interface

SP490E

Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the SP490E family does

The SP490E and SP491E are low power differential line drivers and receivers for RS-485 and RS-422 standards up to 10 Mbps. These BiCMOS devices operate on a single +5V supply and feature 200mV receiver input sensitivity. The SP490E lacks enable lines, while the SP491E adds driver and receiver tri-state enable functionality. Both parts support 15kV human body model ESD protection. They are available in 8-pin or 14-pin plastic DIP and NSOIC packages for commercial and industrial temperature ranges. Typical applications include industrial serial communication interfaces requiring robust noise immunity and full-duplex data transmission.

Next step
Start building with SP490E → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
Ordering code:
01 — Key specifications

SP490E datasheet parameters

ParameterMinTypMaxConditionsSource
quiescent current — 900 µA — \overline{\text{REB}}, D = 0V or VCC; DE = VCC Sipex datasheet, p. 6 — SPECIFICATIONS
supply voltage range 4.75 V — 5.25 V Sipex datasheet, p. 3 — SPECIFICATIONS
operating temperature -40 °C — 85 °C Sipex datasheet, p. 3 — SPECIFICATIONS
propagation delay — 13 ns — RDIFF = 54Ω; CL1 = CL2 = 100pF; Figures 3 & 7 Sipex datasheet, p. 6 — SPECIFICATIONS
data rate 10 Mbps — — RDIFF = 54Ω, CL1 = CL2 = 100pF Sipex datasheet, p. 2 — SPECIFICATIONS
fall time 3 ns 15 ns 40 ns tSKEW = |tDPLH- tDPHL|From 10% to 90%; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5 Sipex datasheet, p. 2 — SPECIFICATIONS
channel count — 1 — Sipex datasheet, p. 1
driver count — 1 — Sipex datasheet, p. 1
receiver count — 1 — Sipex datasheet, p. 1
01 — Key specifications

SP491E datasheet parameters

ParameterMinTypMaxConditionsSource
quiescent current — 900 µA — \overline{\text{REB}}, D = 0V or VCC; DE = VCC Sipex datasheet, p. 6 — SPECIFICATIONS
supply voltage range 4.75 V — 5.25 V Sipex datasheet, p. 3 — SPECIFICATIONS
operating temperature -40 °C — 85 °C Sipex datasheet, p. 3 — SPECIFICATIONS
propagation delay — 13 ns — RDIFF = 54Ω; CL1 = CL2 = 100pF; Figures 3 & 7 Sipex datasheet, p. 6 — SPECIFICATIONS
data rate 10 Mbps — — RDIFF = 54Ω, CL1 = CL2 = 100pF Sipex datasheet, p. 2 — SPECIFICATIONS
fall time 3 ns 15 ns 40 ns tSKEW = |tDPLH- tDPHL|From 10% to 90%; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5 Sipex datasheet, p. 2 — SPECIFICATIONS
channel count — 1 — Sipex datasheet, p. 1
driver count — 1 — Sipex datasheet, p. 1
receiver count — 1 — Sipex datasheet, p. 1
03 — Alternatives

Closest matches to SP490E

GM3485E 1.8× lower quiescent current, 1.5× higher propagation delay, 1.2× lower supply voltage range
SP3485E 1.7× lower quiescent current, 1.6× lower propagation delay, 1.6× higher operating temperature
SP481E 2.3× higher propagation delay, 1.6× higher operating temperature, similar data rate
GM3232E 20.0× lower data rate, 3.0× lower quiescent current, 1.5× lower supply voltage range
MAX485ESA 4.0× lower data rate, 2.3× higher propagation delay, 1.8× lower quiescent current
PCA9509 8.4× higher propagation delay, 2.0× lower quiescent current, 1.2× lower supply voltage range
SP3485 5.4× higher propagation delay, 3.0× lower fall time, 1.6× higher operating temperature
MAX3485ESA 1.7× lower quiescent current, 1.6× lower propagation delay, 1.4× higher operating temperature
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