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Interface and Driver Circuit
(a.)For RS-232 Driver
Part No. Features Vin IOS(H) VDD \ VSS Package
Vcc(V) IOS(L) VOH VOL
75185 Multiple RS-232 Driver & Receiver
*Single Chip with Easy Interface between UART and Serial-Port connector of PC.
*Three Drivers and five Receivers Meet or Exceed the Requirements of TIA/EIA-232-F and ITU v.28 Standards.
*Designed to Support Data Rates up to 120 kbps 		4.5 ~ 5.5 -4.5~-19.5(mA) VDD＝9.0V，Vss＝-9.0V(Typ) DIP-20 SOP-20 SSOP-20 TSSOP-20
±7.5；±9；±15 4.5~ 19.5(mA) 7.5V(RL=3KΩ) -7.5V(RL=3KΩ)
75323 Multiple RS-232 Driver & Receiver
* Single chip with easy interface between UART and serial-port
connector
* Data rates : 20 kb/s.
* Complement to the UTC 75232. 		4.5 ~ 5.5 -4.5~-19.5(mA) VDD＝9.0V，Vss＝-9.0V(Typ) DIP-20 SOP-20 
±7.5；±9；±13.5 4.5~19.5(mA) 7.5V(RL=3KΩ) -7.5V(RL=3KΩ)
75232 Multiple RS-232 Driver & Receiver
* Single chip with easy interconnection of the UART and
serial-port connector of personal computer.
* Meets standard TIA/EIA-232-F and ITU V.28
* Up to 120 kbps data rate
* 20-pin SOP/ DIP/SSOP/TSSOP packages 		4.5 ~ 5.5 -8.5~-19.5(mA) VDD＝9.0V，Vss＝-9.0V(Typ) DIP-20 SOP-20 SSOP-20 TSSOP-20
±7.5；±9；±13.5 8.5~19.5(mA) 7.5V(RL=3KΩ) -7.5V(RL=3KΩ)
UT213 Enhanced RS-232 Drivers & Receivers
* Operates With 3.0V~5.5V Power Supply
* Four Drivers and Five Receivers
* Operates Up To 120 kbps
* Designed to Transmit at a Data Rate of 120 kbps
* Low Standby Current (15μA Typical)
* External Capacitors (4*0.1μF)
* Accepts 5.0V Logic Input With 3.3V Supply
* Serial-Mouse Drivability
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins 		3.0 ~ 5.5  -60.0(mA) - SOP-28 SSOP-28
- 60.0(mA) 5.4V(RL=3KΩ) -5.4V(RL=3KΩ)
UT232A Enhanced RS-232 Drivers & Receivers
* Single power supply: 3.3V~5.5V
* Low power supply current: 10mA
* Multiple drivers and receivers
* Receiver input levels: ±25V
* 3-State outputs of TTL/CMOS receiver
* High output slew rate: 10V/μs under load
* High data rate: 120kbps under load
* Four external small charge pump capacitors: 0.1μF
* Exceeds ±8KV HBM ESD protection for RS-232 I/O pins 		3.3 ~ 5.5  -18.0(mA) Vcc＝5.0V DIP-16 SOP-16 
- 18.0(mA) 9.0V(RL=3KΩ) -9.0V(RL=3KΩ)
UT232E Enhanced RS-232 Drivers & Receivers
* Single power supply: 3.3V~5.5V
* Low power supply current: 3.0mA
* Multiple drivers and receivers
* Receiver input levels: ±25V
* 3-State outputs of TTL/CMOS receiver
* High output slew rate: 10V/μs under load
* High data rate: 120kbps under load
* Four external small charge pump capacitors: 0.1μF
* Exceeds ±8KV HBM ESD protection for RS-232 I/O pins 		3.3 ~ 5.5  -18.0(mA) Vcc＝5.0V DIP-16 SOP-16 SSOP-16
- 18.0(mA) 6.0V(RL=3KΩ) -6.0V(RL=3KΩ)
UT3202 MULTICHANNEL RS-232 LINE TRANSCEIVERS
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins
* Meets the Requirements of TIA/EIA-232-F and ITU V.28 Standards
* Operates With 3.0V to 5.5V VCC Supply
* Operates Up To 250kbit/s Data Rate
* Two Drivers and Two Receivers
