True +3.0V to +5.5V RS-232 Transceivers

® SP3222E/3232E True +3.0V to +5.5V RS-232 Transceivers ■ Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply ■ Minimum 120Kbps Data Rate Under Full Load ■ 1µA Low-Power Shutdown with Receivers Active (SP3222E) ■ Interoperable with RS-232 down to +2.7V power source ■ Enhanced ESD Specifications: ±15kV Human Body Model ±15kV IEC1000-4-2 Air Discharge ±8kV IEC1000-4-2 Contact Discharge DESCRIPTION The SP3222E/3232E series is an RS-232 transceiver solution intended for portable or handheld applications such as notebook or palmtop computers. The SP3222E/3232E series has a high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3222E/3232E series to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V. The SP3222E/3232E are 2-driver/2-receiver devices. This series is ideal for portable or hand-held applications such as notebook or palmtop computers. The ESD tolerance of the SP3222E/3232E devices are over ±15kV for both Human Body Model and IEC1000-4-2 Air discharge test methods. The SP3222E device has a low-power shutdown mode where the devices' driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1µA. SELECTION TABLE MODEL SP3222 SP3232 Power Supplies +3.0V to +5.5V +3.0V to +5.5V RS-232 Drivers 2 2 RS-232 Receivers 2 2 External Components 4 4 Shutdown Yes No TTL 3-State Yes No No. of Pins 18, 20 16 Rev. 11/07/02 SP3222E/3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2001 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability and cause permanent damage to the device. VCC................................................................-0.3V to +6.0V V+ (NOTE 1)................................................-0.3V to +7.0V V- (NOTE 1)................................................+0.3V to -7.0V V+ + |V-| (NOTE 1)....................................................+13V ICC (DC VCC or GND current).................................±100mA Input Voltages TxIN, EN ................................................... -0.3V to +6.0V RxIN .......................................................................... ±15V Output Voltages TxOUT ...................................................................... ±15V RxOUT ........................................... -0.3V to (VCC + 0.3V) Short-Circuit Duration TxOUT ............................................................ Continuous Storage Temperature .............................. -65°C to +150°C Power Dissipation Per Package 20-pin SSOP (derate 9.25mW/oC above +70oC) ..... 750mW 18-pin PDIP (derate 15.2mW/oC above +70oC) .... 1220mW 18-pin SOIC (derate 15.7mW/oC above +70oC) ... 1260mW 20-pin TSSOP (derate 11.1mW/oC above +70oC) .. 890mW 16-pin SSOP (derate 9.69mW/oC above +70oC) ..... 775mW 16-pin PDIP (derate 14.3mW/oC above +70oC) .... 1150mW 16-pin Wide SOIC (derate 11.2mW/oC above +70oC) 900mW 16-pin TSSOP (derate 10.5mW/oC above +70oC) .. 850mW 16-pin nSOIC (derate 13.57mW/°C above +70°C) .. 