19-0242; Rev 0; 6/05
Dual, Low-Power, 1200Mbps ATE
Driver/Comparator with 35mA Load
General Description
The MAX9975 dual, low-power, high-speed, pin elec-
tronics driver/comparator with 35mA load IC includes,
for each channel, a three-level pin driver, a dual com-
parator, variable clamps, and an active load. An addi-
tional differential comparator allows comparisons
between the two channels. The driver features a wide
voltage range and high-speed operation, includes high-
impedance and active-termination (3rd-level drive)
modes, and is highly linear even at low voltage swings.
The dual comparator provides low dispersion (timing
variation) over a wide variety of input conditions, and
differential outputs. The clamps provide damping of
high-speed device-under-test (DUT) waveforms when
the device is configured as a high-impedance receiver.
The programmable load supplies up to 35mA of source
and sink current. The load facilitates contact/continuity
testing, at-speed parametric testing of I
OH
and I
OL
, and
pullup of high-output-impedance devices.
The MAX9975 provides high-speed, differential control
inputs and open-collector outputs with internal 50Ω ter-
mination resistors that make it CML compatible. These
features significantly reduce the discrete component
count on the circuit board.
A 3-wire, low-voltage, CMOS-compatible serial inter-
face programs the low-leakage and tri-state/terminate
operational configurations of the MAX9975.
The MAX9975ARCCQ operating range is -1.5V to +6.5V.
The MAX9975AZCCQ operating range is -1.0V to +7.0V.
The MAX9975 features power dissipation of only 1.6W
per channel. The device is available in a 100-pin, 14mm
x 14mm x 0.1mm body, and 0.5mm pitch TQFP. An
exposed 8mm x 8mm die pad on the top of the package
facilitates efficient heat removal. The device is specified
to operate with an internal die temperature of +60°C to
+100°C, and features a die temperature monitor output.
Features
♦
Low 1.6W/Channel (typ) Power Dissipation
♦
Greatly Reduced Power Penalty when Load
Commutated
♦
High Speed: 1200Mbps at 3V
P-P
and 1800Mbps
at 1V
P-P
♦
Programmable 35mA Active-Load Current
♦
Low Timing Dispersion
♦
Wide -1.5V to +6.5V (MAX9975AR) or -1.0V to +7.0V
(MAX9975AZ) Operating Range
♦
Active Termination (3rd-Level Drive)
♦
Integrated Clamps
♦
Integrated Differential Comparator
♦
Interfaces Easily with Most Logic Families
♦
Internal 50Ω Termination Resistors
♦
Low Gain and Offset Errors
♦
Comparator Hysteresis Control from 0V to 15mV
MAX9975
Ordering Information
PART
MAX9975ARCCQ
MAX9975ARCCQ+
MAX9975AZCCQ*
MAX9975AZCCQ+*
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
100 TQFP-EPR**
100 TQFP-EPR**
100 TQFP-EPR**
100 TQFP-EPR**
*Future
product—contact factory for availability.
**EPR
= Exposed pad reversed (TOP).
+Denotes
lead-free package.
Applications
Medium-Performance Commodity Memory ATE
Pin Configuration and Selector Guide appear at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Dual, Low-Power, 1200Mbps ATE
Driver/Comparator with 35mA Load
MAX9975
ABSOLUTE MAXIMUM RATINGS
MAX9975AR
V
CC
to GND .......................................................-0.3V to +11V
V
EE
to GND .....................................................-5.75V to +0.3V
DUT_ to GND ..................................................-2.75V to +7.5V
DHV_, DLV_, DTV_, CHV_, CLV_, COM_
to GND...............................................................-2.5V to +7.5V
