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74LCXP16245 Datasheet, PDF (2/8 Pages) Fairchild Semiconductor – Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs/Outputs and Pull-Down Resistors | |||
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Connection Diagram
Truth Tables
Inputs
Outputs
OE1 T/R1
L
L Bus B0âB7 Data to Bus A0âA7
L
H Bus A0âA7 Data to Bus B0âB7
H
X HIGH Z State on A0âA7, B0âB7 (Note 2)
Inputs
Outputs
OE2 T/R2
L
L Bus B8âB15 Data to Bus A8âA15
L
H Bus A8âA15 Data to Bus B8âB15
H
X HIGH Z State on A8âA15, B8âB15 (Note 2)
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Note 2: A and B port inputs are still active.
Functional Descriptions
The LCXP16245 contains sixteen non-inverting bidirec-
tional buffers with 3-STATE outputs. the device is byte con-
trolled. Each byte has separate control inputs which can be
shorted together for full 16-bit operation. The T/R inputs
determine the direction of data flow through the device.
Logic Diagram
The OE inputs disable both the A and B ports by placing
them in a high impedance state. The pulldown resistor
(30K⦠normal) to GND is active only when the outputs are
3-STATED (OE = HIGH). When the outputs become active
(OE = LOW) the resistor is removed from the circuit.
www.fairchildsemi.com
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