MAX4784 Maxim, MAX4784 Datasheet - Page 7

• Manufacturer Part Number: MAX4784
• Description: The MAX4780/MAX4784 are low on-resistance, low-voltage, quad 2:1 analog multiplexers that operate from a single +1
• Manufacturer: Maxim

The MAX4780/MAX4784 are low 0.7Ω (at V+ = +2.7V)
on-resistance, low-voltage, quad 2:1 analog multiplexers/
demultiplexers that operate from a +1.6V to +4.2V single
supply. CMOS switch construction allows switching
analog signals that are within the supply voltage range
(GND to V+).
When powered from a +2.7V supply, the 0.7Ω R
allows high continuous currents to be switched in a
variety of applications.
Proper power-supply sequencing is recommended for all
CMOS devices. Do not exceed the absolute maximum
ratings, because stresses beyond the listed ratings can
cause permanent damage to the devices. Always
sequence V+ on first, followed by NO_, NC_, or COM_.
Although it is not required, power-supply bypassing
improves noise margin and prevents switching noise
propagation from the V+ supply to other components. A
0.1µF capacitor, connected from V+ to GND, is adequate
for most applications.
TSSOP THIN QFN-EP
10
11
12
13
14
15
16
—
—
1
2
3
4
5
6
7
8
9
MAX4780
15
16
10
11
12
13
14
—
—
1
2
3
4
5
6
7
8
9
Applications Information
_______________________________________________________________________________________
PIN
Detailed Description
TSSOP
10
11
12
13
14
—
15
16
—
1
2
3
4
5
6
7
8
9
0.7 Ω Ω , Low-Voltage, Quad 2:1 Analog
MAX4784
THIN QFN-EP
15
16
10
11
12
—
13
14
—
1
2
3
4
5
6
7
8
9
NAME
COM1
COM2
COM3
COM4
GND
NC1
NO1
NC2
NO2
NO3
NC3
NO4
NC4
EN
V+
A0
A1
EP
ON
Address Input
Normally Closed Terminal
Normally Open Terminal
Analog Switch Common Terminal
Normally Closed Terminal
Normally Open Terminal
Analog Switch Common Terminal
Ground
Analog Switch Common Terminal
Normally Open Terminal
Normally Closed Terminal
Analog Switch Common Terminal
Normally Open Terminal
Normally Closed Terminal
Address Input
Enable. Connect to GND for normal operation.
Connect to logic-level high to turn all switches off.
Positive Supply Voltage
Exposed Pad. Internally connected to GND. Connect to a large
ground plane to maximize thermal performance. Not intended as an
electrical connection point. (Thin QFN package only.)
CONTROLLER
RING TONE/
MELODY IC
SYSTEM
CODEC
AUDIO
Typical Application Circuit
FUNCTION
Multiplexers
MAX4780
Pin Description
V
CC
1.6V TO 4.2V
INTERNAL
SPEAKER
R
EXTERNAL
SPEAKER
R
L
L
= 8Ω
= 8Ω OR 32Ω
7