CPHV_ to GND .................................................-1.0V to +8.5V
CPLV_ to GND...................................................-3.5V to +6.0V
DUT_ Short Circuit to -1.5V to +6.5V......................Continuous
MAX9975AZ
V
CC
to GND .....................................................-0.3V to +11.5V
V
EE
to GND......................................................-5.25V to +0.3V
DUT_ to GND...................................................-2.25V to +8.0V
DHV_, DLV_, DTV_, CHV_, CLV_, COM_
to GND...............................................................-2.0V to +8.0V
CPHV_ to GND ..................................................-0.5V to +9.0V
CPLV_ to GND...................................................-3.0V to +6.5V
DUT_ Short Circuit to -1.0V to +7.0V......................Continuous
V
CC
- V
EE
...........................................................-0.3V to +16.75V
GS to GND .............................................................................±1V
LDH_, LDL_ to GND .................................................-0.3V to +6V
DATA_, NDATA_, RCV_, NRCV_ to GND .................-2.5V to +5V
LDEN_, NLDEN_ to GND..........................................-2.5V to +5V
DATA_ to NDATA_, RCV_ to NRCV_, LDEN_ to NLDEN_......±1.5V
TDATA_, TLDEN_ to GND ........................................-2.5V to +5V
DATA_, NDATA_ to TDATA_..................................................±2V
LDEN_, NLDEN_ to TLDEN_..................................................±2V
V
CCO_
to GND ..........................................................-0.3V to +5V
SCLK, DIN,
CS, RST
to GND ......................................-1V to +5V
DHV_ to DLV_ ......................................................................±10V
DHV_ to DTV_ ......................................................................±10V
DLV_ to DTV_.......................................................................±10V
CHV_ or CLV_ to DUT_ ........................................................±10V
CH_, NCH_, CL_, NCL_ to GND..................................-1V to +5V
HYS_ Current ........................................................-1mA to +1mA
All Other Pins to GND ......................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
TEMP Current...................................................-0.5mA to +20mA
Power Dissipation (T
A
= +70°C)
100-Pin TQFP-EPR (derate 167mW/°C
above +70°C) ...............................................................13.3W*
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature .....................................................+150°C
Lead Temperature, Lead-Free (soldering, 10s)...............+260°C
Lead Temperature, Leaded (soldering, 10s)...................+300°C
*Dissipation
wattage values are based on still air with no heat sink. Actual maximum power dissipation is a function of heat-extraction
techniques and may be substantially higher.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(MAX9975AR: V
CC
= +9.75V, V
EE
= -4.75V, V
CPHV_
= +7.2V, V
CPLV_
= -2.2V. MAX9975AZ: V
CC
= +10.25V, V
EE
= -4.25V, V
CPHV_
= +7.7V,
V
CPLV_
= -1.7V. V
CCO_
= +1.8V, V
LDH_
= V
LDL_
= 0V, V
GS
= 0V, R
HYS_
= open, T
J
= +85°C, unless otherwise noted. All temperature coeffi-
cients are measured at T
J
= +60°C to +100°C, unless otherwise noted.) (Note 1)
PARAMETER
POWER SUPPLIES
Positive Supply
Negative Supply
V
CC
V
EE
MAX9975AR
MAX9975AZ
MAX9975AR
MAX9975AZ
V
LDH
_ = V
LDL
_ = 0V, R
L
≥
10MΩ
