Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches SOIC 24

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General Description

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 2.6V

P-P

. For applications requiring

increased drive capability, buffer the MAX4359/

MAX4360/MAX4456 outputs with the MAX4395 quad,

operational amplifier.

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

Features

♦ 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)

MAX4359/MAX4360/MAX4456

Low-Cost 4x4, 8x4, 8x8

Video Crosspoint Switches

________________________________________________________________ Maxim Integrated Products 1

OUTPUT

SELECT

4x4

(8x4)

T-SWITCH

MATRIX

MAX4395

4 INPUT CHANNELS

(8 INPUT CHANNELS)

D1/SER OUT

D0/SER IN

INPUT

SELECT

SERIAL

I/O

MAX4359

(MAX4360)

LATCH

75Ω

= +2

= 75Ω

(MAX4360)

OUTPUT

SELECT

8x8

T-SWITCH

MATRIX

MAX4395

8 INPUT CHANNELS

D1/SER OUT

D0/SER IN

INPUT

SELECT

SERIAL

I/O

MAX4456

LATCH

75Ω

= +2

MAX4395

= +2

PART TEMP RANGE

PIN-

PACKAGE

PKG

CODE

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

_________________________________________________ Typical Application Circuits

19-1389; Rev 2; 2/07

High-Speed Signal

Routing

Video-On-Demand

Systems

Video Test Equipment

Video Conferencing

Security Systems

Ordering Information

Pin Configurations appear at end of data sheet.

Summary of content (17 pages)

