MAX4359 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches

19-1389; Rev 1; 12/99
Low-Cost 4x4, 8x4, 8x8
Video Crosspoint Switches
General Description
Features
The MAX4359/MAX4360/MAX4456 low-cost video cross-
point switches are designed to reduce component count,
board space, design time, and system cost. Each con-
tains 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 MAX497 quad,
gain-of-two video line driver.
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.
o Eight (MAX4456) or Four (MAX4359/MAX4360)
Internal Buffers
250V/µs Slew Rate
Three-State Output Capability
Power-Saving Disable Feature
65MHz -3dB Bandwidth
o Routes Any Input Channel to Any Output Channel
o Serial or Parallel Digital Interface
o Expandable for Larger Switch Matrices
o 80dB All-Channel Off-Isolation at 5MHz
o 70dB Single-Channel Crosstalk
o Straight-Through Pinouts Simplify Layout
o Low-Cost Pin-Compatible Alternative to
MAX456 (MAX4456)
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.
PART
MAX4359EAX
MAX4359EWG
MAX4360EAX
MAX4456CPL
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
PIN-PACKAGE
36 SSOP
24 SO
36 SSOP
40 Plastic DIP
________________________ Applications ^MAX4456CQH
0°C to +70°C
44 PLCC
High-Speed Signal
Routing
Video-On-Demand
Systems
Video Test Equipment
Video Conferencing
Security Systems
MAX4456EPL
-40°C to +85°C
40 Plastic DIP
MAX4456EQH
-40°C to +85°C
44 PLCC
Pin Configurations appear at end of data sheet.
_________________________________________________ Typical Application Circuits
8 INPUT CHANNELS
WR
LATCH
MAX4456
OUTPUT
SELECT
INPUT
SELECT
OR
SERIAL
I/O
A2
A1
A0
8x8
T-SWITCH
MATRIX
D3
D2
D1/SER OUT
D0/SER IN
MAX497
A_V = +2
75Ω ^{Z0 = 75Ω}
75Ω
A_V = +2
MAX497
OUTPUT
SELECT
INPUT
SELECT
OR
SERIAL
I/O
4 INPUT CHANNELS
(8 INPUT CHANNELS)
(MAX4360)
WR
LATCH
MAX4359
(MAX4360)
A1
A0
4x4
(8x4)
T-SWITCH
D3 MATRIX
D2
D1/SER OUT
D0/SER IN
MAX497
A_V = +2
75Ω ^{Z0 = 75Ω}
75Ω
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