1086mW NOTE 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. SPECIFICATIONS Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.0V with TAMB = TMIN to TMAX PARAMETER DC CHARACTERISTICS Supply Current Shutdown Supply Current 0.3 1.0 1.0 10 mA µA no load, TAMB = +25oC, VCC = 3.3V SHDN = GND, TAMB = +25oC, VCC = +3.3V MIN. TYP. MAX. UNITS CONDITIONS LOGIC INPUTS AND RECEIVER OUTPUTS Input Logic Threshold LOW Input Logic Threshold HIGH Input Leakage Current Output Leakage Current Output Voltage LOW Output Voltage HIGH DRIVER OUTPUTS Output Voltage Swing ±5.0 ±5.4 V 3kΩ load to ground at all driver outputs, TAMB = +25oC VCC = V+ = V- = 0V, TOUT = +2V VOUT = 0V VOUT = +15V VOUT = +12V,VCC= 0V to 5.5V,drivers disabled VCC-0.6 VCC-0.1 2.0 2.4 ±0.01 ±0.05 ±1.0 ±10 0.4 0.8 V V µA µA V V TxIN, EN, SHDN, Note 2 VCC = 3.3V, Note 2 VCC = 5.0V, Note 2 TxIN, EN, SHDN, TAMB = +25oC receivers disabled IOUT = 1.6mA IOUT = -1.0mA Output Resistance Output Short-Circuit Current Output Leakage Current 300 ±35 ±70 ±60 ±100 ±25 Ω mA mA µA Rev. 11/07/02 SP3222E/3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2002 Sipex Corporation 2 SPECIFICATIONS (continued) Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.0V with TAMB = TMIN to TMAX. Typical Values apply at VCC = +3.3V or +5.0V and TAMB = 25oC. PARAMETER RECEIVER INPUTS Input Voltage Range Input Threshold LOW Input Threshold HIGH Input Hysteresis Input Resistance TIMING CHARACTERISTICS Maximum Data Rate Driver Propagation Delay Receiver Propagation Delay Receiver Output Enable Time Receiver Output Disable Time Driver Skew Receiver Skew Transition-Region Slew Rate 120 235 1.0 1.0 0.3 0.3 200 200 100 200 500 1000 30 kbps µs µs µs ns ns ns ns V/µs | tPHL - tPLH |, TAMB = 25oC | tPHL - tPLH | VCC = 3.3V, RL = 3KΩ, TAMB = 25oC, measurements taken from -3.0V to +3.0V or +3.0V to -3.0V RL=3kΩ, CL=1000pF, one driver switching tPHL, RL = 3KΩ, CL = 1000pF tPLH, RL = 3KΩ, CL = 1000pF tPHL, RxIN to RxOUT, CL=150pF tPLH, RxIN to RxOUT, CL=150pF 3 -15 0.6 0.8 1.2 1.5 1.5 1.8 0.3 5 7 2.4 2.4 +15 V V V V kΩ VCC=3.3V VCC=5.0V VCC=3.3V VCC=5.0V MIN. TYP. MAX. UNITS CONDITIONS NOTE 2: Driver input hysteresis is typically 250mV. Rev. 11/07/02 SP3222E/3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2001 Sipex Corporation 3 TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise noted, the following performance characteristics apply for VCC = +3.3V, 120kbps data rates, all drivers loaded with 3kΩ, 0.1µF charge pump capacitors, and TAMB = +25°C. 6 14 12 10 Slew Rate [V/µs] Transmitter Output Voltage [V] 4 2 0 0 -2 -4 500 1000 1500 2000 Vout+ Vout- 8 6 4 2 +Slew -Slew -6 Load Capacitance [pF] 0 0 500 1000 1500 Load Capacitance [pF] 2000 2330 Figure 1. Transmitter Output Voltage VS. Load Capacitance for the SP3222 and the SP3232 Figure 2. Slew Rate VS. Load Capacitance for the SP3222 and the SP3232 50 45 40 35 Supply Current [mA] 118KHz 60KHz 10KHz 30 25 20 15 10 5 0 0 500 1000 1500 2000 2330 Load Capacitance [pF] Figure 3. Supply Current VS. Load Capacitance when Transmitting Data for the SP3222 and the SP3232 Rev. 11/07/02 SP3222E/3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2002 Sipex Corporation 4 PIN NUMBER NAME FUNCTION SP3222E