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MAX4761EWX+T

P1-P3P4-P6P7-P9P10-P12P13-P14
MAX4760/MAX4760A/MAX4761/MAX4761A
High-Bandwidth, Quad DPDT Switches
_______________________________________________________________________________________ 7
Pin Description
PIN
MAX4760/MAX4760A MAX4761/MAX4761A
TQFN-EP UCSP TQFN-EP UCSP
NAME FUNCTION
1 A1 1 A1 NC1 Analog Switch 1, Normally Closed Terminal 1
2 B2 2 B2 COM2 Analog Switch 2, Common Terminal 2
3 A2 3 A2 NC2 Analog Switch 2, Normally Closed Terminal 2
4 A3 4 A3 INA
Logic Control Digital Input for the MAX4760/MAX4760A Switch 1
and Switch 2. Digital control input for all MAX4761/MAX4761A
switches.
5 C3, D4 5 C3, D4 V+ Positive Supply Voltage
6 A4 — — INB Logic Control Digital Input for Switches 3 and 4
7 A5 7 A5 NC3 Analog Switch 3, Normally Closed Terminal 3
8 B5 8 B5 COM3 Analog Switch 3, Common Terminal 3
9 A6 9 A6 NC4 Analog Switch 4, Normally Closed Terminal 4
10 B6 10 B6 COM4 Analog Switch 4, Common Terminal 4
11, 14,
17, 29,
32, 35
—
6, 11, 14,
17, 24,
29, 32, 35
A4, F3 N.C. No Connection. Leave N.C. unconnected.
12 C5 12 C5 NO3 Analog Switch 3, Normally Open Terminal 3
13 C6 13 C6 NO4 Analog Switch 4, Normally Open Terminal 4
15 D6 15 D6 NO8 Analog Switch 8, Normally Open Terminal 8
16 D5 16 D5 NO7 Analog Switch 7, Normally Open Terminal 7
18 E6 18 E6 COM8 Analog Switch 8, Common Terminal 8
19 F6 19 F6 NC8 Analog Switch 8, Normally Closed Terminal 8
20 E5 20 E5 COM7 Analog Switch 7, Common Terminal 7
21 F5 21 F5 NC7 Analog Switch 7, Normally Closed Terminal 7
22 F4 — — IND Logic Control Digital Input for Switches 7 and 8
23 C4, D3 23 C4, D3 GND Ground
24 F3 — — INC Logic Control Digital Input for Switches 5 and 6
25 F2 25 F2 NC6 Analog Switch 6, Normally Closed Terminal 6
26 E2 26 E2 COM6 Analog Switch 6, Common Terminal 6
27 F1 27 F1 NC5 Analog Switch 5, Normally Closed Terminal 5
28 E1 28 E1 COM5 Analog Switch 5, Common Terminal 5
30 D2 30 D2 NO6 Analog Switch 6, Normally Open Terminal 6
31 D1 31 D1 NO5 Analog Switch 5, Normally Open Terminal 5
33 C1 33 C1 NO1 Analog Switch 1, Normally Open Terminal 1
34 C2 34 C2 NO2 Analog Switch 2, Normally Open Terminal 2
36 B1 36 B1 COM1 Analog Switch 1, Common Terminal 1
— — 22 F4 EN Output Enable, Active Low
— — — — EP Exposed Pad (TQFN Only). Connect EP to GND.
MAX4760/MAX4760A/MAX4761/MAX4761A
High-Bandwidth, Quad DPDT Switches
8 _______________________________________________________________________________________
Detailed Description
The MAX4760/MAX4760A quad double-pole/double-
throw (DPDT) and the MAX4761/MAX4761A octal sin-
gle-pole/double-throw (SPDT) analog switches operate
from a single +1.8V to +5.5V supply. These devices are
fully specified for +3V applications.
The MAX4760/MAX4760A/MAX4761/MAX4761A have a
guaranteed 2.0Ω (typ) on-resistance to switch data or
audio signals. The low 54pF (typ) capacitance and 0.2ns
change in skew makes them ideal for data switching
applications. The MAX4760/MAX4760A have four logic
inputs to control two switches in pairs and the
MAX4761/MAX4761A have one logic control input and an
enable input (EN) to disable the switches.
Applications Information
Digital Control Inputs
The MAX4760/MAX4760A/MAX4761/MAX4761A logic
inputs accept up to +5.5V regardless of the supply volt-
age. For example, with a +3.3V supply, IN_ can be dri-
ven low to GND and high to +5.5V, which allows mixed
logic levels in a system. Driving the control logic inputs
rail-to-rail also minimizes power consumption.
For the MAX4761/MAX4761A, drive EN low to enable.
When EN is high, COM_ is high impedance.
Analog Signal Levels
Analog signal inputs over the full voltage range (0V to V+)
are passed through the switch with minimal change in on-
resistance (see the
Typical Operating Characteristics
).
The switches are bidirectional so NO_, NC_, and COM_
can be either inputs or outputs.
Power-Supply Bypassing
Power-supply bypassing improves noise margin and
prevents switching noise from propagating from the V+
supply to other components. A 0.1µF capacitor connect-
ed from V+ to GND is adequate for most applications.
Power-Supply Sequencing
CMOS devices require proper power-supply sequenc-
ing. Always apply V+ before the analog signals, espe-
cially if the input signal is not current limited. If
sequencing is not possible, and the input signal is not
current limited to less than 20mA, add a small-signal
diode (Figure 1). Adding the diode reduces the analog
range to a diode drop (0.7V) below V+ and increases
the on-resistance slightly. The maximum supply voltage
must not exceed +6V at any time.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, printed circuit
board techniques, bump-pad layout, and recommend-
ed reflow temperature profile, as well as the latest infor-
mation on reliability testing results, refer to the
Application Note 1891:
Wafer-Level Packaging (WLP)
and Its Applications
available on Maxim’s website at
www.maxim-ic.com/ucsp
.
POSITIVE SUPPLY
COM
NO
D1
GND
V+
MAX4760
MAX4761
Figure 1. Overvoltage Protection Using an External Blocking
Diode
MAX4760/MAX4760A/MAX4761/MAX4761A
High-Bandwidth, Quad DPDT Switches
_______________________________________________________________________________________ 9
Timing Circuits/Timing Diagrams
t
r
< 5ns
t
f
< 5ns
50%
0V
LOGIC
INPUT
R
L
COM_
GND
IN_
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
V
OUT
= V
N_ (
R
L
)
R
L
+ R
ON
V
N_
V+
t
OFF
0V
NO_
OR NC_
0.9 x V
0UT
0.9 x V
OUT
t
ON
V
OUT
SWITCH
OUTPUT
LOGIC
INPUT
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
V+
C
L
V+
V
OUT
50%
MAX4760/MAX4760A
MAX4761/MAX4761A
Figure 2. Switching Time
50%
V+
0V
LOGIC
INPUT
V
OUT
0.9 x V
OUT
t
BBM
LOGIC
INPUT
R
L
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
NO_
IN_
NC_
V
OUT
V+
V+
C
L
V
N_
COM_
MAX4760/MAX4760A
MAX4761/MAX4761A
Figure 3. Break-Before-Make Interval
P1-P3P4-P6P7-P9P10-P12P13-P14

MAX4761EWX+T

Mfr. #:
Buy MAX4761EWX+T
Manufacturer:
Maxim Integrated
Description:
Analog Switch ICs High-Bandwidth, Quad DPDT Switches
Lifecycle:
New from this manufacturer.
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