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ISL33357E データシート(PDF) 1 Page - Intersil Corporation |
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ISL33357E データシート(HTML) 1 Page - Intersil Corporation |
1 / 23 page 1 DATASHEET 5V, ±15kV ESD Protected, Two Port, Dual Protocol (RS-232/RS-485) Transceivers ISL33354E, ISL33357E The ISL33354E, ISL33357E are two port interface ICs where port 1 is configured as a dual (2 Tx, 2 Rx) RS-232 transceiver, and port 2 is a single RS-485/422 transceiver. An on-board charge pump generates RS-232 compliant ±5V Tx output levels from a single VCC supply as low as 4.5V. The transceivers are RS-232 compliant, with the Rx inputs handling up to ±25V. The port 2 transceiver supports both the RS-485 and RS-422 differential communication standards. The receiver features "full fail-safe" operation, so the Rx output remains in a high state if the inputs are open or shorted together. The transmitter supports two data rates, one of which is slew rate limited for problem free communication at low data rates. The active low Rx enable pin (RE485) allows Tx/Rx direction control, via a single signal, simply by connecting the corresponding DE485 and RE485 pins together. The ISL33354E and ISL33357E also include a shutdown function, which disables the Tx and Rx outputs, disables the charge pumps and places the IC in a low current (55µA) mode. The ISL33357E is a QFN packaged device for space constrained applications. Related Literature • For a full list of related documents, visit our website - ISL33354E, ISL33357E product pages Features • ±15kV (HBM) ESD protected bus pins (RS-232 or RS-485) • Operates from a single 5V supply • Two independent ports: port 1 set for RS-232 (2 transceivers) and port 2 for RS-485/RS-422 (1 transceiver) • True flow-through pinouts (Rx inputs and Tx outputs all on the same side) simplify board layouts • Pb-free (RoHS compliant) • Full fail-safe (open/short) RS-485/422 port 2 Rx • User selectable RS-485 data rates - Fast speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . up to 20Mbps - Slew rate limited . . . . . . . . . . . . . . . . . . . . . . up to 115kbps • Fast RS-232 data rate . . . . . . . . . . . . . . 460kbps (Minimum) • Small charge pump capacitors . . . . . . . . . . . . . . . . 4 x 0.1µF • Low current shutdown mode . . . . . . . . . . . . . . . . . . . . . . 55µA • QFN package saves board space (ISL33357E only) Applications • Gaming applications (e.g., slot machines) • Single board computers •Factory automation •Security networks • Industrial/process control networks • Level translators (e.g., RS-232 to RS-422) •Point-of-sale equipment TABLE 1. SUMMARY OF FEATURES PART NUMBER PACKAGE OPTION PORT 2 RS-485 DATA RATE PORT 1 RS-232 DATA RATE LOW POWER SHUTDOWN? PORT 2 RS-485 Rx AND Tx ISL33354E 28 Ld SSOP 20M, 115k 650k YES YES ISL33357E 40 Ld QFN (6 x 6mm) 20M, 115k 650k YES YES CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC. 2015, 2016. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. October 21, 2016 FN8775.1 |
同様の部品番号 - ISL33357E |
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同様の説明 - ISL33357E |
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