9DB233 Datasheet, PDF (5/14 Pages) Integrated Device Technology – Two Output Differential Buffer for PCIe Gen3

9DB233
Two Output Differential Buffer for PCIe Gen3
Datasheet
Electrical Characteristics - Clock Input Parameters
TA = T_COM or T_IND; Supply Voltage VDD = 3.3 V +/-5%
PARAMETER
SYMBOL
CONDITIONS
Input High Voltage - DIF_IN V_IHDIF
Differential inputs
(single-ended measurement)
Input Low Voltage - DIF_IN V_ILDIF
Differential inputs
(single-ended measurement)
Input Common Mode
Voltage - DIF_IN
V_COM
Common Mode Input Voltage
Input Amplitude - DIF_IN
Input Slew Rate - DIF_IN
V_SWING
dv/dt
Peak to Peak value
Measured differentially
Input Leakage Current
I_IN
V_IN = V_{DD ,} V_IN = GND
Input Duty Cycle
d_tin
Measurement from differential wavefrom
Input Jitter - Cycle to Cycle J_DIFIn
Differential Measurement
1 _{Guaranteed by design and characterization, not 100% tested in production.}
2_{Slew rate measured through +/-75mV window centered around differential zero}
MIN
TYP
600
800
V_SS - 300
0
300
300
0.4
-5
45
0
MAX
1150
UNITS NOTES
mV
1
300
mV
1
1000
mV
1
1450
mV
1
8
V/ns 1,2
5
uA
1
55
%
1
125
ps
1
Electrical Characteristics - DIF 0.7V Current Mode Differential Outputs
T_A = T_COM or T_IND; Supply Voltage VDD = 3.3 V +/-5%
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS NOTES
Slew rate
Trf
Slew rate matching
∆Trf
Scope averaging on
Slew rate matching, Scope averaging on
0.6 2.5
4 V/ns 1, 2, 3
9.5
20
% 1, 2, 4
Voltage High
Voltage Low
VHigh
Statistical measurement on single-ended signal _{660 740 850}
1
using oscilloscope math function. (Scope averaging
mV
VLow
on)
-150 8
150
1
Max Voltage
Min Voltage
Vmax
Vmin
Measurement on single ended signal using absolute
value. (Scope averaging off)
-300
760
-3
1150
mV
1
1
Vswing
Vswing
Scope averaging off
300 1506
mV 1, 2
Crossing Voltage (abs) Vcross_abs
Scope averaging off
250 378 550 mV 1, 5
Crossing Voltage (var)
∆-Vcross
Scope averaging off
54 140 mV 1, 6
1_{Guaranteed by design and characterization, not 100% tested in production. IREF = VDD/(3xRR). For RR = 475Ω (1%), IREF = 2.32mA. IOH =}
6 x I_REF and V_OH = 0.7V @ Z_O=50Ω (100Ω differential impedance).
2 _{Measured from differential waveform}
3 _{Slew rate is measured through the Vswing voltage range centered around differential 0V. This results in a +/-150mV window around}
differential 0V.
4 _{Matching applies to rising edge rate for Clock and falling edge rate for Clock#. It is measured using a +/-75mV window centered on the}
average cross point where Clock rising meets Clock# falling. The median cross point is used to calculate the voltage thresholds the
oscilloscope is to use for the edge rate calculations.
5 _{Vcross is defined as voltage where Clock = Clock# measured on a component test board and only applies to the differential rising edge (i.e.}
Clock rising and Clock# falling).
6 _{The total variation of all Vcross measurements in any particular system. Note that this is a subset of V_cross_min/max (V_cross absolute)}
allowed. The intent is to limit Vcross induced modulation by setting V_cross_delta to be smaller than V_cross absolute.
Electrical Characteristics - Current Consumption
TA = T_COM or T_IND; Supply Voltage VDD = 3.3 V +/-5%
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS NOTES
Operating Supply Current I_DD3.3OP
All outputs active @100MHz, C_L = Full load;
Powerdown Current
I_DD3.3PD
I_DD3.3PDZ
All diff pairs driven
All differential pairs tri-stated
1_{Guaranteed by design and characterization, not 100% tested in production.}
70
80
mA
1
N/A
mA
1
N/A
mA
1
IDT^® Two Output Differential Buffer for PCIe Gen3
5
1667C—04/20/11