For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
HIGH SPEED LOGIC - SMT
1
HMC857LC5
v04.0914
14 Gbps, 2 x 2 CROSSPOINT SWITCH
WITH PROGRAMMABLE OUTPUT VOLTAGE
The HMC857LC5 is a 2x2 Crosspoint Switch desig-
ned to support data transmission rates of up to
14 Gbps and selector port operation up to 14 GHz.
The selector routes the differential inputs to either
one or both of the desired outputs upon assertion of
the appropriately selected port.
All differential inputs to the HMC857LC5 are CML
and terminated on-chip with 50 Ohms to the positive
supply, GND, and may be DC or AC coupled. Outputs
can be connected directly to a 50 Ohm ground-
terminated system or drive devices with CML logic
input. The HMC857LC5 also features an output level
control pin, VR, which allows for loss compensation or
signal level optimization. The HMC857LC5 operates
from a single -3.3 V supply and is available in ROHS-
compliant 3x3 mm SMT package.
General Description
Features
Functional Diagram
Supports High Data Rates: up to 14 Gbps
Differential or Single-Ended Inputs / Outputs
Fast Rise and Fall Times: 21 / 21 ps
Low Power Consumption: 345 mW typ.
Programmable Differential
Output Voltage Swing: 475 - 1200 mVp-p
Propagation Delay: 117 ps
Single Supply: -3.3 V
32 Lead Ceramic 5 x 5 mm SMT Package: 25 mm2
Typical Applications
The HMC857LC5 is ideal for:
• SONET OC-192 and 10 GbE
• 16G Fiber Channel
• Networking & Storage
• Dual 2:1 Selector
• 1:2 Fanout with Input Mux
Electrical Specications, TA = +25 °C, Vee = -3.3 V, Vr = 0 V
Parameter Conditions Min. Typ. Max Units
Power Supply Voltage -3.6 -3.3 -3.0 V
Power Supply Current 105 mA
Maximum Data Rate 14 Gbps
Maximum Select Rate 14 GHz
Input Voltage Range -1.5 0.5 V
Input Differential Range 0.1 2.0 Vp-p
Input Return Loss Frequency <20 GHz 10 dB
Output Amplitude Single-Ended, peak-to-peak 500 mVp-p
Differential, peak-to-peak 1000 mVp-p
Output High Voltage -10 mV
Output Low Voltage -510 mV
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
HIGH SPEED LOGIC - SMT
2
HMC857LC5
v04.0914
14 Gbps, 2 x 2 CROSSPOINT SWITCH
WITH PROGRAMMABLE OUTPUT VOLTAGE
Electrical Specications (continued)
Parameter Conditions Min. Typ. Max Units
Output Rise / Fall Time Differential, 20% - 80% 21 ps
Output Return Loss Frequency <22 GHz 10 dB
Random Jitter, Jr rms [1] 0.08 0.11 ps rms
Deterministic Jitter, Jd peak-to-peak, 215-1 PRBS input [1] 2 ps, p-p
Propagation Delay, A or B to DOUT, td 117 ps
Propagation Delay Select to Data, tds 114 ps
Set Up & Hold Time, tSH 5ps
DC Current vs. Supply Voltage [1][2]
[1] VR = 0.0 V [2] Frequency = 13 GHz [3] Vee = -3.3 V
Output Differential Voltage
vs. Supply Voltage [1][2] Output Differential Voltage vs. VR [2][3]
DC Current vs. VR [2][3]
80
90
100
110
120
130
140
-3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9
+25C
+85C
-40C
DC CURRENT (mA)
SUPPLY VOLTAGE (V)
70
75
80
85
90
95
100
105
110
-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2
+25C
+85C
-40C
DC CURRENT (mA)
VR (V)
500
600
700
800
900
1000
1100
1200
1300
1400
1500
-3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9
+25C
+85C
-40C
VOUT DIFFERENTIAL (mVp-p)
SUPPLY VOLTAGE (V)
400
500
600
700
800
900
1000
1100
1200
1300
1400
-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4
+25C
+85C
-40C
VOUT DIFFERENTIAL (mVp-p)
VR (V)
[1] Added jitter calculated by de-embedding the source’s jitter at 13 Gbps, 215 -1 PRBS input.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
HIGH SPEED LOGIC - SMT
3
HMC857LC5
v04.0914
14 Gbps, 2 x 2 CROSSPOINT SWITCH
WITH PROGRAMMABLE OUTPUT VOLTAGE
Select Input Return Loss vs. Frequency [1] [3] [4]
Output Return Loss vs. Frequency [1] [3] [4]
Data Input Return Loss vs. Frequency [1] [3] [4]
Response vs. Input Power [1] [3] [5]
Rise / Fall Time vs. VR [2] [3]
[1] VR = 0.0 V [2] Frequency = 13 GHz [3] Vee = -3.3 V [4] Device measured on evaluation board with gating
[5] Device measured on evaluation board with port extensions
Rise / Fall Time vs. Supply Voltage [1] [2]
16
18
20
22
24
26
-3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9
tr
tf
RISE/FALL TIME (ps)
SUPPLY VOLTAGE (V)
16
18
20
22
24
26
-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4
tr
tf
RISE/FALL TIME (ps)
VR (V)
-40
-35
-30
-25
-20
-15
-10
-5
0
5
0 3 6 9 12 15
RETURN LOSS (db)
Frequency (GHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
5
0 3 6 9 12 15
RETURN LOSS (db)
Frequency (GHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
5
0 3 6 9 12 15
RETURN LOSS (db)
Frequency (GHz)
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
0 3 6 9 12 15 18
-45dBm
-40dBm
-30dBm
-20dBm
-10dBm
AMPLITUDE (db)
FREQUENCY (GHz)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
HIGH SPEED LOGIC - SMT
4
HMC857LC5
v04.0914
14 Gbps, 2 x 2 CROSSPOINT SWITCH
WITH PROGRAMMABLE OUTPUT VOLTAGE
Isolation [1] [2] [3]
Eye Diagram
Timing Diagram Truth Table
Inputs Outputs
SB SA DP
X L IN0 ->A
X H IN1 ->A
L X IN0 ->B
H X IN1 -> B
H = Positive voltage level
L = Negative voltage level
Notes:
D = DP - DN
IN0 = IN0P - IN0N
IN1 = IN1P - IN1N
[1] Test Conditions:
Waveform generated with a differential 400 mV Agilent N4903A
J-Bert with a 13 Gbps PN 215 -1 signal.
