Features: ·Members of the Texas Instruments WidebusE Family
·-State Outputs Drive Bus Lines Directly
·Flow-Through Architecture Optimizes PCB Layout
·Distributed VCC and GND Pin Configurations Minimize High-Speed Switching Noise
·EPIC™ (Enhanced-Performance Implanted CMOS) 1-mm Process
·500-mA Typical Latch-Up Immunity at 125°C
·Package Options Include Plastic 300-mil Shrink Small-Outline (DL) Packages Using 25-mil Center-to-Center Pin Spacings and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Pin SpacingsPinout
SpecificationsSupply voltage range, VCC . . . . . . . . . . . . . . . . . . . . .. . . . . ... . .. . . . . . . . 0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . ... . . 0.5 V to VCC + 0.5 V
Output voltage range, VO (see Note 1) . . . . . . . . . .. . . . . . . ... . . 0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . .. ... . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . .. . . .... . . . . . ±50 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . .. .... . . . . . . . ±50 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±400 mA
Maximum power dissipation at TA = 55°C (in still air) (see Note 2): DL package . .. 1.2 W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 65°C 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.
DescriptionThe 54AC16620 are inverting 16-bit transceivers designed for asynchronous communication between data buses. The control-function implementation allows for maximum flexibility in timing.
These 54AC16620 can be used as two 8-bit transceivers or one 16-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the complementary output-enable (OEAB or OEBA) inputs.
The output-enable inputs of 54AC16620 can be used to disable the device so that the buses are effectively isolated. The dual-enable configuration gives the transceiver the capability to store data by simultaneously enabling OEAB and OEBA. 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 remain at their last states.
The 54AC16620 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 54AC16620 is characterized for operation over the full military temperature range of 55°C to 125°C. The 74AC16620 is characterized for operation from 40°C to 85°C.
54AC16620 Data Sheet