* External Capacitors 4×0.1μF
* Accepts 5.0V Logic Input With 3.3V Supply 		3.0 ~ 5.5  -60.0(mA)(Max) Vcc＝5.0V SOP-16 TSSOP-16
- 60.0(mA)(Max) 5.4V(RL=3KΩ) -5.4V(RL=3KΩ)
UT3221/E MULTICHANNEL RS-232 LINE TRANSCEIVERS
* Operates With 3.0V to 5.5V Power Supply
* One Driver and One Receiver
* Operates Up To 250 kbps
* Designed to Transmit at a Data Rate of 250 kbps
* Low Standby Current (1μA Typical)
* External Capacitors (4*0.1μF)
* Accepts 5.0V Logic Input With 3.3V Supply
* Serial-Mouse Drivability
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins 		3.0 ~ 5.5  -60.0(mA)(Max) - TSSOP-16 SSOP-16
- 60.0(mA)(Max) 5.4V(RL=3KΩ) -5.4V(RL=3KΩ)
UT3222 MULTICHANNEL RS-232 LINE TRANSCEIVERS
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins
* Meets the Requirements of TIA/EIA-232-F and ITU V.28 Standards
* Operates With 3.0V to 5.5V VCC Supply
* Operates Up To 250kbit/s Data Rate
* Two Drivers and Two Receivers
* Low Standby Current 1μA Typical
* External Capacitors 4×0.1μF
* Accepts 5.0V Logic Input With 3.3V Supply 		3.0 ~ 5.5  -60.0(mA)(Max) Vcc＝5.0V TSSOP-20 SSOP-20
- 60.0(mA)(Max) 5.4V(RL=3KΩ) -5.4V(RL=3KΩ)
UT3223 RS-232 Transceivers with AutoShutdown
* Operates With 3.0V~5.5V Power Supply
* Two Drivers and Two Receivers
* Operates Up To 250 kbps
* Designed to Transmit at a Data Rate of 250 kbps
* Low Standby Current (1μA Typical)
* External Capacitors (4*0.1μF)
* Accepts 5.0V Logic Input With 3.3V Supply
* Serial-Mouse Drivability
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins 		3.0 ~ 5.5  -60.0(mA)(Max) Vcc＝5.0V TSSOP-20 SSOP-20
- 60.0(mA)(Max) 5.4V(RL=3KΩ) -5.4V(RL=3KΩ)
UT3227 RS-232 Transceivers with AutoShutdown
* Operates With 3.0V to 5.5V Power Supply
* One Driver and one Receiver
* Operates Up To 1Mbps
* Designed to Transmit at a Data Rate of 1Mbps
* Low Standby Current (1μA Typical)
* External Capacitors (4×0.1μF)
* Accepts 5.0V Logic Input With 3.3V Supply
* Serial-Mouse Drivability
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins 		3.0 ~ 5.5  -60.0(mA)(Max) - SSOP-16
TSSOP-20
- 60.0(mA)(Max) 5.4V(RL=3KΩ) -5.4V(RL=3KΩ)
UT3232 True RS-232 Transceivers
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins
* Meets the Requirements of TIA/EIA-232-F and ITU V.28 Standards
* Operates With 3.0V to 5.5V VCC Supply
* Operates Up To 250kbit/s Data Rate
* Two Drivers and Two Receivers
* External Capacitors 4×0.1μF
* Accepts 5.0V Logic Input With 3.3V Supply 		3.0 ~ 5.5  -60.0(mA)(Max) Vcc＝5.0V SOP-16 SSOP-16 TSSOP-16
- 60.0(mA)(Max) 5.4V(RL=3KΩ) -5.4V(RL=3KΩ)
UT3238 +3.3V TO +5.0V POWER SUPPLY, 250KBPS, RS-232 LINE DRIVERS/RECEIVERS
* Operates With 3.3V~5.0V Power Supply
* Five Drivers and Three Receivers
* Operates Up To 250 kbps
* Designed to Transmit at a Data Rate of 250 kbps
* Low Standby Current (1μA Typical)
* External Capacitors (4*0.1μF)
* Accepts 5.0V Logic Input With 3.3V Supply
*Always-Active Non-inverting Receiver Output (R1OUTB)
* Serial-Mouse Drivability
