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83905AMLF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
1©2016 Integrated Device Technology, Inc. Revision D September 27, 2016
General Description
The 83905 is a low skew, 1-to-6 LVCMOS / LVTTL Fanout Buffer.
The low impedance LVCMOS/LVTTL outputs are designed to
drive 50 series or parallel terminated transmission lines. The
effective fanout can be increased from 6 to 12 by utilizing the
ability of the outputs to drive two series terminated lines.
The 83905 is characterized at full 3.3V, 2.5V, and 1.8V, mixed
3.3V/2.5V, 3.3V/1.8V and 2.5V/1.8V output operating supply
mode. Guaranteed output and part-to-part skew characteristics
along with the 1.8V output capabilities makes the 83905 ideal for
high performance, single ended applications that also require a
limited output voltage.
Pin Assignments
Features
• Six LVCMOS / LVTTL outputs
• Outputs able to drive 12 series terminated lines
• Crystal Oscillator Interface
• Crystal input frequency range: 10MHz to 40MHz
• Output skew: 80ps (maximum)
• RMS phase jitter @ 25MHz, (100Hz – 1MHz): 0.26ps (typical),
V
DD
= V
DDO
= 2.5V
Offset Noise Power
100Hz.................-129.7 dBc/Hz
1kHz...................-144.4 dBc/Hz
10kHz.................-147.3 dBc/Hz
100kHz...............-157.3 dBc/Hz
• 5V tolerant enable inputs
• Synchronous output enables
• Operating power supply modes:
Full 3.3V, 2.5V, 1.8V
Mixed 3.3V core/2.5V output operating supply
Mixed 3.3V core/1.8V output operating supply
Mixed 2.5V core/1.8V output operating supply
• 0°C to 70°C ambient operating temperature
• Lead-free (RoHS 6) packaging
Block Diagram
6 7 8 9 10
19
20 18 17 16
1
2
3
4
5
13
14
15
12
11
GND
V
DDO
GND
B
CLK0
B
CLK1
BCLK
4
BCLK
5
VDDO
GND
GND
VDD
B
CLK2
GND
GND
B
CLK3
ENABLE1
ENABLE2
XTAL_IN
XTAL_OU
T
nc
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
XTAL_IN
ENABLE
1
BCLK5
V
DDO
BCLK4
GND
BCLK3
V
DD
BCLK2
GND
BCLK1
V
DDO
BCLK0
GND
ENABLE2
X
TAL_OUT
83905
16-Lead SOIC, 150 Mil
3.9mm x 9.9mm x 1.38mm
package body
M Package
Top View
16-Lead TSSOP
4.4mm x 5.0mm x 0.925mm
package body
G Package
Top View
83905
20-Lead VFQFN
4mm x 4mm x 0.925mm
package body
K Package
Top View
SYNCHRONIZE
SYNCHRONIZE
BCLK
0
BCLK
1
BCLK
2
BCLK
3
BCLK
4
BCLK
5
XTAL_IN
X
TAL_OUT
ENABLE 1
ENABLE 2
83905
Datasheet
Low Skew, 1:6 Crystal-to-LVCMOS/
LVTTL Fanout Buffer
2©2016 Integrated Device Technology, Inc. Revision D September 27, 2016
83905 Datasheet
Pin Descriptions and Characteristics
Table 1. Pin Descriptions
Table 2. Pin Characteristics
Function Table
Table 3. Clock Enable Function Table
Figure 1. Enable Timing Diagram
Name Type Description
XTAL_OUT Output Crystal oscillator interface. XTAL_OUT is the output.
XTAL_IN Input Crystal oscillator interface. XTAL_IN is the input.
ENABLE1, ENABLE2 Input Clock enable. LVCMOS/LVTTL interface levels. See Table 3.
BCLK0, BCLK1, BCLK2,
BCLK3, BCLK4, BCLK5
Output Clock outputs. LVCMOS/LVTTL interface levels.
GND Power Power supply ground.
V
DD
Power Power supply pin.
V
DDO
Power Output supply pin.
nc Unused No connect.
Symbol Parameter Test Conditions Minimum Typical Maximum Units
C
IN
Input Capacitance 4 pF
C
PD
Power Dissipation
Capacitance
(per output)
V
DDO
= 3.465V 19 pF
V
DDO
= 2.625V 18 pF
V
DDO
= 2.0V 16 pF
R
OUT
Output Impedance
V
DDO
= 3.3V ± 5% 7
V
DDO
= 2.5V ± 5% 7
V
DDO
= 1.8V ± 0.2V 10
Control Inputs Outputs
ENABLE 1 ENABLE2 BCLK[0:4] BCLK5
0 0 LOW LOW
0 1 LOW Toggling
1 0 Toggling LOW
1 1 Toggling Toggling
BCLK5
BCLK[0:4]
ENABLE2
ENABLE1
3©2016 Integrated Device Technology, Inc. Revision D September 27, 2016
83905 Datasheet
Absolute Maximum Ratings
NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are
stress specifications only. Functional operation of product at these conditions or any conditions beyond those listed in the DC
Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
product reliability.
DC Electrical Characteristics
Table 4A. Power Supply DC Characteristics, V
DD
= V
DDO
= 3.3V ± 5%, T
A
= 0°C to 70°C
Table 4B. Power Supply DC Characteristics, V
DD
= V
DDO
= 2.5V ± 5%, T
A
= 0°C to 70°C
Table 4C. Power Supply DC Characteristics, V
DD
= V
DDO
= 1.8V ± 0.2V, T
A
= 0°C to 70°C
Item Rating
Supply Voltage, V
DD
4.6V
Inputs, V
I
-0.5V to V
DD
+ 0.5V
Outputs, V
O
-0.5V to V
DDO
+ 0.5V
Package Thermal Impedance,
JA
16-Lead SOIC package
16-Lead TSSOP package
20-Lead VFQFN package
78.8C/W (0 mps)
100.3C/W (0 mps)
57.5C/W (0 mps)
Storage Temperature, T
STG
-65C to 150C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
DD
Power Supply Voltage 3.135 3.3 3.465 V
V
DDO
Output Supply Voltage 3.135 3.3 3.465 V
I
DD
Power Supply Current ENABLE [1:2] = 00 10 mA
I
DDO
Output Supply Current ENABLE [1:2] = 00 5 mA
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
DD
Power Supply Voltage 2.375 2.5 2.625 V
V
DDO
Output Supply Voltage 2.375 2.5 2.625 V
I
DD
Power Supply Current ENABLE [1:2] = 00 8 mA
I
DDO
Output Supply Current ENABLE [1:2] = 00 4 mA
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
DD
Power Supply Voltage 1.6 1.8 2.0 V
V
DDO
Output Supply Voltage 1.6 1.8 2.0 V
I
DD
Power Supply Current ENABLE [1:2] = 00 5 mA
I
DDO
Output Supply Current ENABLE [1:2] = 00 3 mA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

83905AMLF

Mfr. #:
Buy 83905AMLF
Manufacturer:
IDT
Description:
Clock Buffer Low Skew 1:5 Fanout Buffer
Lifecycle:
New from this manufacturer.
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