AK8180E

AK8180E
2.5V, 3.3V LVCMOS 1:18
Clock Fanout Buffer
AK8180E
Features
Description
The AK8180E is a member of AKM’s LVCMOS
clock fanout buffer family designed for telecom,
networking and computer applications, requiring a
range of clocks with high performance and low
skew. The AK8180E distributes 18 buffered clocks
up to 200MHz. The 18 outputs can drive
terminated 50  clock lines. AK8180E are derived
from AKM’s long-term-experienced clock device
technology, and enable clock output to perform low
skew and to operate with very low current
consumption. The AK8180E is available in a 7mm
x 7mm 32-pin LQFP package.
18 LVCMOS outputs enable to drive up to 36
clock lines
LVCMOS/LVTTL input
2.5V or 3.3V power supply
Clock output frequency up to 200MHz
Output-to-output skew: 85ps (typical)
Output enable control
Operating Temperature Range: -40 to +85℃
Package: 32-pin LQFP (Pb free)
Pin compatible with CY29942, MPC942C
Block Diagram
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AK8180E
Pin Descriptions
Package: 32-Pin LQFP(Top View)
Pin No.
Pin Name
Pin
Type
pullup
/down
Description
1
VSS
PWR
Ground
2
VSS
PWR
Ground
3
TCLK
IN
PD
Clock Input (LVCMOS/LVTTL)
4
NC
--
PD
It should be connected to VSS or opened
Clock Output Enable
5
OE
IN
PU
High (open): clock outputs follow clock input
Low: clock outputs become high impedance
6
NC
--
7
VDD
PWR
PD
It should be connected to VSS or opened
Power Supply
8
VDD
PWR
Power Supply
9
Q17
OUT
Clock Output
10
Q16
OUT
Clock Output
11
Q15
OUT
Clock Output
12
VSS
PWR
Ground
13
Q14
OUT
Clock Output
14
Q13
OUT
Clock Output
15
Q12
OUT
Clock Output
16
VDD
PWR
Power Supply
(continue on next page)
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AK8180E
Pin No.
Pin Name
Pin
Type
Pullup
/down
Description
17
VSS
PWR
Ground
18
Q11
OUT
Clock Output
19
Q10
OUT
Clock Output
20
Q9
OUT
Clock Output
21
VDD
PWR
Power Supply
22
Q8
OUT
Clock Output
23
Q7
OUT
Clock Output
24
Q6
OUT
Clock Output
25
VSS
PWR
Ground
26
Q5
OUT
Clock Output
27
Q4
OUT
Clock Output
28
Q3
OUT
Clock Output
29
VDD
PWR
Power Supply
30
Q2
OUT
Clock Output
31
Q1
OUT
Clock Output
32
Q0
OUT
Clock Output
PWR: Power pin, IN: Input pin,
PU: Pull up,
PD: Pull down
OUT: Output pin
Ordering Information
Part Number
Marking
Shipping
Packaging
Package
Temperature
Range
AK8180E
AK8180E
Tape and Reel
32-pin LQFP
-40 to 85 ℃
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AK8180E
Absolute Maximum Rating
Over operating free-air temperature range unless otherwise noted
Items
(1)
Symbol
Ratings
Unit
Supply voltage
VDD
-0.3 to 4.6
V
Ground level
VSS
0
V
Input voltage
Vin
VSS-0.5 to VDD+0.5
V
Input current (any pins except supplies)
IIN
±10
mA
Tstg
-55 to 150
C
Storage temperature
Note
(1) Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
These are stress ratings only. Functional operation of the device at these or any other conditions beyond those
indicated under “Recommended Operating Conditions” is not implied. Exposure to absolute-maximum-rating
conditions for extended periods may affect device reliability. Electrical parameters are guaranteed only over the
recommended operating temperature range.
ESD Sensitive Device
This device is manufactured on a CMOS process, therefore, generically susceptible to
damage by excessive static voltage. Failure to observe proper handling and
installation procedures can cause damage. AKM recommends that this device is handled with
appropriate precautions.
Recommended Operation Conditions
Parameter
Operating temperature
Supply voltage
(1)
Symbol
Conditions
Ta
Min
Typ
Max
Unit
85
C
2.375
2.5
2.625
3.135
3.3
3.465
-40
VDD
VDD5%
(1) Power of 2.5V or 3.3V requires to be supplied from a single source.
power supply line should be located close to each VDD pin.
V
A decoupling capacitor of 0.1F for
General Specification
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Termination Voltage
VTT
VDD/2
V
Input Capacitance
CIN
4.0
pF
Input Pullup Resistor
RPU
51
kΩ
Input Pulldown Resistor
RPD
51
kΩ
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AK8180E
DC Characteristics
VDD = 3.3V5% or 2.5V5%, Ta: -40 to +85℃, unless otherwise noted
Parameter
Input High Voltage
Input Low Voltage
Input Current
(1), (2)
Symbol
Conditions
MIN
Unit
VDD+0.3
V
Pin: TCLK, OE
2.0
VIL
Pin: TCLK, OE
VSS-0.3
0.8
V
IIN
Pin: TCLK, OE
-200
200
μA
IOH= -20mA
(2), (3)
, VDD=3.3V
VOH
Output Low Voltage
VOL
IOL= +20mA
Quiescent Supply Current
IDDQ
OE=VSS, TCLK=H/L
IOH= -16mA
(2), (3)
, VDD=2.5V
2.4
2.0
0.1
CL=15pF
VDD=3.3V, Outputs at 200MHz
IDD
V
(2), (3)
VDD=3.3V, Outputs at 150MHz
CL=15pF
VDD=2.5V, Outputs at 150MHz
CL=15pF
VDD=2.5V, Outputs at 200MHz
CL=15pF
Output Impedance
MAX
VIH
Output High Voltage
Dynamic Supply Current
TYP
ZOUT
7
0.5
V
7
mA
285
mA
335
mA
200
mA
240
mA
22

(1) Inputs have pull-up / pull down resistors that effect input current.
