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MC74LCX16245DTR2 View Datasheet(PDF) - ON Semiconductor

Part NameDescriptionManufacturer
MC74LCX16245DTR2 Low?Voltage CMOS 16?Bit Transceiver With 5 V?Tolerant Inputs and Outputs (3?State, Non?Inverting) ON-Semiconductor
ON Semiconductor ON-Semiconductor
MC74LCX16245DTR2 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
MC74LCX16245
T/R1 1
B0 2
B1 3
GND 4
B2 5
B3 6
VCC 7
B4 8
B5 9
GND 10
B6 11
B7 12
B8 13
B9 14
GND 15
B10 16
B11 17
VCC 18
B12 19
B13 20
GND 21
B14 22
B15 23
T/R2 24
48 OE1
47 A0
46 A1
45 GND
44 A2
43 A3
42 VCC
41 A4
40 A5
39 GND
38 A6
37 A7
36 A8
35 A9
34 GND
33 A10
32 A11
31 VCC
30 A12
29 A13
28 GND
27 A14
26 A15
25 OE2
Table 1. PIN NAMES
Pins
Function
OEn
T/Rn
A0 − A15
B0 − B15
Output Enable Inputs
Transmit/Receive Inputs
Side A Inputs or 3−State Outputs
Side B Inputs or 3−State Outputs
T/R1 1
OE1 48
A0:7
24
T/R2
OE2 25
B0:7
A8:15
B8:15
One of Eight
Figure 2. Logic Diagram
Figure 1. Pinout: 48−Lead (Top View)
TRUTH TABLE
Inputs
OE1
T/R1
L
L
L
H
H
X
Outputs
Bus B0:7 Data to Bus A0:7
Bus A0:7 Data to Bus B0:7
High Z State on A0:7, B0:7
Inputs
OE2
T/R2
L
L
L
H
H
X
Outputs
Bus B8:15 Data to Bus A8:15
Bus A8:15 Data to Bus B8:15
High Z State on A8:15, B8:15
H = High Voltage Level
L = Low Voltage Level
Z = High Impedance State
X = High or Low Voltage Level and Transitions Are Acceptable; for ICC reasons, DO NOT FLOAT Inputs
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