MAX4928A Datasheet, PDF (1/13 Pages) Maxim Integrated Products – DisplayPort/PCIe Passive Switches

19-4030; Rev 1; 8/08
DisplayPort/PCIe Passive Switches
General Description
The MAX4928A/MAX4928B high-speed passive switch-
es route PCI Express^® (PCIe) data and/or DisplayPort™
signals between two possible destinations in desktop or
laptop PCs. The MAX4928A is intended to be used with
the ATX form factor desktop PCs, while the MAX4928B
is expected to be used in the BTX form factor.
The MAX4928A/MAX4928B are hex double-pole/dou-
ble-throw (6 x DPDT) switches. The MAX4928A/
MAX4928B feature a single digital control input (SEL) to
switch signal paths and a latch input (LE) that holds the
switches in a given state.
The MAX4928A/MAX4928B are fully specified to oper-
ate from a single +3.3V (typ) power supply. The
MAX4928A/MAX4928B are available in an industry
standard 5mm x 11mm, 56-pin TQFN package. Both
devices operate over the -40°C to +85°C extended
temperature range.
Applications
Desktop PCs
Notebook PCs
PCI Express is a registered trademark of PCI-SIG.
DisplayPort is a trademark of Video Electronics Standards
Association (VESA).
TOP VIEW
GND 1
IN0+ 2
IN0- 3
IN1+ 4
IN1- 5
VDD 6
IN2+ 7
IN2- 8
IN3+ 9
IN3- 10
GND 11
OUT+ 12
OUT- 13
X+ 14
X- 15
GND 16
VDD 17
SEL 18
LE 19
GND 20
56 55 54 53 52 51 50 49
MAX4928A
*EP
21 22 23 24 25 26 27 28
48 GND
47 TX2+
46 TX2-
45 TX3+
44 TX3-
43 D0+
42 D0-
41 D1+
40 D1-
39 D2+
38 D2-
37 D3+
36 D3-
35 GND
34 VDD
33 RX0+
32 RX0-
31 RX1+
30 RX1-
29 GND
Features
♦ Single +3.3V Power Supply Voltage
♦ Supports PCIe Gen I, Gen II, and DisplayPort
Data Rates > 5Gbps
♦ Excellent Return Loss > 12dB at 2.5GHz
♦ Six Bidirectional Pairs of Switches
All Switching in One Device
♦ Low 850µA (max) Supply Current
♦ Small 5mm x 11mm, 56-Pin TQFN Package
♦ Industry-Standard Pinouts
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX4928AETN+ -40°C to +85°F
56 TQFN-EP
MAX4928BETN+ -40°C to +85°F
56 TQFN-EP
+Denotes a lead-free package/RoHS-Compliant package.
EP = Exposed paddle.
Typical Operating Circuit appears at end of data sheet.
Pin Configurations
GND 1
SEL 2
LE 3
IN0+ 4
IN0- 5
VDD 6
IN1+ 7
IN1- 8
IN2+ 9
IN2- 10
GND 11
IN3+ 12
IN3- 13
OUT+ 14
OUT- 15
GND 16
VDD 17
X+ 18
X- 19
GND 20
56 55 54 53 52 51 50 49
MAX4928B
*EP
21 22 23 24 25 26 27 28
48 GND
47 D2+
46 D2-
45 D3+
44 D3-
43 TX0+
42 TX0-
41 TX1+
40 TX1-
39 TX2+
38 TX2-
37 TX3+
36 TX3-
35 GND
34 VDD
33 AUX+
32 AUX-
31 HPD1
30 HPD2
29 GND
*CONNECT EXPOSED PADDLE TO GND.
TQFN
TQFN
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.