|Category||Logic => Bus Interface => Bus Oriented Circuits|
|Title||Bus Oriented Circuits|
|Description||16-bit Bus Transceiver With 3-state Output|
|Company||Texas Instruments, Inc.|
|Datasheet||Download 74AC16623 datasheet
Member of the Texas Instruments Widebus TM Family Packaged in Plastic 300-mil Shrink Small-Outline Package Using 25-mil Center-to-Center Pin Spacings 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°Cdescription
The a 16-bit transceiver designed for asynchronous communication between data buses. The control function implementation allows for maximum flexibility in timing. This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the output-enable (OEBA and OEAB) inputs. The output-enable inputs can be used to disable the device so that the buses are effectively isolated.
The dual-enable configuration gives the bus transceiver the capability to store data by simultaneous enabling of OEBA and OEAB. Each output reinforces its input in this transceiver configuration. Thus, when both control inputs are enabled and all other data sources to the two sets of bus lines are at high impedance, the bus lines will remain at their last states. The 74AC16623 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 74AC16623 is characterized for operation from to 85°C.
FUNCTION TABLE (each 8-bit section) INPUTS OEBA OEAB OPERATION B data to A bus A data to B bus Isolation B data to A bus, A data to B busEPIC and Widebus are trademarks of Texas Instruments Incorporated.
PRODUCTION DATA information is 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.This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC. 7 V Input voltage range, VI (see Note V to VCC 0.5 V Output voltage range, VO (see Note V to VCC 0.5 V Input clamp current, IIK (VI VI > VCC). 20 mA Output clamp current, IOK (VO VO > VCC). 50 mA Continuous output current, IO (VO 0 to VCC). 50 mA Continuous current through VCC or GND. 400 mA Maximum power package dissipation = 55°C (in still air). 0.85 W Storage temperature range. to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
MIN VCC VIH Supply voltage High-level input voltage VCC 3 V VCC 4.5 V VCC 5.5 V VCC 3 V VIL VI VO IOH Low-level input voltage Input voltage Output voltage High-level output current VCC 3 V VCC 4.5 V VCC 5.5 V VCC 3 V IOL t /v Low-level output current Input transition rise or fall rate VCC 4.5 V VCC 40 VCC 4.5 V VCC 5.5 V VCC ns/ °C mA NOM 5 MAX 5.5 UNIT V
TA Operating free-air temperature NOTE 2: Unused or floating pins (input or I/O) must be held high or low.
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCC 3V IOH 50 µA VOH IOH 4 mA IOL mA A IOH 75 mA IOL 50 µA VOL IOL 12 mA IOL 24 mA IOL mA II IOZ ICC Ci Control inputs or B ports VI = VCC or GND VO = VCC or GND VI = VCC or GND, VI = VCC or GND = 25°C MIN TYP MAX MIN pF V MAX UNIT
Cio or B ports VO = VCC or GND 5V 16 Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms. For I/O ports, the parameter IOZ includes the input leakage current.
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