MAXIM MAX9392, MAX9393 User Manual

General Description

The MAX9392/MAX9393 dual 2 x 2 crosspoint switches
perform high-speed, low-power, and low-noise signal
distribution. The MAX9392/MAX9393 multiplex one of two
differential input pairs to either or both low-voltage differ­ential signaling (LVDS) outputs for each channel.
Independent enable inputs turn on or turn off each differ­ential output pair.

Four LVCMOS/LVTTL logic inputs (two per channel) con­trol the internal connections between inputs and outputs.
This flexibility allows for the following configurations: 2 x 2
crosspoint switch, 2:1 mux, 1:2 splitter, or dual repeater.
This makes the MAX9392/MAX9393 ideal for protection
switching in fault-tolerant systems, loopback switching for
diagnostics, fanout buffering for clock/data distribution,
and signal regeneration.

Fail-safe circuitry forces the outputs to a differential low
condition for undriven inputs or when the common­mode voltage exceeds the specified range. The
MAX9392 provides high-level input fail-safe detection
for LVDS, HSTL, and other GND-referenced differential
inputs. The MAX9393 provides low-level input fail-safe
detection for LVPECL, CML, and other V

CC

-referenced

differential inputs.

Ultra-low 98ps

(P-P)

(max) pseudorandom bit sequence
(PRBS) jitter ensures reliable communications in high­speed links that are highly sensitive to timing error,
especially those incorporating clock-and-data recovery,
or serializers and deserializers. The high-speed switch­ing performance guarantees 1.5GHz operation and less
than 67ps (max) skew between channels.

LVDS inputs and outputs are compatible with the
TIA/EIA-644 LVDS standard. The LVDS outputs drive
100Ω loads. The MAX9392/MAX9393 are offered in
a 32-pin TQFP package and operate over the extended
temperature range (-40°C to +85°C).

Also see the MAX9390/MAX9391 for the crossflow version.

Applications

High-Speed Telecom/Datacom Equipment

Central-Office Backplane Clock Distribution

DSLAM

Protection Switching

Fault-Tolerant Systems

Features

♦ 1.5GHz Operation with 250mV Differential Output

Swing

♦ 2ps

RMS

(max) Random Jitter

♦ AC Specifications Guaranteed for 150mV

Differential Input

♦ Signal Inputs Accept Any Differential Signaling

Standard

♦ LVDS Outputs for Clock or High-Speed Data

♦ High-Level Input Fail-Safe Detection (MAX9392)

♦ Low-Level Input Fail-Safe Detection (MAX9393)

♦ 3.0V to 3.6V Supply Voltage Range

♦ LVCMOS/LVTTL Logic Inputs Control Signal

Routing

MAX9392/MAX9393

Anything-to-LVDS Dual 2 x 2

Crosspoint Switches

________________________________________________________________ Maxim Integrated Products 1

Pin Configurations

Ordering Information

19-2913; Rev 1; 5/07

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.

+Denotes a lead-free package.

Functional Diagram and Typical Operating Circuit appear at
end of data sheet.

EVALUATION KIT

AVAILABLE

PART TEMP RANGE

MAX9392EHJ -40°C to +85°C 32 TQFP H32-1

MAX9392EHJ+ -40°C to +85°C 32 TQFP H32-1

MAX9393EHJ -40°C to +85°C 32 TQFP H32-1

MAX9393EHJ+ -40°C to +85°C 32 TQFP H32-1

PIN­PACKAGE

PKG

CODE

TOP VIEW

INA1

INA1

OUTB1

VCCASEL0

293031

MAX9392
MAX9393

GND

OUTB1

TQFP

13

ENB0

27

14

INA0

26

15

OUTB0

INA0

25

1611 12

OUTB0

GND

CC

V

24 V

23

22

21

20

19

18

17

CC

OUTA0

OUTA0

ENA0

GND

OUTA1

OUTA1

ENA1

INB0

INB0

BSEL0

V

INB1

INB1

ASEL1

32 28

+

1GND

2

3

4

5

CC

6

7

8BSEL1

10

9

ENB1

MAX9392/MAX9393

Anything-to-LVDS Dual 2 x 2
Crosspoint Switches

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= 3.0V to 3.6V, RL= 100Ω±1%, EN_ _ = VCC, VCM= 0.05V to (VCC- 0.6V) (MAX9392), VCM= 0.6V to (VCC- 0.05V)
(MAX9393), T