Positive Supply Current (Note 2)
I
CC
V
LDH
_ = V
LDL
_ = 3.5V, R
L
= 0,
V
COM
_ = 1.5V, load enabled,
driver = high impedance
V
LDH
_ = V
LDL
_ = 0V, R
L
≥
10MΩ
Negative Supply Current (Note 2)
I
EE
V
LDH
_ = V
LDL
_ = 3.5V, R
L
= 0,
V
COM
_ = -1V, load enabled,
driver = high impedance
V
LDH
_ = V
LDL
_ = 0V
Power Dissipation (Notes 2, 3)
P
D
V
LDH
_ = V
LDL
_ = 3.5V, R
L
= 0,
V
COM
_ = 1.5V, load enabled,
driver = high impedance
9.5
10.0
-5.25
-4.75
9.75
10.25
-4.75
-4.25
170
250
-290
-370
3.2
3.7
10.5
11.0
-4.50
-4.00
190
280
-320
-410
3.6
4.1
W
mA
mA
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Dual, Low-Power, 1200Mbps ATE
Driver/Comparator with 35mA Load
ELECTRICAL CHARACTERISTICS (continued)
(MAX9975AR: V
CC
= +9.75V, V
EE
= -4.75V, V
CPHV_
= +7.2V, V
CPLV_
= -2.2V. MAX9975AZ: V
CC
= +10.25V, V
EE
= -4.25V, V
CPHV_
= +7.7V,
V
CPLV_
= -1.7V. V
CCO_
= +1.8V, V
LDH_
= V
LDL_
= 0V, V
GS
= 0V, R
HYS_
= open, T
J
= +85°C, unless otherwise noted. All temperature coeffi-
cients are measured at T
J
= +60°C to +100°C, unless otherwise noted.) (Note 1)
PARAMETER
DUT_ CHARACTERISTICS
Operating Voltage Range
(Note 4)
Leakage Current in High-
Impedance Mode
V
DUT
MAX9975AR
MAX9975AZ
MAX9975AR
I
DUT
MAX9975AZ
MAX9975AR
MAX9975AZ
Combined Capacitance
Low-Leakage Enable Time
Low-Leakage Disable Time
CONTROL AND LEVELS INPUTS
LEVEL PROGRAMMING INPUTS (DHV_, DLV_, DTV_, CHV_, CLV_, CPHV_, CPLV_, COM_, LDH_, LDL_)
Input Bias Current
Settling Time
Input High Voltage
Input Low Voltage
Differential Input Voltage
Input Bias Current
Input Termination Voltage
Input Termination Resistor
V
TDATA
_
V
TLDEN
_
Between signal and corresponding
termination voltage input
V
THRINT
R
O
V
THR
V
IH
V
IL
I
B
0.43
V
THR
+
0.2
-0.1
0
47.5
V
IH
V
IL
Between differential inputs
V
DIFF
Between a differential input and its
termination voltage
I
BIAS
To 0.1% of full-scale change
0
-0.2
±0.15
1
3.5
+3.2
±1.00
±1.9
±25
+3.5
52.5
V
µA
V
Ω
±25
µA
µs
V
V
C
DUT
LLEAK = 0, V
DUT
_ = -1.5V,
0V, +3V, +6.5V
LLEAK = 0, V
DUT
_ = -1V,
0V, +3V, +7V
LLEAK = 1, V
DUT
_ = -1.5V,
0V, +3V, +6.5V
LLEAK = 1, V
DUT
_ = -1V,
0V, +3V, +7V
3
5
20
0.1
-1.5
-1.0
+6.5
+7.0
±3
µA
±3
±15
nA
±15
5
6
pF
µs
µs
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX9975
Leakage Current in Low-Leakage
Mode
Driver in term mode (DUT_ = DTV_)
Driver in high-impedance mode
(Notes 5, 6)
(Notes 6, 7)
DIFFERENTIAL CONTROL INPUTS (DATA_, NDATA_, RCV_, NRCV_, LDEN_, NLDEN_)
SINGLE-ENDED CONTROL INPUTS (
CS,
SCLK, DIN,
RST
)
Internal Threshold Reference
Internal Reference Output
Resistance
External Threshold Reference
Input High Voltage
Input Low Voltage
Input Bias Current
1.05
1.25
20
1.73
3.5
V
THR
-
0.2
±25
1.45
V
kΩ
V
V
V
µA
_______________________________________________________________________________________
3
Dual, Low-Power, 1200Mbps ATE
Driver/Comparator with 35mA Load
MAX9975
ELECTRICAL CHARACTERISTICS (continued)
(MAX9975AR: V
CC
= +9.75V, V
EE
= -4.75V, V
CPHV_
= +7.2V, V
CPLV_
= -2.2V. MAX9975AZ: V
CC
= +10.25V, V
EE
= -4.25V, V
CPHV_
= +7.7V,
V
CPLV_
= -1.7V. V
CCO_
= +1.8V, V
LDH_
= V
LDL_
= 0V, V
GS
= 0V, R
HYS_
= open, T
J
= +85°C, unless otherwise noted. All temperature coeffi-
cients are measured at T
J
= +60°C to +100°C, unless otherwise noted.) (Note 1)
PARAMETER
SCLK Frequency
SCLK Pulse-Width High
SCLK Pulse-Width Low
CS
Low to SCLK High Setup
CS
High to SCLK High Setup
SCLK High to
CS
High Hold
DIN to SCLK High Setup
DIN to SCLK High Hold
