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SP232ECT Datasheet(PDF) 4 Page - Sipex Corporation |
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SP232ECT Datasheet(HTML) 4 Page - Sipex Corporation |
4 / 15 page Rev. 06/20/02 SP202E Series High Performance RS232 Transceivers © Copyright 2002 Sipex Corporation 4 R2 98 R IN R OUT 2 R1 12 13 R IN R OUT 1 T2 10 7 T IN 2 T OUT 2 T1 11 14 T IN 1 T OUT 1 15 GND 400k Ω 400k Ω 3 1 C + C - 1 1 6 16 V CC V+ + + 0.1 F 6.3V µ +5V to +10V Voltage Doubler +5V INPUT 2 V- 2 1 5k Ω 0.1 F 16V µ 5k Ω 5 4 C + C - 2 2 + 0.1 F 16V µ +10V to -10V Voltage Inverter 0.1 F 6.3V µ 10 F 6.3V µ SP232E + + * *The negative terminal of the V+ storage capacitor can be tied to either VCC or GND. Connecting the capacitor to VCC (+5V) is recommended. SP202E Figure 1. Typical Circuit using the SP202E or SP232E. FEATURES… The SP202E/232E/233E/310E/312E devices are a family of line driver and receiver pairs that meet the specifications of RS-232 and V.28 serial protocols with enhanced ESD perfor- mance. The ESD tolerance has been improved on these devices to over ±15KV for both Human Body Model and IEC1000-4-2 Air Discharge Method. These devices are pin-to-pin compat- ible with Sipex's 232A/233A/310A/312A devices as well as popular industry standards. As with the initial versions, the SP202E/232E/ 233E/310E/312E devices feature10V/ µs slew rate, 120Kbps data rate under load, 0.1 µF charge pump capacitors, overall ruggedness for commercial applications, and increased drive current for longer and more flexible cable configurations. This family also features Sipex's BiCMOS design allowing low power operation without sacrificing performance. The SP202E/232E/233E/310E/312E devices have internal charge pump voltage converters which allow them to operate from a single +5V supply. The charge pumps will operate with polarized or non-polarized capacitors ranging from 0.1 to 10 µF and will generate the ±10V needed to generate the RS-232 output levels. Both meet all EIA RS-232 and ITU V.28 specifications. The SP310E provides identical features as the SP232E with a single control line which simultaneously shuts down the internal DC/DC converter and puts all transmitter and receiver outputs into a high impedance state. The SP312E is identical to the SP310E with separate tri-state and shutdown control lines. THEORY OF OPERATION The SP232E, SP233E, SP310E and SP312E devices are made up of three basic circuit blocks – 1) a driver/transmitter, 2) a receiver and 3) a charge pump. Each block is described below. Driver/Transmitter The drivers are inverting transmitters, which ac- cept TTL or CMOS inputs and output the RS-232 signals with an inverted sense relative to the input logic levels. Typically the RS-232 output voltage swing is ±9V. Even under worst case loading conditions of 3kOhms and 2500pF, the output is guaranteed to be ±5V, which is consistent with the RS-232 standard specifications. The transmitter outputs are protected against infinite short-circuits to ground without degradation in reliability. |
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Similar Description - SP232ECT |
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