(2) Polarity (-): Outgoing current from device.
Polarity (+): Incoming current to device.
(3) Driving series or parallel terminated 50Ω (or 50Ω to VTT) transmission lines.
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AK8180E
AC Characteristics <3.3V>
VDD = 3.3V5%, Ta: -40 to +85℃, unless otherwise noted
Parameter
Symbol
Input Frequency
fIN
Propagation Delay
tpd
Conditions
TCLK to any Q
(1), (2)
Output Duty Cycle
DCOUT
Measured at VTT
Output-to-Output Skew
tskpp
(1), (2),
Part-to-Part Skew
(4)
tskD1
Part-to-Part Skew
(5)
tskD2
Output Rise/Fall Time
tr , tf
(1), (2), (3)
MIN
TYP
0.8V to 2.0V
Unit
200
MHz
0.9
2.5
ns
45
55
%
200
ps
1.6
ns
600
ps
0.6
ns
MAX
Unit
200
MHz
1.0
3.0
ns
45
55
%
200
ps
2.0
ns
600
ps
1.0
ns
85
(1), (2)
MAX
0.08
(1) Outputs driving 50Ω transmission lines.
(2) See Figure 1.
(3) 50% input duty cycle.
(4) Across temperature and voltage ranges, includes output skew.
(5) For a specific temperature and voltage, includes output skew.
AC Characteristics <2.5V>
VDD = 2.5V5%, Ta: -40 to +85℃, unless otherwise noted
Parameter
Input Frequency
Symbol
Conditions
MIN
TYP
fIN
Propagation Delay
Output Duty Cycle
Output-to-Output Skew
tpd
DCOUT
Measured at VTT
tskpp
(1), (2),
Part-to-Part Skew
(4)
tskD1
Part-to-Part Skew
(5)
tskD2
Output Rise/Fall Time
TCLK to any Q
(1), (2)
tr , tf
0.5V to 1.8V
(1), (2), (3)
85
(1), (2)
0.15
(1) Outputs driving 50Ω transmission lines.
(2) See Figure 1.
(3) 50% input duty cycle.
(4) Across temperature and voltage ranges, includes output skew.
(5) For a specific temperature and voltage, includes output skew.
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AK8180E
AK8180E DUT
Pulse
Generator
Z = 50
Zo = 50
Zo = 50
RT = 50
RT = 50
VTT
Figure 1.
Figure 2.
VTT
LVCMOS_CLK Test Reference
LVCMOS Propagation Delay (tpd) Test Reference
Figure 3. Output Duty Cycle (DCOUT)
Figure 4. Output-to-Output Skew (tskpp)
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AK8180E
Function Table
The following table shows the inputs/outputs clock state configured through the control pins.
Table 1: Control Input Function Table
Input
Output
OE
Q0:Q17
L
Disabled (high impedance)
H
Enabled
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AK8180E
Package Information
 Mechanical data :
32-lead LQFP
9.00±0.20
7.00
17
25
16
32
9
7.00
0.80
8
0.37±0.05
0.20
M
0゜~7゜
1.60MAX
1
1.35~1.45
9.00±0.20
24
0.60±0.10
0.10 S
MS1511-E-00
0.05~0.15
0.09~0.20
S
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AK8180E
 Marking
a:
b:
c:
#1 Pin Index
Part number
Date code (7 digits)
(1) AKM is the brand name of AKM’s IC’s.
AKM and the logo -
- are the brand of AKM’s IC’s and identify that AKM
continues to offer the best choice for high performance mixed-signal solution under
this brand.
 RoHS Compliance
All integrated circuits form Asahi Kasei Microdevices Corporation (AKM)
assembled in “lead-free” packages* are fully compliant with RoHS.
(*) RoHS compliant products from AKM are identified with “Pb free” letter indication on
product label posted on the anti-shield bag and boxes.
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AK8180E
IMPORTANT NOTICE
 These products and their specifications are subject to change without notice.
When you consider any use or application of these products, please make inquiries the sales office of Asahi
Kasei Microdevices Corporation (AKM) or authorized distributors as to current status of the products.
 Descriptions of external circuits, application circuits, software and other related information contained in this
document are provided only to illustrate the operation and application examples of the semiconductor
products. You are fully responsible for the incorporation of these external circuits, application circuits,
software and other related information in the design of your equipments. AKM assumes no responsibility for
any losses incurred by you or third parties arising from the use of these information herein. AKM assumes
no liability for infringement of any patent, intellectual property, or other rights in the application or use of
such information contained herein.
 Any export of these products, or devices or systems containing them, may require an export license or other
official approval under the law and regulations of the country of export pertaining to customs and tariffs,
currency exchange, or strategic materials.
 AKM products are neither intended nor authorized for use as critical componentsNote1) in any safety, life
support, or other hazard related device or systemNote2), and AKM assumes no responsibility for such use,
except for the use approved with the express written consent by Representative Director of AKM. As used
here:
Note1) A critical component is one whose failure to function or perform may reasonably be expected to
result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system
containing it, and which must therefore meet very high standards of performance and reliability.
Note2) A hazard related device or system is one designed or intended for life support or maintenance of
safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to
function or perform may reasonably be expected to result in loss of life or in significant injury or damage to
person or property.
 It is the responsibility of the buyer or distributor of AKM products, who distributes, disposes of, or otherwise
places the product with a third party, to notify such third party in advance of the above content and
conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold
AKM harmless from any and all claims arising from the use of said product in the absence of such
notification.
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