19-1389; Rev 2; 2/07
Low-Cost 4x4, 8x4, 8x8
Video Crosspoint Switches
Features
The MAX4359/MAX4360/MAX4456 low-cost video crosspoint switches are designed to reduce component count,
board space, design time, and system cost. Each contains a matrix of T-switches that connect any of their four
(MAX4359) or eight (MAX4360/MAX4456) video inputs to
any of their buffered outputs, in any combination. Each
matrix output is buffered by an internal, high-speed
(250V/µs), unity-gain amplifier that is capable of driving
400Ω and 20pF at 2.6VP-P. For applications requiring
increased drive capability, buffer the MAX4359/
MAX4360/MAX4456 outputs with the MAX4395 quad,
operational amplifier.
♦ Eight (MAX4456) or Four (MAX4359/MAX4360)
Internal Buffers
250V/µs Slew Rate
Three-State Output Capability
Power-Saving Disable Feature
65MHz -3dB Bandwidth
♦ Routes Any Input Channel to Any Output Channel
♦ Serial or Parallel Digital Interface
♦ Expandable for Larger Switch Matrices
♦ 80dB All-Channel Off-Isolation at 5MHz
♦ 70dB Single-Channel Crosstalk
♦ Straight-Through Pinouts Simplify Layout
♦ Low-Cost Pin-Compatible Alternative to
MAX456 (MAX4456)
The MAX4456 has a digitally controlled 8x8 switch matrix
and is a low-cost pin-for-pin compatible alternative to the
popular MAX456. The MAX4359/MAX4360 are similar to
the MAX4456, with the 8x8 switch matrix replaced by a
4x4 (MAX4359) or an 8x4 (MAX4360) switch matrix.
Three-state output capability and internal, programmable
active loads make it feasible to parallel multiple devices
to form larger switch arrays. The inputs and outputs are
on opposite sides, and a quiet power supply or digital
input line separates each channel, which reduces
crosstalk to -70dB at 5MHz. For applications demanding
better DC specifications, see the MAX456 8x8 video
crosspoint switch.
________________________ Applications
High-Speed Signal
Routing
Video-On-Demand
Systems
Video Test Equipment
Video Conferencing
Security Systems
Ordering Information
PINPACKAGE
PKG
CODE
PART
TEMP RANGE
MAX4359EAX
-40°C to +85°C
36 SSOP
A36-2
MAX4359EWG
-40°C to +85°C
24 SO
W24-2
MAX4360EAX
-40°C to +85°C
36 SSOP
A36-2
MAX4456CPL
0°C to +70°C
40 Plastic DIP
P40-1
MAX4456CQH
0°C to +70°C
44 PLCC
Q44-1
MAX4456EPL
-40°C to +85°C
40 Plastic DIP
P40-1
MAX4456EQH
-40°C to +85°C
44 PLCC
Q44-1
Pin Configurations appear at end of data sheet.
_________________________________________________ Typical Application Circuits
8 INPUT CHANNELS
4 INPUT CHANNELS
(8 INPUT CHANNELS)
(MAX4360)
AV = +2
AV = +2
MAX4395
WR
LATCH
75Ω
Z0 = 75Ω
MAX4395
WR
LATCH
75Ω
MAX4456
OUTPUT
SELECT
INPUT
SELECT
OR
SERIAL
I/O
MAX4359
(MAX4360)
A2
A1
A0
OUTPUT
SELECT
8x8
T-SWITCH
MATRIX
D3
D2
D1/SER OUT
D0/SER IN
MAX4395
INPUT
SELECT
OR
SERIAL
I/O
75Ω
Z0 = 75Ω
75Ω
A1
A0
4x4
(8x4)
T-SWITCH
MATRIX
D3
D2
D1/SER OUT
D0/SER IN
AV = +2
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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MAX4359/MAX4360/MAX4456
General Description
