Datasheet

ADM2482E/ADM2487E
Rev. A | Page 8 of 20
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NC = NO CONNECT
ADM2482E/
ADM2487E
TOP VIEW
(Not to Scale)
D1 1
D2
2
G
ND
1
3
V
DD1
4
V
DD2
16
GND
2
15
A 14
B 13
RxD
5
Z
12
RE 6 Y 11
DE 7 NC 10
TxD 8 GND
2
9
07379-002
Figure 2. Pin Configuration
Table 9. Pin Function Descriptions
Pin No. Mnemonic Description
1 D1 Transformer Driver Terminal 1.
2 D2 Transformer Driver Terminal 2.
3 GND
1
Ground, Logic Side.
4 V
DD1
Power Supply, Logic Side (3.3 V or 5 V). Decoupling capacitor to GND
1
required; capacitor value should be
between 0.01 μF and 0.1 μF.
5 RxD
Receiver Output Data. This output is high when (A – B) > +200 mV and low when (A – B) < –200 mV. The
output is tristated when the receiver is disabled, that is, when RE
is driven high.
6
RE
Receiver Enable Input. This is an active low input. Driving this input low enables the receiver; driving it high
disables the receiver.
7 DE Driver Enable Input. Driving this input high enables the driver; driving it low disables the driver.
8 TxD Transmit Data.
9 GND
2
Ground, Bus Side.
10 NC No Connect. This pin must be left floating.
11 Y Driver Noninverting Output.
12 Z Driver Inverting Output.
13 B Receiver Inverting Input.
14 A Receiver Noninverting Input.
15 GND
2
Ground, Bus Side.
16 V
DD2
Power Supply, Bus Side (Isolated 3.3 V Supply). Decoupling capacitor to GND
2
required; capacitor value should b
e
between 0.01 μF and 0.1 μF.