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High Speed Integrated Circuit Chip 5 V, 0.1 F CMOS RS-232 Drivers / Receivers ADM242ARZ
High Speed Integrated Circuit Chip 5 V, 0.1 F CMOS RS-232 Drivers / Receivers ADM242ARZ
Specifications
Model Number :
ADM242ARZ
Certification :
new & original
Place of Origin :
original factory
MOQ :
10pcs
Price :
Negotiate
Payment Terms :
T/T, Western Union, Paypal
Supply Ability :
3600pcs
Delivery Time :
1 day
Packaging Details :
Please contact me for details
Description :
2/2 Transceiver Full RS232 18-SOIC
Vcc :
6 V
V+ :
(Vcc – 0.3 V) to +13 V
V– :
+0.3 V to –13 V
Power Dissipation N-16 :
400 mW
Storage Temperature Range :
–65°C to +150°C
Lead Temperature (Soldering, 10 sec) :
300°C
Vapor Phase (60 sec) :
215°C
Infrared (15 sec) :
220°C
Description

High-Speed, 5 V, 0.1 F CMOS RS-232 Drivers/Receivers

ADM222/ADM232A/ADM242

FEATURES FUNCTIONAL BLOCK DIAGRAM

200 kB/s Transmission Rate

Small (0.1 F) Charge Pump Capacitors

Single 5 V Power Supply

Meets All EIA-232-E and V.28 Specifications

Two Drivers and Two Receivers

On-Board DC-DC Converters

±9 V Output Swing with 5 V Supply

±30 V Receiver Input Levels

Pin Compatible with MAX222/MAX232A/MAX242

APPLICATIONS

Computers

Peripherals

Modems

Printers

Instruments

GENERAL DESCRIPTION

The ADM222, ADM232A, ADM242 are a family of high-speed RS-232 line drivers/receivers offering transmission rates up to 200 kB/s. Operating from a single 5 V power supply, a highly efficient on-chip charge pump using small (0.1 µF) external capacitors allows RS-232 bipolar levels to be developed. Two RS-232

drivers and two RS-232 receivers are provided on each device.

The devices are fabricated on BiCMOS, an advanced mixed technology process that combines low power CMOS with highspeed bipolar circuitry. This allows for transmission rates up to 200 kB/s, yet minimizes the quiescent power supply current to under 5 mA.

The ADM232A is a pin-compatible, high-speed upgrade for the AD232 and for the ADM232L. It is available in 16-lead DIP and in both narrow and wide surface-mount (SOIC) packages.

The ADM222 contains an additional shutdown (SHDN) function that may be used to disable the device, thereby reducing the supply current to 0.1 µA. During shutdown, all transmit/receive functions are disabled. The ADM222 is available in 18-lead DIP and in a wide surface-mount (SOIC) package.

The ADM242 combines both shutdown (SHDN) and enable (EN) functions. The shutdown function reduces the supply current to 0.1 mA. During shutdown, the transmitters are disabled but the receivers continue to operate normally. The enable function allows the receiver outputs to be disabled thereby facilitating sharing a common bus. The ADM242 is available in 18-lead DIP and in a wide surface-mount (SOIC) package.

ADM222/ADM232A/ADM242–SPECIFICATIONS

(VCC = 5 V 10%. C1–C4 = 0.1 F; all specifications TMIN to TMAX unless otherwise noted.)

Parameter Min Typ Max Unit Test Conditions/Comments

RS-232 TRANSMITTERS

Output Voltage Swing ±5 ±9 V All Transmitter Outputs Loaded with

3 kΩ to Ground

Input Logic Threshold Low, VINL 1.7 0.8 V TIN

Input Logic Threshold High, VINH 2.4 1.7 V TIN

Logic Pull-Up Current 12 40 µA TIN = 0 V

Data Rate 200 kB/s

Output Resistance 300 Ω VCC = V+ = V– = 0 V, VOUT = ±2 V

Output Short Circuit Current

(Instantaneous) ±10 mA

RS-232 RECEIVERS

RS-232 Input Voltage Range –30 +30 V

RS-232 Input Threshold Low 0.8 1.2 V

RS-232 Input Threshold High 1.6 2.4 V

RS-232 Input Hysteresis 0.2 0.4 1.0 V VCC = 5 V

RS-232 Input Resistance 3 5 7 kΩ TA = 0°C to 85°C

TTL/CMOS Output Voltage Low,

VOL 0.05 0.4 V IOUT = 3.2 mA

TTL/CMOS Output Voltage High,

VOH 3.5 V IOUT = –1.0 mA

TTL/CMOS Output Short-Circuit

Current –2 –85 mA Source Current (VOUT = GND)*

TTL/CMOS Output Short-Circuit

Current 10 35 mA Sink Current (VOUT = VCC)*

TTL/CMOS Output Leakage

Current ±0.05 ±10 µA SHDN = GND/EN = VCC

0 V ≤ VOUT ≤ VCC

EN Input Threshold Low, VINL 1.4 0.8 V

EN Input Threshold High, VINH 2.0 1.4 V

POWER SUPPLY

Power Supply Current 4 8 mA No Load

13 mA 3 kΩ Load on Both Outputs

Shutdown Power Supply Current 0.1 10 µA

SHDN Input Leakage Current ±1 µA

SHDN Input Threshold Low, VINL 1.4 0.8 V

SHDN Input Threshold High, VINH 2.0 1.4 V

AC CHARACTERISTICS

Transition Region Slew Rate 3 8 30 V/µs CL = 50 pF to 1000 pF,

RL = 3 kΩ to 7 kΩ

Measured from +3 V to –3 V

or –3 V to +3 V

Transmitter Propagation Delay

TTL to RS-232 0.85 3.5 µs tPHLT

1.0 3.5 µs tPLHT

Receiver Propagation Delay RS-232

to TTL 0.1 0.5 µs tPHLR

0.3 0.5 µs tPLHR

Receiver Output Enable Time 125 500 ns tER

Receiver Output Disable Time 160 500 ns tDR

Transmitter Output Enable Time 250 µs SHDN Goes High

Transmitter Output Disable Time 3.5 µs SHDN Goes Low

Transmitter + to – Propagation Delay

Difference 150 ns

Receiver + to – Propagation Delay

Difference 200 ns

*Guaranteed by design, not production tested.

Specifications subject to change without notice.

Test Circuits

Product tags

rs485 chip

,

rs485 transceiver ic

,

dmx512 decoder
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High Speed Integrated Circuit Chip 5 V, 0.1 F CMOS RS-232 Drivers / Receivers ADM242ARZ

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Product Detail
Model Number :
ADM242ARZ
Certification :
new & original
Place of Origin :
original factory
MOQ :
10pcs
Price :
Negotiate
Payment Terms :
T/T, Western Union, Paypal
Contact Supplier
High Speed Integrated Circuit Chip 5 V, 0.1 F CMOS RS-232 Drivers / Receivers ADM242ARZ

ChongMing Group (HK) Int'l Co., Ltd

Active Member
3 Years
shenzhen
Since 2008
Business Type :
Distributor/Wholesaler
Main Products :
Flash Memory IC Chip, Programmable IC Chip, Computer IC Chips
Total Annual :
5000000-7000000
Employee Number :
80~100
Certification Level :
Active Member
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