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74VCXR162601MTDX View Datasheet(PDF) - Fairchild Semiconductor

Part NameDescriptionManufacturer
74VCXR162601MTDX Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the Outputs Fairchild
Fairchild Semiconductor Fairchild
74VCXR162601MTDX Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
August 1998
Revised October 2004
74VCXR162601
Low Voltage 18-Bit Universal Bus Transceivers
with 3.6V Tolerant Inputs and
Outputs and 26Series Resistors in the Outputs
General Description
The VCXR162601, 18-bit universal bus transceiver, com-
bines D-type latches and D-type flip-flops to allow data flow
in transparent, latched, and clocked modes.
Data flow in each direction is controlled by output-enable
(OEAB and OEBA), latch-enable (LEAB and LEBA), and
clock (CLKAB and CLKBA) inputs. The clock can be con-
trolled by the clock-enable (CLKENAB and CLKENBA)
inputs. For A-to-B data flow, the device operates in the
transparent mode when LEAB is HIGH. When LEAB is
LOW, the A data is latched if CLKAB is held at a HIGH-to-
LOW logic level. If LEAB is LOW, the A bus data is stored
in the latch/flip-flop on the LOW-to-HIGH transition of
CLKAB. Output-enable OEAB is active-LOW. When OEAB
is HIGH, the outputs are in the high-impedance state.
Data flow for B to A is similar to that of A to B but uses
OEBA, LEBA, CLKBA and CLKENBA.
The 74VCXR162601 is designed for low voltage (1.4V to
3.6V) VCC applications with I/O compatibility up to 3.6V.
The VCXR162601 is also designed with 26series resis-
tors on both the A and B Port outputs. This design reduces
line noise in applications such as memory address drivers,
clock drivers, and bus transceivers/transmitters.
Features
s 1.4V to 3.6V VCC supply operation
s 3.6V tolerant inputs and outputs
s 26series resistors on both the A and B Port outputs.
s tPD (A to B, B to A)
3.8 ns max for 3.0V to 3.6V VCC
s Power-down HIGH impedance inputs and outputs
s Supports live insertion/withdrawal (Note 1)
s Static Drive (IOH/IOL)
±12 mA @ 3.0V VCC
s Uses patented noise/EMI reduction circuitry
s Latchup performance exceeds 300 mA
s ESD performance:
Human body model > 2000V
Machine model >200V
Note 1: To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pull-up resistor; the minimum
value of the resistor is determined by the current-sourcing capability of the
driver.
Ordering Code:
Order Number
Package
Number
Package Description
74VCXR162601MTD
MTD56
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
© 2004 Fairchild Semiconductor Corporation DS500171
www.fairchildsemi.com
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