For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343

Fax: 978-250-3373

Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

3

3 - 1

The HMC748LC3C is a 2:1 Selector designed to sup-

port data transmission rates of up to 14 Gbps, and

selector port operation of up to 14 GHz. The selector

routes one of the two single-ended inputs to the

differential output upon assertion of the proper select

port. The HMC748LC3C also features an output level

control pin, VR, that allows for loss compensation or

for signal level optimization.

All select differential inputs to the HMC748LC3C are

CML and terminated on-chip with 50 Ohms to the

positive supply, Vcc, and may be AC or DC coupled.

The single-ended inputs to the HMC748LC3C are

CML terminated on-chip with 50 Ohms to the positive

supply, GND, and may be DC coupled. The differential

CML outputs are source terminated to 50 Ohms

and may also be AC or DC coupled. Outputs can

be connected directly to a 50 Ohm Vcc terminated

system, while DC blocking capacitors may be used

if the terminating system is 50 Ohms to ground. The

HMC748LC3C operates from a single + 3.3 V supply

and is available in ROHS-compliant 3x3 mm SMT

package.

General Description

HMC748LC3C

Features

Functional Diagram

Supports High Data Rates: up to 14 Gbps

Single-ended inputs

Differential & Single-Ended Outputs

Fast Rise and Fall Times: 22 / 22 ps

Low Power Consumption: 250 mW typ.

Programmable Differential

Output Voltage Swing: 600 - 1200 mV

Propagation Delay: 125 ps

Single Supply: +3.3 V

Typical Applications

The HMC748LC3C is ideal for:

• 2:1 Multiplexer up to 14 Gbps

• RF ATE Applications

• Broadband Test & Measurement

• Serial Data Transmission up to 14 Gbps

• Redundant Path Switching

• Built-in Test

Parameter

Conditions

Min.

Typ.

Max

Units

Power Supply Voltage

3.0

3.3

3.6

V

Power Supply Current

76

mA

Maximum Data Rate

14

Gbps

Maximum Select Rate

14

GHz

Maximum Serial Transmission Rate

26

Gbps

14 Gbps, 2:1 SELECTOR w/ PROGRAMMABLE

OUTPUT VOLTAGE & POSITIVE SUPPLY

v03.1010