HMC748LC3C
v03.1010
14 Gbps, 2:1 SELECTOR w/ PROGRAMMABLE
OUTPUT VOLTAGE & POSITIVE SUPPLY
Typical Applications
Features
The HMC748LC3C is ideal for:
• 2:1 Multiplexer up to 14 Gbps
• RF ATE Applications
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.
3
• Broadband Test & Measurement
• Serial Data Transmission up to 14 Gbps
• Redundant Path Switching
• Built-in Test
Programmable Differential
Output Voltage Swing: 600 - 1200 mV
Propagation Delay: 125 ps
Single Supply: +3.3 V
16 Lead Ceramic 3x3 mm SMT Package: 9 mm2
General Description
Functional Diagram
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.
Electrical Specifications, TA = +25 °C, Vcc = 3.3 V, VR = 3.3 V
Parameter
Conditions
Min.
Typ.
3.3
76
Max
3.6
Units
V
Power Supply Voltage
3.0
Power Supply Current
mA
Maximum Data Rate
14
Gbps
GHz
Gbps
Maximum Select Rate
14
Maximum Serial Transmission Rate
26
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 - 1