Datasheet

MAX3172/MAX3174
+3.3V Multiprotocol Software-Selectable
Cable Terminators and Transceivers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.3V ± 5%, T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted. See Note 2 for V+
and V- input voltage conditions.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LOGIC OUTPUT (R4OUT)
Output High Voltage V
OH
I
SOURCE
= 1.0mA V
CC
- 1.0 V
Output Low Voltage V
OL
I
SINK
= 1.6mA 0.4 V
Rise or Fall Time t
r
, t
f
10% to 90%, C
L
= 15pF 15 ns
R4OUT = GND 30 50 100
Output Leakage Current
(Receiver Output Three-Stated)
R4OUT = V
CC
0.1 1
µA
TRANSMITTER OUTPUT (T4OUT)
Output Leakage Current I
Z
-0.25V < V
T4OUT
< +0.25V,
power-off or no-cable mode
-100 100 µA
Data Rate V.10/V.28 240 kbps
RECEIVER INPUT (R4INA)
Minimum pulse width passed 5
Receiver Glitch Rejection
(MAX3172 only)
Maximum pulse width rejected 15
µs
V.10 enabled, -10V ≤ V
R4INA
≤ +10V 20 40
Receiver Input Resistance R
IN
V.28 enabled, -15V ≤ V
R4INA
≤ +15V 3 5 7
kΩ
MAX3172 64
Data Rate
MAX3174 240
kbps
V.10 TRANSMITTER
Output Voltage Swing V
ODO
R
L
= 3.9kΩ, Figure 3 ±4.0 ±4.4 ±6.0 V
Loaded Output Voltage Swing V
ODL
R
L
= 450Ω, Figure 3 0.9 × V
ODO
V
Short-Circuit Current I
SC
T4OUT = GND ±100 ±150 mA
Rise or Fall Time t
r
, t
f
10% to 90%, R
L
= 450Ω, C
L
= 100pF,
Figure 3
2µs
Transmitter Propagation Delay t
PHL
, t
PLH
R
L
= 450Ω, C
L
= 100pF, Figure 3 2 µs
Data Skew
| t
PHL
-
t
PLH
|
R
L
= 450Ω, C
L
= 100pF, Figure 3 50 ns
V.10 RECEIVER
Threshold Voltage V
TH
25 100 250 mV
Input Hysteresis ∆V
TH
15 mV
MAX3172 5 10 15 µs
Receiver Propagation Delay t
PHL
, t
PLH
Figure 4
MAX3174 60 120 ns
MAX3172CAI 0.5 4
MAX3172EAI 0.5 5
µs
Data Skew
| t
PHL
-
t
PLH
|
Figure 4
MAX3174 5 16 ns