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins 		3.3 ~ 5.5  -60.0(mA)(Max) Vcc＝5.0V TSSOP-28
- 60.0(mA)(Max) 5.0V(RL=3KΩ) -5.0V(RL=3KΩ)
UT3243A 3.0V TO +5.5V POWER SUPPLY, 235KBPS,MULTICHANNAEL RS-232 LINE DRIVERS/RECEIVERS
* Operates With 3.0V ~ 5.5V Power Supply
* Three Drivers and Five Receivers
* Operates Up To 235 kbps
* Designed to Transmit at a Data Rate of 235 kbps
* Low Standby Current (1uA Typical)
* External Capacitors (4×0.1μF)
* Accepts 5.0V Logic Input With 3.3V Supply
* Always-Active Non-inverting Receiver Output (R2OUTB)
* Serial-Mouse Drivability
* ESD(HBM) Protected ±8KV(MIN.) for RS-232 Pins 		3.0 ~ 5.5  -60.0(mA)(Max) Vcc＝6.0V SSOP-28 TSSOP-28
QFN-32(5×5)
- 60.0(mA)(Max) 5.4V(RL=3KΩ) -5.4V(RL=3KΩ)
USN75176 Differential Bus Transceiver  -250.0(mA)(Max) Vcc＝4.75~5.25V DIP-8
250.0(mA)(Max) 3.7V 1.1V



(b.)For RS-485/RS-422 Driver 
Part No. Features Vin IOS(H) VDD \ VSS Package
IOS(L) VOH VOL
UTRS458 POLARITY FREE, FAIL-SAFE 500KBPS, RS-485 / RS-422 TRANSCEIVERS WITH ±12KV ESD-PROTECTED
* Meet the requirements of the EIA/TIA-485 standards.
* 5.0V single power supply.
* 1μA low-current shutdown mode.
* HBM ±12kV ESD protection.
* True fail-safe receiver while maintaining EIA/TIA-485
compatibility.
* Hot-swap glitch free protection on control inputs.
* Up to 256 transceivers on the bus.
* Maximum baud rate up to 500Kbps.
* Transmitter short circuit current limit.
* Thermal shutdown for overload protection.
* Polarity-Free for RS485 bus pins. 		5 V -250.0(mA)(Max) - SOP-8
250.0(mA)(Max) 5.5V(Max) 0.5V
UTRS485 FAIL-SAFE, 500KBPS, RS-485 / RS-422 TRANSCEIVERS WITH ±12KV ESD-PROTECTED
* Meet the requirements of the EIA/TIA-485 standards.
* 5.0V single power supply.
* True fail-safe receiver while maintaining EIA/TIA-485 compatibility.
* Hot-Swap glitch free protection on control inputs.
* Up to 256 transceivers on the bus.
* Driver short circuit current limit.
* Thermal shutdown for overload protection. 		5 V  250.0(mA)(Max) - DIP-8 SOP-8
250.0(mA)(Max) 3.5V 0.5V
UTRS3080 FAIL-SAFE, 500KBPS, RS-485 / RS-422 TRANSCEIVERS WITH ±12KV ESD-PROTECTED
* True fail-safe receiver while maintaining EIA/TIA-485 compatibility
* Enhanced slew-rate limiting facilitates Error-Free data transmission
* 5.0V single power supply
* 1μA low-current shutdown mode
* Allow up to 256 transceivers on the Bus
* HBM ±12kV ESD-protected.
* Driver short circuit current limit
* Thermal shutdown for overload protection 		5 V -250.0(mA)(Max) - SOP-14
250.0(mA)(Max) 5.5V(Max) 0.4V
UTRS3082 FAIL-SAFE, 115KBPS, RS-485 / RS-422 TRANSCEIVERS WITH ±12KV ESD-PROTECTED
* Meet the requirements of the EIA/TIA-485 standards.
* 5.0V single power supply.
* 1μA low-current shutdown mode.
* HBM ±12kV ESD protection.
* True fail-safe receiver while maintaining EIA/TIA-485 compatibility.
* Hot-swap glitch free protection on control inputs.
* Up to 256 transceivers on the bus.
* Maximum baud rate up to 115Kbps.
* Transmitter short circuit current limit.
