SP3238EEY-L/TR
MaxLinear, Inc.United States

SP3238EEY-L/TR

ActiveDrivers, Receivers, Transceivers28 Pin TSSOP

IC TRANSCEIVER FULL 5/3 28TSSOP

SP3238EEY-L/TR is a 5-driver/3-receiver RS-232 transceiver operating from 3.0V to 5.5V in a 28-pin TSSOP package, featuring AUTO ON-LINE wake-up and EIA/TIA-232 compliance.Checked against the datasheet

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Technical parameters

Key specs

ProtocolRS-232
Drivers/Receivers5
Data rate250 kbpsMin · Min 250 kbps (RL = 3KΩ，CL = 1000pF
Supply voltage3 ~ 5.5 V

Datasheet-verified parameters

28 items
ParameterValue and test conditionsSource
ProtocolEIA/TIA-232-F, EIA/TIA-232, EIA/TIA-562, ITU-T V.28/V.24
Drivers / Receivers5 Drivers / 3 Receivers
Data RateMin 250 kbps (RL = 3KΩ, CL = 1000pF, one driver switching)
Supply Voltage+3.0V to +5.5V
Package28 Pin TSSOP
Operating Temperature-40°C to +85°C
GradeIndustrial (implied by -40°C to +85°C range)
RoHSLead Free: Yes
Recommended Operating ConditionsVcc = +3.0V to +5.5V, Tamb = TMIN to TMAX
Absolute Maximum RatingsVcc: -0.3V to +6.0V; V+: -0.3V to +7.0V; V-: +0.3V to -7.0V; V+ + |V-|: +13V; ICC: ±100mA
Supply Current, AUTO ON-LINETyp 1.0 μA, Max 10 μA (All RxIN open, ONLINE = GND, SHUTDOWN = Vcc, TxIN = GND or Vcc)
Supply Current, ShutdownTyp 1.0 μA, Max 10 μA (SHUTDOWN = GND, TxIN = Vcc or GND)
Supply Current, AUTO ON-LINE DisabledTyp 0.3 mA, Max 1.0 mA (ONLINE = SHUTDOWN = Vcc, no load, TxIN = GND or Vcc)
Driver Output Voltage SwingMin ±5.0 V, Typ ±5.4 V (All driver outputs loaded with 3KΩ to GND)
Driver Output ResistanceMin 300 Ω (Vcc = V+ = V- = 0V, VOUT = ±2V)
Driver Output Short-Circuit CurrentTyp ±35 mA, Max ±60 mA (VOUT = 0V)
Receiver Input Voltage Range-25 V to +25 V
Receiver Input Threshold LOWMin 0.6 V, Typ 1.2 V (Vcc = 3.3V); Min 0.8 V, Typ 1.5 V (Vcc = 5.0V)
Receiver Input Threshold HIGHTyp 1.5 V, Max 2.4 V (Vcc = 3.3V); Typ 1.8 V, Max 2.4 V (Vcc = 5.0V)
Receiver Input HysteresisTyp 0.5 V
Receiver Input ResistanceMin 3 kΩ, Typ 5 kΩ, Max 7 kΩ
Receiver Propagation DelayTyp 0.15 μs (Receiver input to Receiver output, CL = 150pF)
Transition-Region Slew RateMax 30 V/μs (Vcc = 3.3V, RL = 3kΩ, TAMB = 25°C)
ESD Tolerance (HBM)+15kV Human Body Model
ESD Tolerance (IEC61000-4-2 Air)+15kV IEC61000-4-2 Air Discharge
ESD Tolerance (IEC61000-4-2 Contact)+8kV IEC61000-4-2 Contact Discharge
External Components4 Capacitors
Auto On-Line CircuitryYes
All parameters (16)ExpandCollapse
Power
Voltage - Supply3V ~ 5.5V
Environment and package
Mounting TypeSurface Mount
Operating Temperature-40°C ~ 85°C
PackageTape & Reel (TR)
Package / Case28-TSSOP (0.173", 4.40mm Width)
Supplier Device Package28-TSSOP
Other
Base Product NumberSP3238
Data Rate250kbps
DuplexFull
MfrMaxLinear, Inc.
Number of Drivers/Receivers5/3
Product StatusActive
ProtocolRS232
Receiver Hysteresis500 mV
Series-
TypeTransceiver

Pinout and package

Figure 4. SP3238E Pinout Confi…
Figure 4. SP3238E Pinout Confi…
Package: 28 Pin TSSOP
PinNameFunctionSource
c1+Positive terminal of the symmetrical charge-pump capacitor C1
c1-Negative terminal of the symmetrical charge-pump capacitor C1
c2+Positive terminal of the symmetrical charge-pump capacitor C2
c2-Negative terminal of the symmetrical charge-pump capacitor C2
gndGround
onlineApply logic HIGH to override AUTO ON-LINE circuitry keeping drivers active (SHUTDOWN must also be logic HIGH)
r1inRS-232receiver input
r1outTTL/CMOSreceiver output
r2inRS-232receiver input
r2outTTL/CMOSreceiver output
r3inRS-232receiver input
r3outTTL/CMOSreceiver output
shutdownApply logic LOW to shut down drivers and charge pump. This overrides all AUTO ON-LINE circuitry and ONLINE
statusTTL/CMOSOutput indicating if a RS-232 signal is present on any receiver input
t1inTTL/CMOSdriver input
t1outRS-232Driver Output
t2inTTL/CMOSdriver input
t2outRS-232Driver Output
t3inTTL/CMOSdriver input
t3outRS-232Driver Output
t4inTTL/CMOSdriver input
t4outRS-232Driver Output
t5inTTL/CMOSdriver input
t5outRS-232Driver Output
v+Regulated +5.5V output generated by the charge pump
v-Regulated -5.5V output generated by the charge pump
vcc+3.0V to +5.5V supply voltage

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DatasheetDatasheet · 643.8 KB · 2026-10-29
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