Datasheet
_______________________________________________________________________________________ 9
MAX4936–MAX4939
Octal High-Voltage Transmit/Receive Switches
Pin Configuration
Pin Description
TOP VIEW
MAX4936/MAX4938
21
22
23
24
25
26
27
28
HV1
*EP
COM1
N.C.
GND
CLR
LE
LVCC1
NO1
HV8
COM8
GND
CLK
DIN
DOUT
LVCC8
NO8
48 47 46 45 44 43
54
53
56
55
52
51
50
49
1
+
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
42 41
40 39 38 37 36 35 34 33 32 31 30 29
GND
HV5
COM5
V
EE
V
CC
V
DD
N.C.
HV7
COM7
COM6
HV6
N.C.
HV4
COM4
N.C.
HV3
COM3
N.C.
HV2
COM2
NO5
LVCC5
LVEE6
LVEE5
LVEE4
NO4
NO7
LVCC7
LVEE8
LVEE7
LVCC6
NO6
LVCC4
LVEE3
NO3
LVCC3
LVEE2
NO2
LVCC2
LVEE1
MAX4937/MAX4939
TQFN
(5mm × 11mm)
21
22
23
24
25
26
27
28
N.C.
*EP
*CONNECT EP TO GND.
COM1
N.C.
GND
CLR
LE
LVCC1
NO1
N.C.
COM8
GND
CLK
DIN
DOUT
LVCC8
NO8
48 47 46 45 44 43
54
53
56
55
52
51
50
49
1
+
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
42 41
40 39 38 37 36 35 34 33 32 31 30 29
GND
N.C.
COM5
V
EE
V
CC
V
DD
N.C.
N.C.
COM7
COM6
N.C.
N.C.
N.C.
COM4
N.C.
N.C.
COM3
N.C.
N.C.
COM2
NO5
LVCC5
LVEE6
LVEE5
LVEE4
NO4
NO7
LVCC7
LVEE8
LVEE7
LVCC6
NO6
LVCC4
LVEE3
NO3
LVCC3
LVEE2
NO2
LVCC2
LVEE1
PIN
NAME FUNCTION
MAX4936/
MAX4938
MAX4937/
MAX4939
1 1 COM2
T/R Switch 2 Input. When the switch is on, low-voltage signals are passed
through from COM2 to NO2, while high-voltage signals are blocked. When the
switch is off, both low-voltage and high-voltage signals are blocked.
2 — HV2
T/R Switch 2 Input. COM2 follows HV2 when high-voltage signals are present on
HV2. HV2 is isolated from COM2 when low-voltage signals are present on COM2.