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MAX3948 Datasheet(PDF) 5 Page - Maxim Integrated Products

Part # MAX3948
Description  11.3Gbps, Low-Power, DC-Coupled Laser Driver
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX3948 Datasheet(HTML) 5 Page - Maxim Integrated Products

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MAX3948
11.3Gbps, Low-Power, DC-Coupled Laser Driver
ELECTRICALCHARACTERISTICS(continued)
(VCC = VCCT = 2.95V to 3.63V, TA = -40NC to +95NC; typical values are at VCC = VCCT = 3.3V, TA = +25NC, LDDC = 20mA, LDMOD
= 40mA, and 14I single-ended electrical output load, unless otherwise noted. See Figure 1 for electrical setup.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TIMINGREQUIREMENTS(Notes5,6,8)
Initialization Time
tINIT
LDDC = 25mA, LDMOD = 65mA, DC and
modulation DAC are both H0x00, time from
TX_EN = high to LDDC and LDMOD at 90%
of steady state
250
ns
DISABLE Assert Time
tOFF
Time from rising edge of DISABLE input
signal to LDDC and LDMOD at 10% of
steady state (Note 6)
25
75
ns
DISABLE Negate Time
tON
Time from falling edge of DISABLE to LDDC
and LDMOD at 90% of steady state (Note 6)
250
600
ns
FAULT Reset Time
tRECOVER
Time from negation of latched fault using
DISABLE to LDDC and LDMOD at 90% of
steady state
250
600
ns
FAULT Assert Time
tFAULT
Time from fault to FAULT = high, CFAULT
20pF, RFAULT = 4.7kW
0.7
3
F
s
DISABLE to Reset Time
Time DISABLE must be held high to reset
fault
4
F
s
DIGITALI/OSPECIFICATIONS(SDA,SCL,CSEL,FAULT,DISABLE)
Input High Voltage
VIH
1.8
VCC
V
Input Low Voltage
VIL
0
0.8
V
Input Hysteresis
VHYST
80
mV
Input Capacitance
CIN
5
pF
DISABLE Input Resistance
RPULL
Internal pullup resistor
4.7
7.5
10
kI
Input Leakage Current
(DISABLE)
IIH
Input connected to VCC
10
F
A
IIL
Input connected to GND
440
775
Input Leakage Current (SDA)
IIH
Input connected to VCC
-2
+2
F
A
IIL
Input connected to GND; internal pullup is
75k
W typical
35
75
Input Leakage Current (SCL,
CSEL)
IIH
Input connected to VCC; internal pulldown
is 75k
W typical
35
75
F
A
IIL
Input connected to GND
-2
+2
Output High Voltage (SDA,
FAULT)
VOH
External pullup is (4.7kI to 10kI) to VCC
VCC - 0.1
V
Output Low Voltage (SDA,
FAULT)
VOL
External pullup is (4.7kI to 10kI) to VCC
0.4
V


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