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

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3 - 1

The HMC854LC5 is a 4:1 multiplexer designed for

28Gbps data serialization. The mux latches the four

differential inputs on a rising edge of the input clock.

The device uses both rising and falling edges of the

half-rate clock to serialize the data. A quarter-rate clock

output generated on chip can be used to synchronize

data into the mux. The mux is DC coupled supporting

broadband operation.

All clock and data inputs to the HMC854LC5 are CML

and terminated on-chip with 50 Ohms to the positive

supply, GND, and may be DC or AC coupled. The

differential outputs are source terminated to 50 Ohms

and may also be AC or DC coupled. Outputs can be

connected directly to a 50 Ohm ground terminated

system, or drive devices with CML logic input. The

HMC854LC5 also features an output level control pin,

VR, which allows for loss compensation or signal level

optimization. The HMC854LC5 operates from a single

-3.3V supply and is available in ROHS compliant 5x5

mm SMT package.

General Description

HMC854LC5

Features

Functional Diagram

Differential & Singe-Ended Operation

Half Rate Clock Input

Quarter Rate Reference Clock Output

Fast Rise and Fall Times: 16 ps

Low Power Consumption: 510 mW typ.

Programmable Differential

Output Voltage Swing: 700 - 1250 mV

Single Supply: -3.3V

Typical Applications

The HMC854LC5 is ideal for:

• SONET OC 192

• Broadband Test & Measurement

• Serial Data Transmission up to 28 Gbps

• Mux modes:

4:1 @ 28 Gbps NRZ,

2:1 @ 14 Gbps RZ and NRZ

• FPGA Interfacing

Parameter

Conditions

Min.

Typ.

Max

Units

Power Supply Voltage

T > 75 °C

-3.6

-3.45

-3.3

-3.0

V

V

Power Supply Current

155

mA

Maximum Data Rate

28

Gbps

Maximum Clock Rate, Half Rate

14

GHz

Input Voltage Range, CML

-1.5

0.5

V

Input Differential Voltage

100

2000

mV

Output Rise / Fall Time

Differential, 20% - 80%

16

ps

Random Jitter Jr

rms

0.5

ps rms

Deterministic Jitter, Jd

4

ps, p-p

28 Gbps, 4:1 MUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

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