CS
Pulse-Width High
TEMPERATURE MONITOR (TEMP)
Nominal Voltage
Temperature Coefficient
Output Resistance
DRIVERS (Note 8)
DC OUTPUT CHARACTERISTICS (R
L
≥
10MΩ)
DHV_, DLV_, DTV_, Output Offset
Voltage
V
OS
At DUT_ with V
DHV
_, V
DTV
_, V
DLV
_
independently tested at +1.5V
V
GS
= +100mV,
V
DHV
_ = 6.5V + 100mV
V
GS
= -100mV,
V
DLV
_ = -1.5V - 100mV
V
GS
= +100mV,
V
DHV
_ = 7V + 100mV
V
GS
= -100mV,
V
DLV
_ = -1V - 100mV
DHV_, DLV_, DTV_ Output-Offset
Temperature Coefficient
DHV_, DLV_, DTV_ Gain
DHV_, DLV_, DTV_ Gain
Temperature Coefficient
Linearity Error
V
DUT
_ = 1.5V, 3V (Note 9)
Full range (Notes 9, 10)
MAX9975AR
DHV_ to DLV_ Crosstalk
MAX9975AZ
V
DLV
_ = 0V,
V
DHV
_ = 200mV, 6.5V
V
DLV
_ = 0V,
V
DHV
_ = 200mV, 7V
A
V
Measured with V
DHV
_, V
DLV
_, and V
DTV
_ at
0V and 4.5V
0.997
±2
±2
mV
±2
±2
+200
1.00
-50
±5
±15
±2
mV
±2
1.003
µV/°C
V/V
ppm/°C
mV
±15
mV
T
J
= +70°C, R
L
≥
10MΩ
3.33
+10
20
V
mV/°C
kΩ
SYMBOL
f
SCLK
t
CH
t
CL
t
CSS0
t
CSS1
t
CSH1
t
DS
t
DH
t
CSWH
8
8
3.5
3.5
3.5
3.5
3.5
20
CONDITIONS
MIN
TYP
MAX
50
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
ns
SERIAL INTERFACE TIMING (Figure 6)
MAX9975AR
Output Offset Voltage Due to
Ground Sense
V
GSOS
MAX9975AZ
4
_______________________________________________________________________________________
Dual, Low-Power, 1200Mbps ATE
Driver/Comparator with 35mA Load
ELECTRICAL CHARACTERISTICS (continued)
(MAX9975AR: V
CC
= +9.75V, V
EE
= -4.75V, V
CPHV_
= +7.2V, V
CPLV_
= -2.2V. MAX9975AZ: V
CC
= +10.25V, V
EE
= -4.25V, V
CPHV_
= +7.7V,
V
CPLV_
= -1.7V. V
CCO_
= +1.8V, V
LDH_
= V
LDL_
= 0V, V
GS
= 0V, R
HYS_
= open, T
J
= +85°C, unless otherwise noted. All temperature coeffi-
cients are measured at T
J
= +60°C to +100°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
MAX9975AR
DLV_ to DHV_ Crosstalk
MAX9975AZ
MAX9975AR
DTV_ to DLV_ and DHV_
Crosstalk
MAX9975AZ
DHV_ to DTV_ Crosstalk
DLV_ to DTV_ Crosstalk
DHV_, DTV_, DLV_ DC Power-
Supply Rejection Ratio
Maximum DC Drive Current
DC Output Resistance
DC Output Resistance Variation
PSRR
I
DUT
_
R
DUT
_
ΔR
DUT
_
I
DUT
_ = ±30mA (Note 12)
I
DUT
_ = ±1mA, ±8mA
I
DUT
_ = ±1mA, ±8mA, ±15mA, ±40mA
±80
V
DLV
_ = 0V, V
DHV
_ = 0.1V
Drive-Mode Overshoot
V
DLV
_ = 0V, V
DHV
_ = 1V
V
DLV
_ = 0V, V
DHV
_ = 3V
V
DLV
_ = 0V, V
DHV
_ = 0.1V
Drive-Mode Undershoot
V
DLV
_ = 0V, V
DHV
_ = 1V
V
DLV
_ = 0V, V
DHV
_ = 3V
V
DUT_
= 1.0V
P-P
, t
R
= t
F
= 250ps,
10% to 90%
Term-Mode Overshoot (Note 13)
V
DUT_
= 3.0V
P-P
, t
R
= t
F
= 500ps,
10% to 90%
Term-Mode Spike
High-Impedance-Mode Spike
Settling Time to within 25mV
Settling Time to within 5mV
V
DHV
_ = V
DTV
_ = 1V, V
DLV
_ = 0V
V
DLV
_ = V
DTV
_ = 0V, V
DHV
_ = 1V
V
DLV
_ = -1.0V, V
DHV
_ = 0V
V
DLV
_ = 0V, V
DHV
_ = 1V
3V step (Note 14)
3V step (Note 14)
0
180
180
100
100
4
40
250
250
mV
mV
ns
ns
15
110
210
4
20
30
60
22
130
370
11
65
185
150
mV
mV
mV
CONDITIONS
V
DHV
_ = 5V,
V
DLV
_ = -1.5V, +4.8V
V
DHV
_ = 5V,
V
DLV
_ = -1V, +4.8V
V
DHV
_ = 3V, V
DLV
_ = 0V,
V
DTV
_ = -1.5V, +6.5V
V
DHV
_ = 3V, V
DLV
_ = 0V,
V
DTV
_ = -1V, +7V
MIN
TYP
MAX
±2
mV
±2
±2
mV
±2
±2
±2
±18
±40
47
48
0.5
0.75
±80
49
1
1.5
mV
mV
mV/V
mA
Ω
Ω
UNITS
MAX9975
V
DTV
_ = 1.5V, V
DLV
_ = 0V,
V
DHV
_ = 1.6V, 3V
V
DTV
_ = 1.5V, V
DHV
_ = 3V,
V
DLV
_ = 0V, 1.4V
(Note 11)
DYNAMIC OUTPUT CHARACTERISTICS (Z
L
= 50Ω)
AC Drive Current
mA
_______________________________________________________________________________________
5
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