* Thermal shutdown for overload protection. 		5 V -95.0(mA)(Max) - SOP-8
95.0(mA)(Max) 5.5V(Max) 0.5V
UTRS3085 FAIL-SAFE, 2.5MBPS, RS-485 / RS-422 TRANSCEIVERS WITH ±12KV ESD-PROTECTED
* True fail-safe receiver while maintaining EIA/TIA-485 compatibility.
* Enhanced slew-rate limiting facilitates Error-Free data transmission.
* 5.0V single power supply.
* 1μA low-current shutdown mode.
* Allow up to 256 transceivers on the Bus.
* HBM ±12kV ESD-protected.
* Driver short circuit current limit.
* Thermal shutdown for overload protection. 		5 V -250.0(mA)(Max) - DIP-8 SOP-8
250.0(mA)(Max) 5.5V(Max) 0.4V
UTRS3088 FAIL-SAFE, 1.0MBPS, RS-485 / RS-422 TRANSCEIVERS WITH ±15KV ESD-PROTECTED
* Meet the requirements of the EIA/TIA-485 standards.
* 5.0V single power supply.
* 1μA low-current shutdown mode.
* HBM ±15kV ESD protection.
* True fail-safe receiver while maintaining EIA/TIA-485 compatibility.
* Hot-Swap glitch free protection on control inputs.
* Up to 256 transceivers on the bus.
* Maximum baud rate up to 1.0Mbps.
* Transmitter short circuit current limit.
* Thermal shutdown for overload protection. 		5 V -250.0(mA)(Max) - SOP-8
250.0(mA)(Max) 5.5V(Max) 0.5V


(c.) For Darlington Driver
Part No. Features Output Voltage Input Voltage(Output On) Package
PD(mW) Input Voltage(Output Off)
ULN2001 3 CH Darlington Sink Driver (Ri=2.7k)
* Output Current (Single Output): 500mA max
* High Sustaining Voltage Output: 50V min
* Inputs Compatible with Various Types of Logic
* Output Clamp Diodes
* Relay-Driver Applications 		0V~50.0V 2.8V ~ 12.0V DIP-8 SOP-8
750/625mW 0V ~ 0.7V
ULN2001LC 3 CH Darlington Sink Driver (Ri=2.7k)
* Output Current (Single Output): 100mA max
* High Sustaining Voltage Output: 50V min
* Inputs Compatible with Various Types of Logic
* Output Clamp Diodes
* Relay-Driver Applications 		0V~50.0V 2.8V ~ 12.0V DIP-8 SOP-8
750/625mW 0V ~ 0.7V
ULN2003 7 CH Darlington Sink Driver (Ri=2.7k)
*Output Current (Single Output): 500mA (Max.)
*High Sustaining Voltage Output: 50V (Min.)
*Output Clamp Diodes
*Inputs Compatible With Various Types Of Logic 		-0.5V~50.0V 2.8V ~ 24.0V DIP-16 SOP-16
TSSOP-16
1470/1250/620mW 0V ~ 0.7V
ULN2003R 7 CH HIGH VOLTAGE HIGH CURRENT DARLINGTON TRANSISTOR ARRAY (Ri=2.7k)
* Output Current (Single Output): 500mA max
* High Sustaining Voltage Output: 50V min
* Inputs Compatible with Various Types of Logic
* Output Clamp Diodes
* Relay-Driver Applications 		-0.5V~50.0V 2.8V ~ 24.0V SOP-16
540/65mW 0V ~ 0.7V
ULN2004 7 CH Darlington Sink Drivers (Ri=10.5k)
*Output current (single output): 500mA (MAX.)
*High sustaining voltage output: 50V (MIN.)
*Output clamp diodes
*Inputs compatible with various types of logic 		-0.5V~50.0V 6.2V ~ 24.0V DIP-16 SOP-16
1470/625mW 0V ~ 1.0V
ULN2012 HIGH VOLTAGE HIGH CURRENT DARLINGTON ARRAY
* PMOS Compatible Inputs
* Output Current to 600mA
* Output Voltage to 50V
* Transient-Protected Outputs 		-0.5V~50.0V 17.0V SOP-16
1250mW -
ULN2803 8-CH Darlington Arrays (Ri=2.7k)
*Output current (single output) 500mA MAX.
*High sustaining voltage output 50V MIN.
