max9963bjccq-td Maxim Integrated Products, Inc., max9963bjccq-td Datasheet - Page 21

• Manufacturer Part Number: max9963bjccq-td
• Description: Quad Low-power 500mbps Ate Driver/comparator
• Manufacturer: Maxim Integrated Products, Inc.

Table 4. Shift Register Functions
Figure 5. Serial Interface Timing
BIT
D7
D6
D5
D4
D3
D2
D1
D0
SCLK
DIN
CS
LLEAK
TMSEL
NAME
SC1
SC0
1E
2E
3E
4E
t
CH
Channel 1 Write Enable. Set to 1 to
update the control byte for channel 1. Set
to zero to make no changes to channel 1.
Channel 2 Write Enable. Set to 1 to
update the control byte for channel 2. Set
to zero to make no changes to channel 2.
Channel 3 Write Enable. Set to 1 to
update the control byte for channel 3. Set
to zero to make no changes to channel 3.
Channel 4 Write Enable. Set to 1 to
update the control byte for channel 4. Set
to zero to make no changes to channel 4.
Low-Leakage Select. Set to 1 to put driver
and clamps into a low-leakage mode.
Comparators remain active in low-
leakage mode. Set to zero for normal
operation.
Driver Slew-Rate Select. SC1 and SC0 set
the driver slew rate. See Table 1.
Driver Termination Select. Set to 1 to
force the driver output to the DTV_
voltage (term mode) when RCV_ = 1. Set
to zero to place the driver into a high-
impedance state (high-Z mode) when
RCV_ = 1. See Table 2.
______________________________________________________________________________________
t
CSS0
D7
DESCRIPTION
t
DS
D6
t
DH
D5
Quad, Low-Power, 500Mbps
t
CL
D4
An open-emitter configuration is also available (Figure
4). Connect an external collector voltage to V
and add external pulldown resistors. These resistors
are typically 50Ω to V
of the output trace. Alternate configurations can be
used, provided that the Absolute Maximum Ratings are
not exceeded.
Asserting LLEAK through the serial port or with RST
places the MAX9963/MAX9964 into a very-low-leakage
state in which the DUT_ input current is less than 10nA
over the 0 to 3V range. In this mode, the comparators
still function at full speed but the driver and clamps are
disabled. This mode is convenient for making IDDQ
and PMU measurements without the need for an output
disconnect relay. LLEAK is programmed independently
for each channel.
If DUT_ is driven with a high-speed signal while LLEAK
is asserted, leakage current momentarily increases
beyond the limits specified for normal operation. The
low-leakage recovery specification in the Electrical
Characteristics table indicates device behavior under
this condition.
Each device supplies a single temperature output sig-
nal, TEMP, that asserts a nominal output voltage of
3.43V at a die temperature of +70°C (343K). The output
voltage increases proportionately with temperature at a
rate of 10mV/°C. The temperature sensor output imped-
ance is 15kΩ (typ).
ATE Driver/Comparator
D3
D2
Low-Leakage Mode, LLEAK
CCO_ _
D1
Temperature Monitor
- 2V at the receiving end
D0
t
CSS1
t
CSH1
t
CSWH
CCO_ _
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