Datasheet
10 _____________________________________________________________________________________
MAX4936–MAX4939
Octal High-Voltage Transmit/Receive Switches
Pin Description (continued)
PIN
NAME FUNCTION
MAX4936/
MAX4938
MAX4937/
MAX4939
3, 6, 15, 18, 54
2, 3, 5, 6, 8,
13, 15, 16, 18,
19, 21, 54, 56
N.C. No Connection. Not internally connected.
4 4 COM3
T/R Switch 3 Input. When the switch is on, low-voltage signals are passed
through from COM3 to NO3, while high-voltage signals are blocked. When the
switch is off, both low-voltage and high-voltage signals are blocked.
5 — HV3
T/R Switch 3 Input. COM3 follows HV3 when high-voltage signals are present on
HV3. HV3 is isolated from COM3 when low-voltage signals are present on COM3.
7 7 COM4
T/R Switch 4 Input. When the switch is on, low-voltage signals are passed
through from COM4 to NO4, while high-voltage signals are blocked. When the
switch is off, both low-voltage and high-voltage signals are blocked.
8 — HV4
T/R Switch 4 Input. COM4 follows HV4 when high-voltage signals are present on
HV4. HV4 is isolated from COM4 when low-voltage signals are present on COM4.
9 9 V
DD
Positive Logic Supply. Bypass V
DD
to GND with a 1FF or greater ceramic
capacitor as close as possible to the device.
10 10 V
CC
Positive Analog Supply. Bypass V
CC
to GND with a 1FF or greater ceramic
capacitor as close as possible to the device.
11 11 V
EE
Negative Analog Supply. Bypass V
EE
to GND with a 1FF or greater ceramic
capacitor as close as possible to the device.
12, 23, 53 12, 23, 53 GND Ground
13 — HV5
T/R Switch 5 Input. COM5 follows HV5 when high-voltage signals are present on
HV5. HV5 is isolated from COM5 when low-voltage signals are present on COM5.
14 14 COM5
T/R Switch 5 Input. When the switch is on, low-voltage signals are passed
through from COM5 to NO5, while high-voltage signals are blocked. When the
switch is off, both low-voltage and high-voltage signals are blocked.
16 — HV6
T/R Switch 6 Input. COM6 follows HV6 when high-voltage signals are present on
HV6. HV6 is isolated from COM6 when low-voltage signals are present on COM6.
17 17 COM6
T/R Switch 6 Input. When the switch is on, low-voltage signals are passed
through from COM6 to NO6, while high-voltage signals are blocked. When the
switch is off, both low-voltage and high-voltage signals are blocked.
19 — HV7
T/R Switch 7 Input. COM7 follows HV7 when high-voltage signals are present on
HV7. HV7 is isolated from COM7 when low-voltage signals are present on COM7.
20 20 COM7
T/R Switch 7 Input. When the switch is on, low-voltage signals are passed
through from COM7 to NO7, while high-voltage signals are blocked. When the
switch is off, both low-voltage and high-voltage signals are blocked.
21 — HV8
T/R Switch 8 Input. COM8 follows HV8 when high-voltage signals are present on
HV8. HV8 is isolated from COM8 when low-voltage signals are present on COM8.
22 22 COM8
T/R Switch 8 Input. When the switch is on, low-voltage signals are passed
through from COM8 to NO8, while high-voltage signals are blocked. When the
switch is off, both low-voltage and high-voltage signals are blocked.