SY87721LHG Micrel Inc, SY87721LHG Datasheet - Page 12

• Manufacturer Part Number: SY87721LHG
• Description: IC CLOCK/DATA RECOVERY 64-TQFP
• Manufacturer: Micrel Inc
• Type: Clock and Data Recovery (CDR)r

Specifications of SY87721LHG

• Input: Differential
• Output: Differential
• Frequency - Max: 340MHz
• Voltage - Supply: 3.15 V ~ 3.45 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP
• Frequency-max: 340MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Micrel, Inc.
Notes:
1. C11, C17, C10, C4, C2 = 0.1 F
2. C18, C12, C9, C3, C1 = 1 F
3. C2, C4, C10, C11, and C17 need to be located right at device pin. If vias
M9999-012508
[e-mail] or [phone]
VEE
VEE
EVALUATION BOARD SCHEMATIC
to power GND used—use overlapping multiple vias to lower inductance.
1
2
3
4
5
6
S3
HEADER
SW DIP-6
1
2
3
4
5
1
3
5
7
9
11
S1
SW DIP-5
6X2
10
12
2
4
6
8
12
10
9
8
7
JP1
11
VCC
10
9
8
7
6
VCCA
VCC
VEE
C18
C9
L7
L3
VCC
C17
R48,
20
C10
130
R47,
VEE
D1
D2
R7
R8
R9
R10
VCC
C5
C6
C7
C8
HEADER
1
3
5
3X2
VCC
2
4
6
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
JP4
1
2
3
4
5
S2
SW DIP-8
VCOSEL1
PLLRN+
PLLRN—
NC
PLLRW+
PLLRW—
NC
VCCA
GNDA
PLLSW—
PLLSW+
NC
PLLSN—
PLLSN+
NC
NC
10
9
8
7
6
VEE
5k
VCC
VCC
12
C3
L2
SY87721L
C4
C2
LED
D3
L1
C1
RDOUTE+
RDOUTE—
RDOUTC+
RDOUTC—
ENPECL
RCLKC+
RCLKE+
RCLKE—
RCLKC—
TCLKC+
TCLKE+
TCLKE—
TCLKC—
VCCO
VCCO
VCCO
GND
VCC
C11
R17,
1.7k
L4
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
VEE
VCCO: PIN 42
VCCO: PIN 37
C12
VEE: PIN 48
RDOUTE+
RDOUTE—
RDOUTC+
RDOUTC—
RCLKE+
RCLKE—
RCLKC+
TCLKE+
TCLKE—
TCLKC+
TCLKC—
RCLKC—
VCC
SY87721L
VCC
R16,
5k
VEE
JP2