*Output clamp diodes
*Inputs compatible with various types of logic 		-0.5V~50.0V Max=2.4V DIP-18 SOP-18
SOP-20 TSSOP-20
1470/625mW -
ULN2804 8-CH Darlington Arrays (Ri=10.5k)
* Eight Darlingtons with common emitters
* TTL, PMOS or CMOS Compatible inputs
* Peak output current to 500mA
* Output voltage to 50V
* Clamp diodes for transient suppression
* DIP-28 and SOP-18 packages 		0V~50.0V Max=5.0V DIP-18 SOP-18
1500/950mW -
62783 8-CH High Voltage Source Driver
*High output voltage: VCC = 50V (MIN.)
* Output current (single output) IOUT = -500mA (MIN.)
* Output clamp diodes and single supply voltage
* Input compatible with various types of logic
* TTL, 5V CMOS 		50.0V(MAX) 2.0V ~ 15.0V DIP-18 SOP-18 SOP-20 TSSOP-20
1470/960mW/960mW 0V~0.8V
62784 8-CH High Voltage Source Driver
* High output voltage: VCC = 50V (MIN.)
* Output current (single output):-500mA (MIN.)
* Output clamp diodes and single supply voltage
* Input compatible with kinds of types of logic
* 6~15V PMOS, CMOS 		50.0V(MAX) 4.5V ~ 30.0V SOP-18
1470/960mW 0V ~ 2.0V
ULN202L05 4-CH Darlington Sink Driver AND 3-Terminal
0.2A 5V Voltage Regulator
For Darlington Sink Drivers
* Output current (single output): 500mA max
* High sustaining voltage output: 50V min
* Output clamp diodes
* Inputs compatible with various types of logic
For 5V VOLTAGE REGULATOR
* Output Current up to 200mA
* Thermal Overload Shutdown Protection
* Short Circuit Current Limiting 		Vo=-0.5V~50.0V Max=2.0V SOP-14
900mW -

(d.) For MCU Interface
Part No. Features Supply Voltage (V) VDD Package
PD(mW) Is
LS3718 20-Bit Serial To Parallel Converter
* 20-Bit serial in parallel out
* Cascade connection
* Operating voltage 5V±10%
* Hysteresis input 0.5V typ
* Output current 25mA
* Operating frequency 5MHz or more 		-0.5V~7.0V 4.5~5.5V SOP-28
500mW 0.1(mA)


(e.) For Parallel Port Single Termination 
Part No. Features Supply Voltage (V) Breakdown Voltage Package
PD(mW) Leakage Current
URCZ1284-XX Parallel Port Single Termination With ±15KV ESD Protection
* Highly integrated termination
* EMI noise filtering
* RFI noise filtering
* Withstand ±8 kV contact-discharge 		0V~5.5V 6V QSOP-28
1000mW 10(mA)



(f.) IC CARD INTERFACE 
Part No. Features Supply Voltage (V) Breakdown Voltage Package
PD(mW) Leakage Current
UTDA8024 IC CARD INTERFACE
* Three specifically protected half-duplex bidirectional buffered
I/O lines to card contacts C4, C7 and C8
* Automatic activation and deactivation sequences; initiated by
software or by hardware in the event of a short-circuit, card
take-off, overheating, VDD or VDDP drop-out
* 26MHz integrated crystal oscillator
* DC/DC converter for VCC generation separately powered from a
5 V ± 20% supply (VDDP and PGND)
* 3V or 5V ± 5% regulated card supply voltage (VCC) with
appropriate decoupling has the following capabilities:
- ICC<80mA at VDDP=4~6.5V
- Handles current spikes of 40nAs up to 20MHz
- Controls rise and fall times
- Filtered overload detection at approximately 120mA
* Built-in debounce on card presence contacts
* Supply supervisor for spike-killing during power-on and
power-off and Power-on reset (threshold fixed internally
or externally by a resistor bridge)
* Thermal and short-circuit protection on all card contacts
* Clock generation for cards up to 20MHz (divided by 1, 2, 4 or 8
through CLKDIV1 and CLKDIV2 signals) with synchronous
frequency changes
* Non-inverted control of RST via pin RSTIN
* ISO 7816, GSM11.11 and EMV (payment systems)
Compatibility
* Enhanced ESD protection on card side (>6kV)
* One multiplexed status signal OFF 		150.0(mA)(Max) - TSSOP-28
100.0(mA)(Max) 0.4V 0.3V

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