Note 2:

Defined as the DC offset shift when switching between input channels for a given output.

Note 3:

——————————––————————————

4

—

V

————————————————————

Note 4:

———————————————————————

2

—

V

——————————————————————

Note 5:

Note 6:

Differential phase and gain measured with a 40 IRE (285.7mV), 3.58MHz sine wave superimposed on a linear ramp of 0 IRE

to 100 IRE (714.3mV). “The IRE scale is a linear scale for measuring, in arbitrary IRE units, the relative amplitudes of the var-

ious components of a television signal” (from the “Television Engineering Handbook”, edited by K. Blair Benson, McGraw

Hill). This system defines 100 IRE as reference white, 0 IRE as the blanking level, and -40 IRE as the sync peak. The equip-

ment used for the test signal generated 714.3mV (100 IRE) as reference white and -285.7mV (-40 IRE) as sync. The modu-

lation used was 285.7mV (40 IRE), which conforms to the EIA color signal standards.

Note 7:

For MAX458, step input from +2V to 0V; for MAX459, step input from +1V to 0V. All unused channels grounded and all

unused amplifiers disabled.

Note 8:

Test input channel programmed to an output and grounded through a 75

Ω resistor. Adjacent input is programmed to an

adjacent output and driven by a 10MHz, 4Vp-p sine wave.

Note 9:

Same as Note 6 above, except driven input and output are not adjacent to test input/output.

Note 10: All inputs but the test input are driven by a 10MHz 4Vp-p sine wave. All outputs except the test output are connected to driven inputs.

Note 11: Same as Note 9 above, except with test channel programmed off.

8x4 Video Crosspoint Switches with Buffers

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(Note 11)

(Note 3)

(Note 10)

(Note 3)

(Note 9)

(Note 8)

See

Typical Operating Characteristics

To 0.1% of final value (Note 7)

f = 10kHz

MAX458

MAX459

CONDITIONS

dB

-60

All-Hostile Off Isolation

dB

-55

All-Hostile Crosstalk

dB

-65

Non-Adjacent Channel Crosstalk

dB

-65

Adjacent Channel Crosstalk

100

Switching Transient Glitch

ns

50

Channel Switching Propagation Delay

ns

60

Channel Switching Time

ns

120

Amplifier Enable Time

V

4.0

Logic Output High Voltage

µA

10

µA

10

Logic Input High Current

Logic Input Low Current

ns

100

Amplifier Disable Time

ns

40

Settling Time

nV/

√Hz

20

Input Noise Density

V

0.5

Logic Output Low Voltage

%

0.01

DG

Differential Gain Error (Note 6)

0.13

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

MAX458

MAX459

degrees

0.05

DG

Differential Phase Error (Note 6)

0.14

MAX458

V/µs

200

SR

Slew Rate

150

Positive transition

Negative transition

MAX459

300

250

Positive transition

Negative transition

MHz

100

BW

Bandwidth (-3dB)

90

DYNAMIC SPECIFICATIONS