DIP/SO EN C1+ V+ C1C2+ C2VT1OUT T2OUT R1IN R2IN R1OUT R2OUT T1IN T2IN GND VCC SHDN N.C. Receiver Enable. Apply logic LOW for normal operation. Apply logic HIGH to disable the receiver outputs (high-Z state). Positive terminal of the voltage doubler charge-pump capacitor. +5.5V generated by the charge pump. Negative terminal of the voltage doubler charge-pump capacitor. Positive terminal of the inverting charge-pump capacitor. Negative terminal of the inverting charge-pump capacitor. -5.5V generated by the charge pump. RS-232 driver output. RS-232 driver output. RS-232 receiver input. RS-232 receiver input. TTL/CMOS reciever output. TTL/CMOS reciever output. TTL/CMOS driver input. TTL/CMOS driver input. Ground. +3.0V to +5.5V supply voltage Shutdown Control Input. Drive HIGH for normal device operation. Drive LOW to shutdown the drivers (high-Z output) and the onboard power supply. No Connect. 1 2 3 4 5 6 7 15 8 14 9 13 10 12 11 16 17 18 SSOP/TSSOP 1 2 3 4 5 6 7 17 8 16 9 15 10 13 12 18 19 20 11, 14 SP3232E 1 2 3 4 5 6 14 7 13 8 12 9 11 10 15 16 - Table 1. Device Pin Description Rev. 11/07/02 SP3222E/3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2001 Sipex Corporation 5 EN 1 20 SHDN 19 VCC 18 GND 17 SP3222E 16 T1OUT R1IN EN 1 18 SHDN 17 VCC 16 GND 15 SP3222E 14 T1OUT R1IN C1+ 2 V+ C1C2+ C2VT2OUT R2IN 3 4 5 6 7 8 9 C1+ 2 V+ C1C2+ C2VT2OUT R2IN 3 4 5 6 7 8 9 15 R1OUT 14 N.C. 13 R1OUT 12 T1IN 11 T2IN 10 R2OUT 13 T1IN 12 T2IN 11 N.C. R2OUT 10 DIP/SO SSOP/TSSOP Figure 4. Pinout Configurations for the SP3222E C1+ 1 V+ 2 C1C2+ C2VT2OUT R2IN 3 4 5 6 7 8 SP3232E 16 VCC 15 GND 14 T1OUT 13 R1IN 12 R1OUT 11 T1IN 10 9 T2IN R2OUT Figure 5. Pinout Configuration for the SP3232E Rev. 11/07/02 SP3222E/3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2002 Sipex Corporation 6 VCC + 19 VCC 2 C1+ 0.1µF 4 C15 C2+ C2 + 0.1µF 6 C213 T1IN 12 T2IN V+ 3 *C3 + 0.1µF C1 + 0.1µF 4 C15 C2+ + VCC 17 VCC 2 C1+ V+ 3 *C3 + 0.1µF C5 0.1µF C5 0.1µF C1 + SP3222E SSOP TSSOP V- 7 C4 + 0.1µF C2 + 0.1µF SP3222E DIP/SO V- 7 C4 + 0.1µF 6 C212 T1IN 11 T2IN T1OUT T2OUT 15 8 T1OUT T2OUT 17 8 RS-232 OUTPUTS LOGIC INPUTS LOGIC INPUTS RS-232 OUTPUTS 15 R1OUT LOGIC OUTPUTS 5kΩ 10 R2OUT 5kΩ 1 EN GND 18 R1IN 16 RS-232 INPUTS LOGIC OUTPUTS 13 R1OUT 5kΩ 10 R2OUT 5kΩ 1 EN GND R1IN 14 RS-232 INPUTS R2IN 9 R2IN 9 SHDN 20 SHDN 18 *can be returned to either VCC or GND 16 *can be returned to either VCC or GND Figure 6. SP3222E Typical Operating Circuits VCC + 16 VCC 1 C1+ 0.1µF 3 C14 C2+ C2 + 0.1µF 5 C211 T1IN 10 T2IN T1OUT T2OUT 14 7 RS-232 OUTPUTS V+ 2 *C3 + 0.1µF C5 0.1µF C1 + SP3232E V- 6 C4 + 0.1µF LOGIC INPUTS 12 R1OUT LOGIC OUTPUTS 5kΩ 9 R2OUT 5kΩ R1IN 13 RS-232 INPUTS R2IN 8 GND 15 *can be returned to either VCC or GND Figure 7. SP3232E Typical Operating Circuit Rev. 11/07/02 SP3222E/3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2001 Sipex Corporation 7 DESCRIPTION The SP3222E/3232E transceivers meet the EIA/ TIA-232 and V.28/V.24 communication protocols and can be implemented in battery-powered, portable, or hand-held applications such as notebook or palmtop comput