10

10 - 180

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20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

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Truth Table

Bias Voltage & Current

Control Voltages

TTL Interface Circuit

Note:

Control inputs A, B, and C can be driven directly with TTL logic with -5 Volts applied to the HCT logic gates Vee pin and to Vee

(pin 8) of the RF Switch.

Control Input

Signal Path State

AB

C

RFCOM to:

High

High

High

RF1

Low

High

High

RF2

High

Low

High

RF3

Low

Low

High

RF4

High

High

Low

RF5

Low

High

Low

RF6

High

Low

Low

RF7

Low

Low

Low

RF8

Vee Range = -5.0 Vdc ± 10%

Vee

(Vdc)

Iee (Typ.)

(mA)

Iee (Max.)

(mA)

-5.0

5.0

9.0

State

Bias Condition

Low

-3V to 0 Vdc @ 25 uA Typical

High

-5 to -4.2 Vdc @ 5 uA Typical

GaAs MMIC SP8T NON-REFLECTIVE

SWITCH, DC - 8 GHz

v05.1205