interface

SP3222E

Full part number: SP3222ECA-L

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This datasheet covers the SP3222E and SP3232E series of true RS-232 transceivers designed for portable devices like notebooks. The document details their scope, which includes a high-efficiency charge-pump power supply operating from 3.0V to 5.5V without external components. Key performance parameters include a maximum data rate of 120kbps, ultra-low shutdown current of 1µA, and enhanced ESD tolerance up to ±15kV. These 2-driver/2-receiver devices support interoperable voltage levels down to 2.7V and are available in multiple package types including SSOP, SOIC, and TSSOP.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current — 300 µA 1 mA no load, VCC = 3.3V, TAMB = 25°C, TxIN = GND or VCC
output voltage 5 V 5.4 V — All driver outputs loaded with 3kΩ to GND, TAMB = 25°C
output current — 35 mA 60 mA VOUT = 0V
supply voltage range 3 V — 5.5 V
operating temperature 0 °C — 70 °C
propagation delay — 1 µs — RL = 3kΩ, CL = 1000pF
slew rate — — 30 MV/s VCC = 3.3V, RL = 3kΩ, CL = 1000pF, TAMB = 25°C, measurements taken from -3.0V to 3.0V or 3.0V to -3.0V
data rate 120 kbps 235 kbps — RL = 3kΩ, CL = 1000pF, one driver switching
channel count — 2 —
driver count — 2 —
receiver count — 2 —
03 — Alternatives

Closest matches to SP3222E

MAX3232 5.0× lower slew rate, 3.3× lower propagation delay, 1.6× lower operating temperature
PCA9509 9.2× lower propagation delay, 1.8× lower output current, 1.7× higher data rate
SN65HVD3082E 1.6× lower operating temperature, 1.4× lower propagation delay, 1.4× higher quiescent current
MAX485ESA 10.6× higher data rate, 4.1× higher output current, 1.7× higher quiescent current
SP481E 2.7× lower output voltage, 1.5× higher output current, 1.2× higher supply voltage range
CH340C 8.5× higher data rate, 1.6× lower operating temperature, 1.3× lower supply voltage range
04 — FAQ

Frequently asked questions

What is the channel count for the SP3222ECA-L?

The channel count is 2.

What is the data rate when RL = 3kΩ, CL = 1000pF, and one driver is switching?

The data rate is 235 kbps.

What is the driver count for the SP3222ECA-L?

The driver count is 2.

What is the maximum operating temperature for the SP3222ECA-L?

The maximum operating temperature is 70 °C.

What is the output current when VOUT = 0V?

The output current is 35 mA.

What is the output voltage when all driver outputs are loaded with 3kΩ to GND at TAMB = 25°C?

The output voltage is 5.4 V.

What is the propagation delay of the SP3222ECA-L when RL = 3kΩ and CL = 1000pF?

The propagation delay is 1 µs.

What is the quiescent current of the SP3222ECA-L?

The quiescent current is 300 µA under the conditions of no load, VCC = 3.3V, TAMB = 25°C, and TxIN = GND or VCC.

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