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74LCXR162245MEA 반도체 회로 부품 판매점

Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs/Outputs and 26W Series Resistors in the Outputs



Fairchild Semiconductor 로고
Fairchild Semiconductor
74LCXR162245MEA 데이터시트, 핀배열, 회로
August 1998
Revised April 1999
74LCXR162245
Low Voltage 16-Bit Bidirectional Transceiver with 5V
Tolerant Inputs/Outputs and 26Series Resistors in the
Outputs
General Description
The LCXR162245 contains sixteen non-inverting bidirec-
tional buffers with 3-STATE outputs and is intended for bus
oriented applications. The device is designed for low volt-
age (2.5V or 3.3V) VCC applications with capability of inter-
facing to a 5V signal environment. The device is byte
controlled. Each byte has separate control inputs which
could be shorted together for full 16-bit operation. The T/R
inputs determine the direction of data flow through the
device. The OE inputs disable both the A and B ports by
placing them in a high impedance state.
In addition, all A and B outputs include equivalent 26
(nominal) series resistors to reduce overshoot and under-
shoot and are designed to sink/source up to 12 mA at
VCC = 3.0V.
The LCXR162245 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing CMOS low power dissipation.
Features
s 5V tolerant inputs and outputs
s 2.3V–3.6V VCC specifications provided
s A and B side outputs have equivalent 26series
resistors
s 5.3 ns tPD max (VCC = 3.3V), 20 µA ICC max
s Power down high impedance inputs and outputs
s Supports live insertion/withdrawal (Note 1)
s Flow through pinout
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s ESD performance:
Human body model > 2000V
Machine model > 200V
Note 1: To ensure the high-impedance state during power up or down OE
should be tied to VCC through a pull-up resistor: the minimum value or the
resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Order Number Package Number
Package Description
74LCXR162245MEA
MS48A
48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300” Wide
74LCXR162245MTD
MTD48
48-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.
Logic Symbol
Pin Descriptions
Pin Names
OEn
T/Rn
A0–A15
B0–B15
Description
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
© 1999 Fairchild Semiconductor Corporation DS500052.prf
www.fairchildsemi.com


74LCXR162245MEA 데이터시트, 핀배열, 회로
Connection Diagram
Truth Tables
Inputs
OE1 T/R1
LL
LH
HX
Outputs
Bus B0–B7 Data to Bus A0–A7
Bus A0–A7 Data to Bus B0–B7
HIGH Z State on A0–A7, B0–B7 (Note 2)
Inputs
Outputs
OE2 T/R2
L L Bus B8–B15 Data to Bus A8–A15
L H Bus A8–A15 Data to Bus B8–B15
H X HIGH Z State on A8–A15, B8–B15 (Note 2)
Note 2: A and B port inputs are still active
Logic Diagram
www.fairchildsemi.com
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74LCXR162245MEA transceiver

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74LCXR162245MEA

Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs/Outputs and 26W Series Resistors in the Outputs - Fairchild Semiconductor