HMC677G32 Datasheet, PDF (4/8 Pages) Hittite Microwave Corporation – 6-Bit SERIAL/PARALLEL SWITCH DRIVER/CONTROLLER

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HMC677G32
6-Bit SERIAL/PARALLEL SWITCH
DRIVER/CONTROLLER
Power-Up States
Power-On Sequence
If LE is set to logic LOW at power-up, the logic state
of PUP1 and PUP2 determines the power-up state of
the part per PUP truth table. If the LE is set to logic
HIGH at power-up, the logic state of I5-I0 determines
the power-up state of the part per truth table. The
attenuator latches in the desired power-up state
approximately 200 ms after power-up.
The required power-up sequence is: GND, Vdd, Vee,
Voph, Digital Inputs (I₀ - I₅). The relative application
of input signal order of the digital inputs are not
important. Deviations from this sequence may
inadvertently forward bias ESD protection structures
and damage them. For added protection you may
install 2 kOhm resistors in series with each digital
input signal line, however these resistors will increase
the RC time constant.
5
Control Voltage Table
Truth Table
State
Low
High
Vdd = +5V
0 to 0.8V @ <1 µA
2 to 5V @ <1 µA
Input
Ix
Low
High
Bx
Vee
Voph
Outputs
BxB
Voph
Vee
PUP Truth Table
Output States
LE
PUP2
PUP1
B5
B4
B3
B2
B1
B0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
1
0
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
X
X
Set by the inputs Ix
For the Inputs (LE, PUP1, PUP2), Logic “0” = 0V and Logic “1” = Vdd
For the outputs, Logic “0” is Bx = Vee, BxB = Voph, and Logic “1” is Bx = Voph, BxB = Vee
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]
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