A

= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 3.3V, |VID| = 0.2V, VCM= 1.2V, TA= +25°C,

unless otherwise noted.) (Notes 1, 2, and 3)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VCCto GND...........................................................-0.3V to +4.1V

IN_ _, IN_ _, OUT_ _, OUT_ _, EN_ _,

_SEL_ to GND..........................................-0.3V to (V

CC

+ 0.3V)

IN_ _ to IN_ _ ..........................................................................±3V

Short-Circuit Duration (OUT_ _, OUT_ _) ...................Continuous

Continuous Power Dissipation (T

A

= +70°C)
32-Pin TQFP (derate 13.1mW/°C

above +70°C).............................................................1047mW

Junction-to-Ambient Thermal Resistance in Still Air

32-Pin TQFP............................................................+76.4°C/W

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Soldering Temperature (10s) ...........................................+300°C

LVCMOS/LVTTL INPUTS (EN_ _, _SEL_)

Input High Voltage V

Input Low Voltage V

Input High Current I

Input Low Current I

DIFFERENTIAL INPUTS (IN_ _, IIIINNNN____ ____)

Differential Input Voltage V

Input Common-Mode Range V

Input Current

LVDS OUTPUTS (OUT_ _, OOOOUUUUTTTT____ ____)

Differential Output Voltage V

Change in Magnitude of V
Between Complementary Output
States

Offset Common-Mode Voltage V

Change in Magnitude of V
Between Complementary Output
States

PARAMETER SYM B O L CONDITIONS MIN TYP MAX UNITS

IH

IL

VIN = 2.0V to V

VIN = 0 to 0.8V 0 10 µA

V

ID

,

OD

OS

> 0 and V

ILD

MAX9392 0.05 VCC - 0.6

MAX9393 0.6 VCC - 0.05

MAX9392 |VID| < 3.0V -50 +10

RL = 100Ω, Figure 2 250 350 450 mV

Figure 2 1.0 50 mV

Figure 2 1.125 1.25 1.375 V

Figure 2 1.0 50 mV

OD

OS

IH

IL

CM

I

IN_ _

I

IN_ _ MAX9393 |V

OD

ΔV

OS

ΔV

2.0 V

0 0.8 V

CC

< VCC, Figure 1 0.1 3.0 V

IHD

| < 3.0V -10 +90

ID

020µA

CC

V

V

µA

MAX9392/MAX9393

Anything-to-LVDS Dual 2 x 2

Crosspoint Switches

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS

(VCC= 3.0V to 3.6V, fIN≤ 1.34GHz, t

R_IN

= t

F_IN

= 125ps, RL= 100Ω±1%, |VID| ≥ 150mV, VCM= 0.075V to (VCC- 0.6V) (MAX9392

only), V

CM

= 0.6V to (VCC- 0.075V) (MAX9393 only), EN_ _ = VCC, TA= -40°C to +85°C, unless otherwise noted. Typical values are

at V

CC

= 3.3V, |VID| = 0.2V, VCM= 1.2V, fIN= 1.34GHz, TA= +25°C, unless otherwise noted.) (Note 5)

Note 1: Measurements obtained with the device in thermal equilibrium. All voltages referenced to GND except V

ID

, VOD, and ΔVOD.

Note 2: Current into the device defined as positive. Current out of the device defined as negative.
Note 3: DC parameters tested at T

A

= +25°C and guaranteed by design and characterization for TA= -40°C to +85°C.

Note 4: Current through either output.
Note 5: Guaranteed by design and characterization. Limits set at ±6 sigma.
Note 6: t

SKEW

is the magnitude difference of differential propagation delays for the same output over same conditions. t

SKEW

=

|t

PHL

- t

PLH

|.

