MAX9977AKCCQ+D Maxim Integrated, MAX9977AKCCQ+D Datasheet - Page 13

• Manufacturer Part Number: MAX9977AKCCQ+D
• Description: Buffers & Line Drivers
• Manufacturer: Maxim Integrated

Specifications of MAX9977AKCCQ+D

• Rohs: yes

The MAX9977 low-power, high-speed, pin-electronics
IC includes four three-level pin drivers. The drivers fea-
ture a -1.5V to +6.5V operating range and high-speed
operation, include high-impedance and active-termina-
tion (3rd-level drive) modes, and are highly linear even
at low voltage swings.
Optional internal resistors at the high-speed inputs pro-
vide compatibility with CML interfaces and reduce the
discrete component count on the circuit board. Connect
the termination voltage inputs, V
age appropriate for the drive circuits to terminate the
multiplexer control inputs (see the Functional Diagram).
A 3-wire, low-voltage CMOS-compatible serial interface
programs the low-leakage and tri-state/terminate opera-
tional configurations of the MAX9977.
To upgrade from the MAX9963 or MAX9965 to the
MAX9977 take these steps:
1) GS on the MAX9977 is in the position of CHV2 on the
MAX9963/MAX9965. Program CHV2 to zero volts.
Compatibility with the MAX9963
PIN
39
40
41
42
46
47
48
53
59
63
67
73
78
79
80
84
85
86
87
NAME
DHV2
DHV1
DUT1
DUT2
TEMP
DUT3
DUT4
DHV4
DHV3
DLV2
DTV2
DLV1
DTV1
DTV4
DLV4
DTV3
DLV3
THR
GS
______________________________________________________________________________________
Detailed Description
Channel 2 Driver High Voltage Input
Channel 2 Driver Low Voltage Input
Channel 2 Driver Termination Voltage Input
Ground-Sense Voltage Input for All Channels
Channel 1 Driver High Voltage Input
Channel 1 Driver Low Voltage Input
Channel 1 Driver Termination Voltage Input
Channel 1 Device-Under-Test Input/Output
Channel 2 Device-Under-Test Input/Output
Temperature Monitor Output, One per Device
Channel 3 Device-Under-Test Input/Output
Channel 4 Device-Under-Test Input/Output
Channel 4 Driver Termination Voltage Input
Channel 4 Driver Low Voltage Input
Channel 4 Driver High Voltage Input
Single-Ended Logic Threshold Reference for All Channels
Channel 3 Driver Termination Voltage Input
Channel 3 Driver Low Voltage Input
Channel 3 Driver High Voltage Input
T
12 and V
and MAX9965
T
34, to a volt-
Quad, Low-Power, 1200Mbps
2) THR on the MAX9977 is in the position of CHV3 on
3) MAX9977AK DRV_ and RCV_ inputs have center
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). High-speed
input RCV_ and mode-control bits TMSEL and LLEAK
control the switching. In high-impedance mode, the
bias current at DUT_ is less than 3µA over the -1.5V to
+6.5V range, while the node maintains its ability to track
the MAX9963/MAX9965. If CHV3 is being controlled
by a DAC that is referenced to ground sense, reas-
sign this input to a reference that is not affected by
changes in ground sense.
taps V
resistors in the positions of V
the MAX9963/MAX9965, the comparator-output
resistor termination points. Bias these termination
points accordingly.
FUNCTION
T
Pin Description (continued)
12 and V
T
34 for the internal termination
ATE Driver
CCO12
Output Driver
and V
CCO34
13
of