AK8180C Datasheet, PDF (6/12 Pages) Asahi Kasei Microsystems – 2.5V, 3.3V LVCMOS 1:12 Clock Fanout Buffer

AK8180C
(1) AC characteristics apply for parallel output termination of 50  to VTT.
(2) Vcmr(AC) is the crosspoint of the differential input signal. Normal AC operation is obtained when the crosspoint is within
the Vcmr range and the input swing lies within the Vpp(AC) specification. Violation of Vcmr or Vpp impacts tPLH/PHL and tskD.
(3) Violation of the 1.0 ns maximum input rise and fall time limit will affect the device propagation delay, devi ce-to-device skew,
input pulse width, output duty cycle and maximum frequency specifications .
(4) Output pulse skew tskO is the absolute difference of the propagation delay times:| tPLH - tPHL |.
Power Supply Current <2.5V>
VDD= 2.5V5%, Ta: -40 to +85℃
Parameter
Full operation ⁽¹⁾
Quiescent state ⁽¹⁾⁽²⁾
Symbol
Conditions
2.5V5%,
IDD2.5-1 CCLK0=350MHz
CLK_SEL=L
IDD2.5-2
Min
Typ
Max Unit
115
134 mA
0.7
1.3 mA
(1) The outputs have no loads. (2) All inputs are in default state by the internal pull up/down resisters.
DC Characteristics <2.5V>
All specifications at VDD= 2.5V5%, Ta: -40 to +85℃, unless otherwise noted
Parameter
Symbol
Conditions
MIN
TYP
MAX Unit
High Level Input Voltage
Low Level Input Voltage
Peak-to-Peak Input Voltage
Common Mode Range ⁽¹⁾
Input Current ⁽²⁾
High Level Output Voltage
Low Level Output Voltage
Output Impedance
VIH
VIL
Vpp
Vcmr
IL1
VOH
VOL
LVCMOS
LVCMOS
LVPECL
LVPECL
Vin=GND or VDD
IOH= -15mA ⁽³⁾
IOL= +15mA ⁽³⁾
1.7
-0.3
250
1.0
-300
1.8
VDD+0.3 V
0.7
V
mV
VDD-0.7 V
+300 μA
V
0.6
V
19

(1) Vcmr(DC) is the crosspoint of the differential input signal. Functional operation is obtained when the crosspoint is w ithin the
Vcmr range and the input swing lies within the Vpp(DC) specification.
(2) Input pull-up / pull down resistors influence input current.
(3) The AK8180C is capable of driving 50  transmission lines of the incident edge. Each output drives one 50  parallel
terminated transmission line to a termination voltage of VTT. Alternatively, the device drives up to two 50  series
terminated transmission lines(for VDD=3.3V) or one 50  series terminated transmission lines(for VDD=2.5V).
AC Characteristics <2.5V> ⁽¹⁾
All specifications at VDD= 2.5V5%, Ta: -40 to +85℃, unless otherwise noted
Parameter
Symbol
Conditions
MIN
Input Frequency
fIN
Pin: CCLK, PCLKp/n
0
Input Pulse Width
tpwIN
Pin: CCLK, PCLKp/n
1.4
Peak-to-Peak Input Voltage Vpp
Pin: PCLKp/n
400
Common Mode Range ⁽²⁾ Vcmr Pin: PCLKp/n
1.2
Input Rise/Fall time ⁽³⁾
trIN,tfOUT Pin: CCLK 0.8 to 2.0V
Output Frequency
fOUT
Pin: Q0-11
0
tPLH
PCLK to any Q
1.0
Propagation Delay
tPHL
CCLK to any Q
0.9
Output Disable Time
tPLZ,tPHZ
Output Enable Time
tPZL,tPZH
(continued on next page)
TYP
MAX Unit
350 MHz
ns
1000 mV
VDD-0.8
1.0
ns
350 MHz
1.9
3.7
ns
1.8
3.6
11
ns
11
ns
May-2011
MS1305-E-00
-6 -