DATASHEET ISL33354E, ISL33357E FN8775 Rev 1.00 5V, 15kV ESD Protected, Two Port, Dual Protocol (RS-232/RS-485) Transceivers Oct 21, 2016 The ISL33354E, ISL33357E are two port interface ICs where Features port 1 is configured as a dual (2 Tx, 2 Rx) RS-232 transceiver, 15kV (HBM) ESD protected bus pins (RS-232 or RS-485) and port 2 is a single RS-485/422 transceiver. Operates from a single 5V supply An on-board charge pump generates RS-232 compliant 5V Tx output levels from a single V supply as low as 4.5V. The Two independent ports: port 1 set for RS-232 (2 transceivers) CC transceivers are RS-232 compliant, with the Rx inputs and port 2 for RS-485/RS-422 (1 transceiver) handling up to 25V. True flow-through pinouts (Rx inputs and Tx outputs all on the same side) simplify board layouts The port 2 transceiver supports both the RS-485 and RS-422 differential communication standards. The receiver features Pb-free (RoHS compliant)full fail-saf operation, so the Rx output remains in a high Full fail-safe (open/short) RS-485/422 port 2 Rx state if the inputs are open or shorted together. The transmitter supports two data rates, one of which is slew rate User selectable RS-485 data rates limited for problem free communication at low data rates. The - Fast speed up to 20Mbps active low Rx enable pin (RE485) allows Tx/Rx direction - Slew rate limited up to 115kbps control, via a single signal, simply by connecting the corresponding DE485 and RE485 pins together. Fast RS-232 data rate 460kbps (Minimum) Small charge pump capacitors 4 x 0.1F The ISL33354E and ISL33357E also include a shutdown function, which disables the Tx and Rx outputs, disables the Low current shutdown mode 55A charge pumps and places the IC in a low current (55A) mode. QFN package saves board space (ISL33357E only) The ISL33357E is a QFN packaged device for space constrained applications. Applications Gaming applications (e.g., slot machines) Related Literature Single board computers For a full list of related documents, visit our website Factory automation - ISL33354E, ISL33357E product pages Security networks Industrial/process control networks Level translators (e.g., RS-232 to RS-422) Point-of-sale equipment TABLE 1. SUMMARY OF FEATURES PORT 2 PORT 1 PORT 2 LOW POWER RS-485 DATA RATE RS-232 DATA RATE RS-485 Rx AND Tx PART NUMBER PACKAGE OPTION SHUTDOWN ISL33354E 28 Ld SSOP 20M, 115k 650k YES YES ISL33357E 40 Ld QFN (6 x 6mm) 20M, 115k 650k YES YES FN8775 Rev 1.00 Page 1 of 23 Oct 21, 2016ISL33354E, ISL33357E Ordering Information PART NUMBER PART TEMPERATURE TAPE AND REEL PACKAGE (Notes 2, 3) MARKING RANGE (C) (UNITS) (RoHS COMPLIANT) PKG. DWG. ISL33354EIAZ 33354 EIAZ -40 to +85 - 28 Ld SSOP M28.209 ISL33354EIAZ-T (Note 1) 33354 EIAZ -40 to +85 1k 28 Ld SSOP M28.209 ISL33357EIRZ 33357E IRZ -40 to +85 - 40 Ld QFN L40.6x6 ISL33357EIRZ-T (Note 1) 33357E IRZ -40 to +85 1k 40 Ld QFN L40.6x6 ISL33357EIRZ-T7A 33357E IRZ -40 to +85 250 40 Ld QFN L40.6x6 (Note 1) NOTES: 1. Refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), see product information page for ISL33354E, ISL33357E. For more information on MSL, see tech brief TB363. TABLE 2. KEY DIFFERENCES BETWEEN FAMILY OF PARTS VCC RS485 (bps) RS232 (bps) PART NUMBER (V) PKG DATA RATE DATA RATE ISL33354E 5 28Ld SSOP 20M, 115k 650k ISL33357E 5 40Ld QFN 20M, 115k 650k ISL33334E 3.3 28Ld SSOP 20M, 115k 400k ISL33337E 3.3 40Ld QFN 20M, 115k 400k NOTE: For a full list of dual protocol transceivers, please visit our website. Pin Configurations ISL33354E ISL33357E (28 LD SSOP) (40 LD QFN) TOP VIEW TOP VIEW C1+ 1 28 C2+ 40 39 38 37 36 35 34 33 32 31 PORT 1 C1- 2 27 C2- PORT 1 V+ 3 26 V CC V+ R2OUT 1 30 R R 25 R2OUT R1IN 4 R1IN 2 29 R R1OUT R2IN 5 24 R1OUT R R2IN 3 28 T2IN T1OUT 6 23 T2IN D D T2OUT 7 22 T1IN T1OUT 4 27 T1IN *GND 8 21 SHDN D D T2OUT 5 26 *V CC *V 9 20 DI CC *GND 6 25 SHDN Y 10 19 DE485 PORT 2 *V 7 24 Z 11 D 18 RO CC DI D A 12 17 V- 8 23 Y DE485 R B 13 16 RE485 9 22 RO Z SLOW485 14 15 GND PORT 2 R EP DNC 10 21 A * NOT A SUPPLY PIN, BUT MUST BE CONNECTED TO THE 11 12 13 14 15 16 17 18 19 20 NOTED SUPPLY. FN8775 Rev 1.00 Page 2 of 23 Oct 21, 2016 NC B NC NC SLOW485 C1- *V CC C1+ C2+ GND GND C2- V CC *GND NC RE485 V- NC V NC CC