HDMP-1024 datasheet(13/40 Pages) HP

13 / 40 page

628

I/O Type Definitions

I/O Type

Definition

I-TTL

Input TTL. Floats high when left open.

O-TTL

Output TTL.

O-BLL

Ω matched output driver. Will drive AC coupled 50 Ω loads, with 150 Ω pull-up resistors

for broad band matching. All unused outputs should have 150

Ω pull-up resistors, and AC

coupled to a 50

Ω resistor to ground.

I-H50

Input with internal 50

Ω terminations. Input is diode level shifted so that it can swing around

power. Can be driven with single-end configuration. Commonly used with input single-end AC

coupling from an O-BLL driver or another 50

Ω source, or differential direct coupling from

an O-BLL driver.

Filter capacitor node.

Power supply or ground.

HDMP-1022 (Tx)

Thermal Characteristics, TA = 25°C, VCC = 5 V

Symbol

Parameter

Units

Typ.

Thermal Resistance, Junction to Air. Measured in still air with the package

°C/Watt

mounted on a thermal test PCB per JEDEC standard JC -15.1

Thermal Resistance, Junction to Case. Top center of the package is used as

°C/Watt

the reference point

Power Dissipation, VCC = 5 Volts

Watt

1.9

HDMP-1024 (Rx)

Thermal Characteristics, TA = 25°C, VCC = 5 V

Symbol

Parameter

Units

Typ.

Thermal Resistance, Junction to Air. Measured in still air with the package

°C/Watt

mounted on a thermal test PCB per JEDEC standard JC -15.1

Thermal Resistance, Junction to Case. Top center of the package is used as

°C/Watt

the reference point

Power Dissipation, VCC = 5 Volts

Watt

2.5

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