Note 7: Measured between outputs of the same device at the signal crossing points for a same-edge transition, under the same

conditions.

Note 8: Device jitter added to the differential input signal.

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= 3.0V to 3.6V, RL= 100Ω±1%, EN_ _ = VCC, VCM= 0.05V to (VCC- 0.6V) (MAX9392), VCM= 0.6V to (VCC- 0.05V)
(MAX9393), T

A

= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 3.3V, |VID| = 0.2V, VCM= 1.2V, TA= +25°C,

unless otherwise noted.) (Notes 1, 2, and 3)

Output Short-Circuit Current
(Either Output Shorted to GND)

Output Short-Circuit Current
(Outputs Shorted Together)

SUPPLY CURRENT

Supply Current I

PARAMETER SYM B O L CONDITIONS MIN TYP MAX UNITS

V

|I

|I

OSB

OS

CC

V

= ±100m V

ID

|

( N ote 4)

= ±100mV, V

V

ID

|

(Note 4)

RL = 100Ω, EN_ _ = V

OUT_ _

V

OUT_ _

OUT_ _

CC

or V

= V

= V

OUT_ _

= 0 30 40

OUT_ _

= 0 18 24

OUT_ _

mA

5.0 12 mA

68 98 mA

PARAMETER SYM B O L CONDITIONS MIN TYP MAX UNITS

_SEL_ to Switched Output t

Disable Time to Differential
Output Low

Enable Time to Differential
Output High

Switching Frequency f

Low-to-High Propagation Delay t

High-to-Low Propagation Delay t

SWITCH

t

PHD

t

PDH

MAX

PLH

PHL

Figure 3 1.1 ns

Figure 4 1.7 ns

Figure 4 1.7 ns

VOD > 250mV 1.5 2.2 GHz

Figures 1, 5 294 410 574 ps

Figures 1, 5 286 402 555 ps

Pulse Skew |t

Output-to-Output Skew t

Output Low-to-High Transition
Time (20% to 80%)

Output High-to-Low Transition
Time (80% to 20%)

Added Random Jitter t

Added Deterministic Jitter t

PLH

- t

|t

PHL

SKEW

CCS

t

R

t

F

RJ

DJ

Figures 1, 5 (Note 6) 17 104 ps

Figures 5, 6 (Note 7) 4 67 ps

Figures 1, 5; fIN = 100MHz 112 142 185 ps

Figures 1, 5; fIN = 100MHz 112 145 185 ps

f

= 1.34GHz, clock pattern (Note 8) 2 ps

IN_ _

1.34Gbps, 223 - 1 PRBS (Note 8) 60 98 ps

RMS

P-P

MAX9392/MAX9393

Anything-to-LVDS Dual 2 x 2
Crosspoint Switches

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= +3.3V, |VID| = 0.2V, VCM= +1.2V, fIN= 1.34GHz, TA= +25°C, unless otherwise noted.)

SUPPLY CURRENT

vs. TEMPERATURE

MAX9392 toc01

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

603510-15

55

60

65

70

75

80

50

-40 85

VCC = 3.6V

VCC = 3.0V

VCC = 3.3V

0

150

100

50

200

250

350

300

400

0 0.4 0.60.2 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4

OUTPUT AMPLITUDE vs. FREQUENCY

MAX9392 toc02

FREQUENCY (GHz)

OUTPUT AMPLITUDE (mV)

OUTPUT RISE AND FALL TIMES

vs. TEMPERATURE

MAX9392 toc03

TEMPERATURE (°C)

RISE/FALL TIME (ps)

603510-15

130

140

150

160

170

180

120

-40 85

fIN = 100MHz

t

F

t

R

350

380

370

360

390

400

410

420

430

440

450

-40 10-15 35 60 85

PROPAGATION DELAY

vs. TEMPERATURE

MAX9392 toc04

TEMPERATURE (°C)

PROPAGATION DELAY (ps)

