CMX624D5 CML Microcircuits, CMX624D5 Datasheet - Page 5

• Manufacturer Part Number: CMX624D5
• Description: V.23/Bell 202 modem
• Manufacturer: CML Microcircuits

V23 / Bell 202 Modem
This device is capable of detecting and decoding small amplitude signals. To achieve this V
decoupling and protecting the receive path from extraneous in-band signals are very important. It is
recommended that the printed circuit board is laid out with a ground plane in the CMX624 area to provide a
low impedance connection between the V
2001 Consumer Microcircuits Limited
D2/D5/P4
CMX624
Pin No.
16
17
18
19
20
21
22
23
24
Notes:
I/P
O/P
BI
T/S
NC
=
=
=
=
=
Name
RXO
RXN
V
RD
RT
DD
-
-
-
-
Signal
Input
Output
Bidirectional
3-state Output
No Connection
Power
Type
O/P
NC
NC
NC
I/P
I/P
I/P
BI
SS
The inverting input to the Rx input amplifier.
The output of the Rx input amplifier.
Open drain output and Schmitt trigger input
forming part of the Ring Signal detector.
Schmitt trigger input to the Ring Signal Detector.
No connection should be made to this pin.
No connection should be made to this pin.
No connection should be made to this pin if the
printed circuit board is to be used for CMX624
only. If the board is also to be used for
CMX644A, a capacitor should be connected as
shown in Figure 2.
No connection should be made to this pin if the
printed circuit board is to be used for CMX624
only. If the board is also to be used for
CMX644A, a capacitor should be connected as
shown in Figure 2.
The positive supply rail. Levels and thresholds
within the device are proportional to this voltage.
Should be decoupled to V
mounted close to the device pins.
pin and the V
5
DD
Description
and V
BIAS
SS
by a capacitor
decoupling capacitors.
DD
CMX624
D/624/6
and V
BIAS