參數(shù)資料
型號: 74VCXR162601MTD
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs and 26ヘ Series Resistors in the Outputs
中文描述: ALVC/VCX/A SERIES, 18-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO56
封裝: 6.10 MM, MO-153, TSSOP-56
文件頁數(shù): 1/7頁
文件大?。?/td> 60K
代理商: 74VCXR162601MTD
August 1998
Revised April 1999
7
S
1999 Fairchild Semiconductor Corporation
DS500171.prf
www.fairchildsemi.com
74VCXR162601
Low Voltage 18-Bit Universal Bus Transceivers with 3.6V
Tolerant Inputs and Outputs and 26
Series 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 (1.65V to
3.6V) V
CC
applications with I/O compatibility up to 3.6V.
The VCXR162601 is also designed with 26
series 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
I
1.65–3.6V V
CC
supply operation
I
3.6V tolerant inputs and outputs
I
26
series resistors on both the A and B Port outputs.
I
t
PD
(A to B, B to A)
3.8 ns max for 3.0V to 3.6V V
CC
4.6 ns max for 2.3V to 2.7V V
CC
9.2 ns max for 1.65V to 1.95V V
CC
I
Power-down HIGH impedance inputs and outputs
I
Supports live insertion/withdrawal (Note 1)
I
Static Drive (I
OH
/I
OL
)
±
12 mA @ 3.0V V
CC
±
8 mA @ 2.3V V
CC
±
3 mA @ 1.65V V
CC
I
Uses patented noise/EMI reduction circuitry
I
Latchup performance exceeds 300 mA
I
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 V
CC
through a pull-up resistor; the minimum
value of the resistor is determined by the current-sourcing capability of the
driver.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Order Number
74VCXR162601MTD
Package Number
MTD56
Package Description
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
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