MAX4584EUB+ Maxim Integrated Products, MAX4584EUB+ Datasheet - Page 10

• Manufacturer Part Number: MAX4584EUB+
• Description: IC AUDIO/VIDEO SWITCH 10UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX4584EUB+

• Function: Audio/Video Switch
• Circuit: 1 x SPST - NO, 1 x SPDT
• On-state Resistance: 65 Ohm
• Voltage Supply Source: Single Supply
• Voltage - Supply, Single/dual (±): 2.7 V ~ 5.5 V
• Current - Supply: 5µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX4585 3-wire serial interface is SPI/
QSPI/MICROWIRE compatible. An active-low chip-
select (CS) input enables the device to receive data for
the serial input (DIN). Data is clocked in on the rising
edge of the serial-clock (SCLK) signal. A total of 8 bits
are needed in each write cycle. The first bit clocked
into the MAX4585 is the command byte’s MSB; the last
bit clocked in is the data byte’s LSB. The first 5 bits of
the command byte are “don’t care.” While shifting data,
the device remains in its original configuration. After all
8 bits are clocked into the input shift register, a rising
edge on CS latches the data into the MAX4585’s inter-
nal registers, initiating the device’s change of state.
Figures 3 and 4 detail the 3-wire protocol, and Table 1
details the command byte format.
Serially Controlled
Audio/Video Switches
Figure 3. 3-Wire Serial-Interface Timing Diagram
Figure 4. A Complete 3-Wire Serial Transmission
10
DATA CLOCKED IN
SCLK
DIN
CS
______________________________________________________________________________________
SCLK
DIN
CS
MSB
D7
D6 D5 D4
20%
t
CSS
INPUT DATA BITS
t
DS
SWITCHES UPDATED
3-Wire Serial Interface
D7
t
DH
20%
D3 D2 D1 D0
20%
t
CL
LSB
D6
20% 20%
t
CH
To program several MAX4585s individually using a sin-
gle µP, connect DIN of each MAX4585 together and
control CS on each MAX4585 separately. To select a
particular device, drive the corresponding CS low,
clock in the 8-bit command, then drive CS high to exe-
cute the command. Typically, only one MAX4585 is
addressed at a time.
The MAX4584/MAX4585 feature a preset power-up
state. See Table 1 to determine the power-up state of
these devices.
70%
TRANSISTOR COUNT: 2259
___________________Chip Information
D1
70%
D0
20%
t
CSH
20%
Addressable Serial Interface
t
CSW
Power-Up State
70%
70%
t
CSO