Eye Diagram data presented on a Tektronix CSA 8000
[1] VR = 0.0 V [2] Device measured on evaluation board with port extensions [3] Vee = -3.3 V
-60
-40
-20
0
20
40
0 3 6 9 12 15 18
PORT B - ACTIVE
PORT A - ACTIVE
dB
FREQUENCY (GHz)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
HIGH SPEED LOGIC - SMT
5
HMC857LC5
v04.0914
14 Gbps, 2 x 2 CROSSPOINT SWITCH
WITH PROGRAMMABLE OUTPUT VOLTAGE
Absolute Maximum Ratings
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
Power Supply Voltage (Vee) -3.75 V to +0.5 V
Input Signals -2.0 V to 0.5 V
Output Signals -1.5 V to 0.5 V
Junction Temperature 125 °C
Continuous Pdiss (T = 85 °C
(derate 33.0 mW/°C above 85 °C) 1.33 W
Thermal Resistance (Rth j-p)
Worst case device to package paddle 30 °C/W
Storage Temperature -65 °C to +150 °C
Operating Temperature -40 °C to +85 °C
ESD Sensitivity (HBM) Class 1B
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA
2. LEAD AND GROUND PADDLE PLATING:
30-80 MICROINCHES GOLD OVER 50 MICROINCHES MINIMUM NICKEL.
3. DIMENSIONS ARE IN INCHES [MILLIMETERS].
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm DATUM -C-
6. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
7. PADDLE MUST BE SOLDERED TO Vee.
Package Information
Part Number Package Body Material Lead Finish MSL Rating Package Marking [2]
HMC857LC5 Alumina, White Gold over Nickel MSL3 [1] H857
XXXX
[1] Max peak reow temperature of 260 °C
[2] 4-Digit lot number XXXX
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
HIGH SPEED LOGIC - SMT
6
HMC857LC5
v04.0914
14 Gbps, 2 x 2 CROSSPOINT SWITCH
WITH PROGRAMMABLE OUTPUT VOLTAGE
Pin Number Function Description Interface Schematic
1, 4, 5, 8, 11, 14,
17, 20, 21, 24 GND Signal Grounds
2, 3,
6, 7
In0+, In0-,
In1+, In1-
Differential Inputs: Current Mode Logic (CML)
referenced to positive supply.
9, 10,
15, 16
SelB+, SelB-,
SelA+, SelA-
Differential Select Inputs: Current Mode Logic (CML)
referenced to positive supply.
12, 13, 25, 29,
32 N/C No connection necessary. These pins may be connected to
RF/DC ground without affecting performance.
18, 19,
22, 23
OutB-, OutB+,
OutA-, OutA+
Differential Outputs: Current Mode Logic (CML)
referenced to positive supply.
26, 31 GND Supply Ground
27, 30
Package Base Vee These pins and the exposed paddle must be
connected to the negative voltage supply.
28 VR
Output level control. Output level may be increased
or decreased by applying a voltage to VR per “Output
Differential vs. VR” plot.
Pin Descriptions
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
HIGH SPEED LOGIC - SMT
7
HMC857LC5
v04.0914
14 Gbps, 2 x 2 CROSSPOINT SWITCH
WITH PROGRAMMABLE OUTPUT VOLTAGE
Evaluation PCB
List of Materials for Evaluation PCB 126968 [1]
Item Description
J1 - J6, J9 - J14 PCB Mount SMA RF Connectors
J15 - J20 DC Pin
JP1 0.1” Header with Shorting Jumper
C1, C2 4.7 µF Capacitor, Tantalum
C3 - C5 330 pF Capacitor, 0402 Pkg.
R1 10 Ohm Resistor, 0603 Pkg.
U1 HMC857LC5 2 x 2 Crossbar Switch
PCB [2] 126966 Evaluation Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR or Rogers 4350
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package gro-
und leads should be connected directly to the
ground plane similar to that shown. The exposed
package base should be connected to Vee. A suffi-
cient number of via holes should be used to connect
the top and bottom ground planes. The evaluation
circuit board shown is available from Hittite upon
request. Install jumper on JP1 to short VR to GND
for normal operation.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
HIGH SPEED LOGIC - SMT
8
HMC857LC5
v04.0914
14 Gbps, 2 x 2 CROSSPOINT SWITCH
WITH PROGRAMMABLE OUTPUT VOLTAGE
Application Circuit