PAGE 1
9-1389; 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.
PAGE 2
MAX4359/MAX4360/MAX4456 Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches ABSOLUTE MAXIMUM RATINGS Total Supply Voltage (V+ to V-) ...........................................+12V Positive Supply Voltage (V+) Referred to AGND .......-0.3V to +12V Negative Supply Voltage (V-) Referred to AGND ......-12V to +0.3V DGND to AGND ..................................................................±0.3V Buffer Short Circuit to Ground when Not Exceeding Package Power Dissipation .............
PAGE 3
Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches (V+ = +5V, V- = -5V, VLOAD = +5V (internal load resistors on), VAGND = VDGND = 0V, TA = +25°C, unless otherwise noted.
PAGE 4
MAX4359/MAX4360/MAX4456 Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches Pin Description PIN MAX4359 MAX4360 MAX4456 NAME FUNCTION SO SSOP SSOP DIP PLCC 1 1 1 1 2 D1/ SER OUT Parallel Data Bit D1 when SER/PAR = GND. Serial output for cascading multiple parts when SER/PAR = VCC. 2 2 2 2 3 D0/SER IN Parallel Data Bit D0 when SER/PAR = GND. Serial input when SER/PAR = VCC.
PAGE 5
Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches PIN MAX4359 MAX4360 MAX4456 NAME FUNCTION SO SSOP SSOP DIP PLCC — — — 23 26 CE Active-Low Chip Enable. WR is enabled when CE = GND and CE = VCC. WR is disabled when CE = VCC and CE = GND. 16 27 27 24 27 CE Active-High Chip Enable. WR is enabled when CE = GND and CE = VCC. WR is disabled when CE = VCC and CE = GND.
PAGE 6
MAX4359/MAX4360/MAX4456 Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches Detailed Description Output Buffers The MAX4456 video crosspoint switch consists of 64 T-switches in an 8x8 grid (Figure 1). The eight matrix outputs are followed by eight wideband buffers optimized for driving 400Ω and 20pF loads. The MAX4359’s core is a 4x4 switch matrix with each of its outputs followed by a wideband buffer. The MAX4360 has an 8x4 matrix and four output buffers.
PAGE 7
Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches Digital Interface The desired switch state can be loaded in a parallelinterface mode or serial-interface mode (Table 3 and Figures 4, 5, 6). All action associated with the WR line occurs on its rising edge. The same is true for the LATCH line if EDGE/LEVEL is high. Otherwise, the second-rank registers update while LATCH is low (when EDGE/LEVEL is low). WR is logically ANDed with CE and CE (when present) to allow active-high or activelow chip enable.
PAGE 8
MAX4359/MAX4360/MAX4456 Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches 32-Bit Serial-Interface Mode (MAX4456) In serial mode (SER/PAR = VCC), all first-rank registers are loaded with data, making it unnecessary to specify an output address (A2, A1, A0). The input data format is D3–D0, starting with OUT0 and ending with OUT7 for 32 total bits. Only codes 0000 through 1010 are valid. Code 1010 disables a buffer, while code 1001 enables it.
PAGE 9
Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches MAX4359/MAX4360/MAX4456 +5V 5 IN0 3 OUT0 39 4 1 ZO = 75 75Ω MAX4395 2 75Ω 11 -5V 200Ω 200Ω 7 5 OUT1 37 IN1 7 75Ω ZO = 75 MAX4395 6 8 INPUT VIDEO CHANNELS MAX4456 9 IN2 75Ω 200Ω 200Ω 10 OUT2 35 8 75Ω ZO = 75 MAX4395 9 75Ω 200Ω 200Ω DB–25 14 18 19 20 21 22 23 24 25 1 2 3 4 5 6 7 8 11 13 15 17 19 IN3 IN4 IN5 IN6 IN7 22 21 LATCH WR 2 1 38 36 6 4 3 D0/SER IN D1/SER OUT D2 D3 A0 A1 A2 OUT3 OUT4 OUT5 OUT6 OUT7 CE EDGE/LEVE
PAGE 10
MAX4359/MAX4360/MAX4456 Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches Figure 3. BASIC Program for Loading Data into the MAX4456 from a PC Using Figure 2’s Circuit Timing Diagrams A0–A2 VALID DATA N-1 VALID DATA N D0–D3 tDS tDH tWL tWH WR tD LATCH tL Figure 4.
PAGE 11
Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches NOTE: SEE FIGURE 4 FOR WR AND LATCH TIMING. DATA (N) DATA (N + 1) DATA (N + 2) WR LATCH 1st-RANK REGISTER DATA DATA (N) 2nd-RANK REGISTER DATA (EDGE/LEVEL = GND) DATA (N) 2nd-RANK REGISTER DATA (EDGE/LEVEL = VCC) DATA (N + 1) DATA (N + 2) DATA (N + 1) DATA (N) DATA (N + 1) Figure 5. Parallel-Interface Mode Format (SER/PAR = GND) NOTES: SEE TABLE 2 FOR INPUT DATA. SEE FIGURE 4 FOR WR AND LATCH TIMING.
PAGE 12
MAX4359/MAX4360/MAX4456 Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches Dynamic Test Circuits IN0 OUT0 VOUT IN1 OUT1 VOUT IN2 OUT2 VOUT IN3 MAX4456 OUT3 IN3 MAX4456 OUT3 VOUT IN4 IN0 OUT0 IN1 OUT1 IN2 OUT2 VOUT OUT4 IN4 OUT4 VOUT IN5 OUT5 IN5 OUT5 VOUT IN6 OUT6 IN6 OUT6 VOUT IN7 OUT7 IN7 OUT7 VOUT LOAD +5V LOAD +5V VIN = 2VP-P AT 5MHz RS = 75Ω VIN = 2VP-P, SWEEP FREQUENCY RS = 75Ω -3dB BANDWIDTH (NOTES 1–4) 7 x 75Ω ALL-CHANNEL OFF-ISOLATION (NOTES 1, 5–8) IN
PAGE 13
Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches TOP VIEW 24 V+ D1/SER OUT 1 23 OUT0 D0/SER IN 2 D1/SER OUT 1 36 V+ D0/SER IN 2 D1/SER OUT 1 35 OUT0 36 V+ D0/SER IN 2 35 OUT0 22 D2 A1 3 34 D2 A1 3 21 OUT1 IN0 4 33 OUT1 IN0 4 33 OUT1 20 D3 A0 5 32 D3 A0 5 32 D3 IN1 6 19 OUT2 IN1 6 31 OUT2 IN1 6 LOAD 7 18 AGND LOAD 7 IN2 8 17 OUT3 IN2 8 29 AGND IN2 8 29 AGND DGND 9 28 OUT3 DGND 9 28 OUT3 13 V- SO D1/SER OUT 1 40 V+ D0/SER IN 2 39 OUT0 A2 3 A1 4 38 D2 MAX445
PAGE 14
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) SSOP.EPS MAX4359/MAX4360/MAX4456 Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches 36 E DIM A A1 B C e E H L D H INCHES MILLIMETERS MAX MIN 0.096 0.104 0.004 0.011 0.012 0.017 0.013 0.009 0.0315 BSC 0.299 0.291 0.398 0.414 0.040 0.020 0.598 0.612 MAX MIN 2.65 2.44 0.29 0.10 0.44 0.30 0.23 0.32 0.80 BSC 7.40 7.
PAGE 15
Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches E DIM A A1 B C e E H L H MAX MIN 0.104 0.093 0.012 0.004 0.019 0.014 0.013 0.009 0.050 0.299 0.291 0.394 0.419 0.050 0.016 SOICW.EPS INCHES N MILLIMETERS MIN 2.35 0.10 0.35 0.23 MAX 2.65 0.30 0.49 0.32 1.27 7.40 7.60 10.00 10.65 0.40 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D D D D A B e FRONT VIEW MIN 0.398 0.447 0.496 0.598 0.697 MAX 0.413 0.463 0.512 0.614 0.713 MILLIMETERS MIN 10.10 11.35 12.60 15.20 17.70 MAX 10.50 11.75 13.
PAGE 16
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) PLCC.EPS MAX4359/MAX4360/MAX4456 Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches e A A1 A2 A3 B B1 C e D D1 D3 N MILLIMETERS INCHES MAX MIN MAX MIN 4.57 0.165 0.180 4.20 3.04 0.090 0.120 2.29 3.96 0.145 0.156 3.69 0.51 --0.020 --0.53 0.013 0.021 0.33 0.81 0.026 0.032 0.66 0.28 0.009 0.011 0.23 1.27 0.
PAGE 17
Low-Cost 4x4, 8x4, 8x8 Video Crosspoint Switches DIM A A1 A2 A3 B B1 C D1 E E1 e eA eB L 1 TOP VIEW E D A E1 A3 A1 A2 e MILLIMETERS MAX MIN 5.08 0.39 3.18 4.45 2.03 1.40 0.51 0.41 1.65 1.14 0.21 0.30 0.13 0.22 15.24 15.87 13.34 14.61 2.54 BSC 15.24 BSC 3.05 17.78 3.81 VARIATIONS: INCHES 0∞-15∞ L INCHES MAX MIN 0.200 0.015 0.125 0.175 0.080 0.055 0.020 0.016 0.065 0.045 0.012 0.008 0.009 0.005 0.625 0.600 0.525 0.575 0.100 BSC 0.600 BSC 0.700 0.120 0.150 PDIPW.