MAX14808 Datasheet, PDF (25/31 Pages) Maxim Integrated Products – Octal Three-Level/Quad Five-Level High-Voltage 2A Digital Pulsers with T/R Switch

MAX14808 / MAX14809
Octal Three-Level/Quad Five-Level High-Voltage
2A Digital Pulsers with T/R Switch
Table 3. Quad Five-Level Dual Mode (MODE0 = Low, MODE1 = High) (Note 7)
INPUTS
OUTPUTS
DINNx
DINPx
DINNy
DINPy
x = 1, 2, 3, 4 x = 1, 2, 3, 4 y = 5, 6, 7, 8 y = 5, 6, 7, 8
OUTx = OUTy
LVOUTy
y = 1, 2, 3, 4
(MAX14808 ONLY)
LVOUTy
y = 5, 6, 7, 8
(MAX14808 ONLY)
0
0
X
0
High impedance
(damp off)
T/R switch off
(LVOUT_ = GND)
T/R switch off
(LVOUT_ = GND)
0
0
X
1
Clamp on
(damp off)
T/R switch off
(LVOUT_ = GND)
T/R switch off
(LVOUT_ = GND)
0
1
0
X
V_PPB
(damp off)
T/R switch off
(LVOUT_ = GND)
T/R switch off
(LVOUT_ = GND)
1
0
0
X
V_NNB
(damp off)
T/R switch off
(LVOUT_ = GND)
T/R switch off
(LVOUT_ = GND)
0
1
1
X
V_PPA
(damp off)
T/R switch off
(LVOUT_ = GND)
T/R switch off
(LVOUT_ = GND)
1
0
1
X
V_NNA
(damp off)
T/R switch off
(LVOUT_ = GND)
T/R switch off
(LVOUT_ = GND)
1
1
1
X
Clamp on
(damp on)
T/R switch on
T/R switch off
X = Don’t care, 0 = logic-low, 1 = logic-high.
Note 7: Only three control inputs (DINNx, DINPx, DINNy) are required for five-level, dual-mode operation. DINPy can be connected
to GND or VDD.
Table 4. Transmit Disable Mode
(MODE0 = High, MODE1 = High)
INPUTS
DINN_ DINP_
OUTPUTS
OUT_
LVOUT_
(MAX14808
ONLY)
0
0
High impedance
T/R switch off
(damp off)
(LVOUT_ = GND)
1
0
High impedance
T/R switch off
(damp off)
(LVOUT_ = GND)
0
1
High impedance
T/R switch off
(damp off)
(LVOUT_ = GND)
1
1
High impedance
(damp on)
T/R switch on
0 = Logic-low, 1 = logic-high.
Shutdown Mode
All channels are disabled, no transmission and reception
is possible. This mode has the lowest power consumption.
Octal Three-Level Mode
The devices operate in eight independent channels.
Each channel can generate a three-level pulse. The
high-side and low-side FET of each channel are capable
of providing 2.0A current, while the clamp is capable of
1A current.
Quad Dual Mode
The devices operate in four independent channels. Each
channel can generate a five-level pulse. The devices
feature independent dual voltage supplies (V_NNA, V_NNB,
V_PPA, and V_PPB) and can generate pulses between GND,
V_PPA, and V_NNA or between GND, V_PPB, and V_NNB. The
high-side and low-side FET as well as the clamp of each
channel are capable of providing 2.0A current.
Maxim Integrated
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