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