MAX9392

DIFFERENTIAL INPUT CURRENT

vs. TEMPERATURE

MAX9392 toc05

TEMPERATURE (°C)

INPUT CURRENT (μA)

603510-15

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

5

10

-50

-40 85

VIN = 3.0V

VIN = 0.1V

MAX9393

DIFFERENTIAL INPUT CURRENT

vs. TEMPERATURE

MAX9392 toc06

TEMPERATURE (°C)

INPUT CURRENT (μA)

603510-15

10

20

30

40

50

60

70

0

-40 85

VIN = 3.2V

VIN = 0.3V

MAX9392

INPUT CURRENT vs. V

IHD

MAX9392 toc07

V

IHD

(V)

INPUT CURRENT (μA)

3.33.02.4 2.70.6 0.9 1.2 1.5 1.8 2.10.3

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

5

10

-50
0 3.6

VCC = 3V

IN_ _ OR IN_ _ = GND

VCC = 3.6V

MAX9393

INPUT CURRENT vs. V

ILD

MAX9392 toc08

V

ILD

(V)

INPUT CURRENT (μA)

3.33.02.4 2.70.6 0.9 1.2 1.5 1.8 2.10.3

0

10

20

30

40

50

60

70

80

-10
0 3.6

VCC = 3V

VCC = 3.6V

IN_ _ OR IN_ _ = V

CC

MAX9392/MAX9393

Anything-to-LVDS Dual 2 x 2

Crosspoint Switches

_______________________________________________________________________________________ 5

Pin Description

PIN NAME FUNCTION

1, 12,

20, 25

5, 16,

24, 29

GND Ground

2 INB0

3 INB0

4 BSEL0

V

CC

6 INB1

7 INB1

LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Noninverting Input. An internal 128kΩ resistor to V
the input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).

LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Inverting Input. An internal 128kΩ resistor to V
input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).

Input Select for B0 Output. Selects the differential input to reproduce at the B0 differential outputs. Connect
BSEL0 to GND or leave open to select the INB0 (INB0) set of inputs. Connect BSEL0 to VCC to select the INB1
(INB1) set of inputs. An internal 435kΩ resistor pulls BSEL0 low when unconnected.

Power-Supply Input. Bypass each VCC to GND with 0.1µF and 0.01µF ceramic capacitors. Install both bypass
capacitors as close to the device as possible, with the 0.01µF capacitor closest to the device.

LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Noninverting Input. An internal 128kΩ resistor to V
the input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).

LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Inverting Input. An internal 128kΩ resistor to V
input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).

pulls

CC

pulls the

CC

pulls

CC

pulls the

CC

8 BSEL1

9 ENB1

10 OUTB1

11 OUTB1

13 ENB0

14 OUTB0

15 OUTB0

Input Select for B1 Output. Selects the differential input to reproduce at the B1 differential outputs. Connect
BSEL1 to GND or leave open to select the INB0 (INB0) set of inputs. Connect BSEL1 to V
(INB1) set of inputs. An internal 435kΩ resistor pulls BSEL1 low when unconnected.

B1 Output Enable. Drive ENB1 high to enable the B1 LVDS outputs. An internal 435kΩ resistor pulls ENB1 low
when unconnected.

B1 LVDS Inverting Output. Connect a 100Ω termination resistor between OUTB1 and OUTB1 at the receiver
inputs to ensure proper operation.

B1 LVDS Noninverting Output. Connect a 100Ω termination resistor between OUTB1 and OUTB1 at the receiver
inputs to ensure proper operation.

B0 Output Enable. Drive ENB0 high to enable the B0 LVDS outputs. An internal 435kΩ resistor pulls ENB0 low
when unconnected.

B0 LVDS Inverting Output. Connect a 100Ω termination resistor between OUTB0 and OUTB0 at the receiver
inputs to ensure proper operation.

B0 LVDS Noninverting Output. Connect a 100Ω termination resistor between OUTB0 and OUTB0 at the receiver
inputs to ensure proper operation.

to select the INB1

CC