MAX9975ARCCQ+TD Maxim Integrated, MAX9975ARCCQ+TD Datasheet - Page 26

• Manufacturer Part Number: MAX9975ARCCQ+TD
• Description: Buffers & Line Drivers
• Manufacturer: Maxim Integrated

Specifications of MAX9975ARCCQ+TD

• Rohs: yes

The MAX9975 dual, low-power, high-speed, pin-electron-
ics DCL IC includes, for each channel, a three-level
pin driver, a dual comparator, variable clamps, and an
active load. An additional differential comparator allows
comparisons between the two channels. The driver fea-
tures a -1.5V to +6.5V (MAX9975AR) or a -1.0V to +7.0V
(MAX9975AZ) operating range and high-speed opera-
tion, includes high-impedance and active-termination
(3rd-level drive) modes, and is highly linear even at low
voltage swings. The dual comparator provides low dis-
persion (timing variation) over a wide variety of input con-
ditions, and differential outputs. The clamps provide
damping of high-speed DUT waveforms when the device
is configured as a high-impedance receiver. The pro-
grammable load supplies up to 35mA of source and sink
current. The load facilitates contact/continuity testing, at-
speed parametric test of I
output-impedance devices.
Internal resistors at the high-speed inputs provide com-
patibility with CML interfaces. In addition, flexible open-
collector outputs with optional internal pullup resistors
are available for the comparators. These features sig-
nificantly reduce the discrete component count on the
circuit board.
A 3-wire, low-voltage CMOS-compatible serial interface
programs the low-leakage, load-disable, slew-rate, dif-
Dual, Low-Power, 1200Mbps ATE
Driver/Comparator with 35mA Load
Figure 2. Simplified Driver Channel
26
______________________________________________________________________________________
HIGH-SPEED
INPUTS
DATA_
RCV_
Detailed Description
REFERENCE
OH
INPUTS
CPHV_
CPLV_
MODE
DHV_
DTV_
DLV_
and I
OL
, and pullup of high-
2
0
1
0
1
BUFFER
CLAMPS
ferential/window comparator and tri-state/terminate
operational configurations of the MAX9975.
The MAX9975 is pin compatible and functionally similar
to the MAX9969. The MAX9975 differs from the
MAX9969 in the following ways.
•
•
•
•
•
The driver input is a high-speed multiplexer that selects
one of three voltage inputs: DHV_, DLV_, or DTV_. This
switching is controlled by high-speed inputs DATA_
and RCV_ and mode-control bit TMSEL (Table 1).
DUT_ can be toggled at high speed between the buffer
output and high-impedance mode, or it can be placed
into low-leakage mode (Figure 2, Table 1). In high-
impedance mode, the clamps are connected. High-
speed input RCV_ and mode-control bits TMSEL and
The MAX9975 has lower DHV_, DLV_, and DTV_
gain errors.
The MAX9975 has no programmable slew-rate control;
the slew rate control bits are ignored.
The MAX9975 features programmable hysteresis.
The MAX9975 features double the comparator out-
put current.
The MAX9975AZ features a -1V to +7V operating
range.
0
1
MAX9975 and MAX9969 Compatibility
MAX9975
0
COMPARATORS
ACTIVE LOAD
50Ω
AND
DUT_
Output Driver