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Oki Semiconductor
KGL4205
10-Gbps GaAs D-Flip Flop IC
INTRODUCTION
Oki Semiconductor's KGL4205 is a 10-Gbps D-Flip Flop IC designed for ultra high-speed digital
communications systems. The KGL4205 uses 0.2-m gate length GaAs MESFETs and Oki's unique MCFF
( Memory Cell type Flip Flop ) technology to achieve operations of 10-GHz or more. The KGL4205 is
available as a 24-pin ceramic packaged device. Due to the KGL4205's high sensitivity, capacitive
coupling is recommended for IC's DA and CK connections.
FEATURES
High-speed operation: 10-Gbps data rate (typ)
Low-power dissipation: 340 mW (typ.) using 2-V power-supply
0.2-m gate length GaAs MESFET process
MCFF ( Memory Cell type Flip Flop ) technology
24-pin ceramic package
APPLICATION
High-speed optical communication systems: 10 Gbps
High-speed test equipment
s
KGL4205
s
2
Oki Semiconductor
BLOCK DIAGRAM
ELECTRICAL CHARACTERISTICS
Exceeding these maximum ratings could cause immediate damage or lead to permanent deterioration of the device.
Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Units
Supply Voltage
V
DD
, V
B
-0.3
2.3
V
Data, Clock Input Voltage
V
DI
, V
CI
-0.3
1.5
V
Temperature at Package Base Under Bias
Ts
-45
100
C
Storage Temperature
Tst
-45
125
C
Electrical Characteristics
V
DD
= 2 V 0.1 V, Ts = 0C to 70C
Parameter
Symbol
Min.
Typ.
Max.
Units
Operating Data Bit Rate Range
DAR
10
Gbps
Power Dissipation
PW
0.34
0.38
W
High-Level Data, Clock Input Voltage
VIH
0.6
0.9
1.25
V
Low-Level Data, Clock Input Voltage
VIL
-0.1
0.1
0.3
V
High-Level
Output Voltage ( Q, QN )
VOH
0.65
0.9
1.2
V
Low-Level Output Voltage ( Q, QN )
VOL
0
0.1
0.2
V
Output ( Q, QN ) Rise time and Fall time
TRF
30
40
ps
Phase Margin @ 10 Gbps (2
23
-1 PRBS)
TOM
240
degree
DR
DA
50
CR
CK
50
QN
V
DD
V
DD
DA
Data Input Terminals
CK
Clock Input Terminals
DR, CR
Output Reference Voltage Terminals
Q, QN
Complimentary Data Outputs
VDD
Power Supply of Internal Circuit
V
DD
V
DD
Q
V
DD
C
C
D
D
Q
Q
D-Flip Flop
(MCFF)
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