MAX13235E：3Mbps RS-232 Transceivers with Low-Voltage Interface, ±15kV HBM ESD

Industry's Fastest RS-232 Transceivers (up to 3Mbps) with Integrated Logic-Level Translation

The MAX13234E–MAX13237E are +3V to +5.5V powered EIA/TIA-232 and V.28/V.24 communications interfaces with high data-rate capabilities (up to 3Mbps), a flexible logic voltage interface, and enhanced electrostatic discharge (ESD) protection. All receiver inputs and transmitter outputs are protected to ±15kV IEC 61000–4-2 Air Gap Discharge, ±8kV IEC 61000-4-2 Contact Discharge, and ±15kV Human Body Model. The low-voltage logic interface operates with a voltage supply from +1.62V to VCC. The MAX13234E/MAX13235E have two receivers and two transmitters, while the MAX13236E/MAX13237E have a single receiver and transmitter. The transmitters have a low-dropout transmitter output stage, delivering true RS-232 performance from a +3V to +5.5V supply based on a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. All devices achieve a 1µA supply current using Maxim's AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the devices driving the transmitter and receiver inputs are inactive for more than 30s. The MAX13234E–MAX13237E are available in space-saving TQFN and TSSOP packages and operate over the -40°C to +85°C extended temperature range.

Key Features

Data Rate Up to 3Mbps for Faster Throughput
Saves Board Space
- Integrated Low-Voltage Logic for Easy Interface with ASICs and Microcontrollers
- Integrated ±15kV HBM ESD Protection
- Integrated Charge-Pump Circuitry Requiring Only Four External 0.1µF Capacitors for 3.3V Operation
+3V to +5.5V Supply Voltage
AutoShutdown Plus Achieves 1µA Shutdown Current Reduces Power Consumption
Available in 20-pin TSSOP, TQFN-EP, and 16-pin TQFN
-40°C to +85°C Operating Temperature

MAX13234E, MAX13235E, MAX13236E, MAX13237E: Functional Diagrams

Applications/Uses

Communication Systems
Data Cables
GPS Systems
Industrial Systems
Portable Devices
POS Systems
Telematics
Wireless Modules

DataSheet

title	Download file
MAX13234E-MAX13237E Data Sheet	MAX13234E-MAX13237E.pdf

Parametrics

Part Number	V_SUPPLY (V)	Tx	Rx	Data Rate (kbps)	I_CC (mA)	Internal Charge Pump	Ext. Caps	Cap. Value (µF)	ESD Protect. (±kV)	Rx Active in Shutdn	Package/Pins	Budgetary Price
Part Number	V_SUPPLY (V)	Tx	Rx	min	typ	Internal Charge Pump	Ext. Caps	nom	ESD Protect. (±kV)	Rx Active in Shutdn	Package/Pins	See Notes
MAX13234E	3 3.3 5	2	2	250	0.001	Yes	4	0.1	15	0	TQFN/20 TSSOP/20	$4.42 @1k
MAX13235E		2	2	3000							TQFN/20 TSSOP/20	$4.42 @1k
MAX13237E		1	1	3000							TQFN/16	$3.40 @1k

Design kits & evaluation modules

MAX13235EEVKIT

Quality and Environmental Data

MAX13235E.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX13235EETP	No Longer Available	MAX13235EETP+	TQFN,;20 pin;26 mm²	-40°C to +85°C	No
MAX13235EETP+	Active		TQFN,;20 pin;26 mm²	-40°C to +85°C	Lead Free
MAX13235EETP+T	Active		TQFN,;20 pin;26 mm²	-40°C to +85°C	Lead Free
MAX13235EETP-T	No Longer Available	MAX13235EETP+T	QFN;	-40°C to +85°C	See data sheet
MAX13235EEUP	No Longer Available	MAX13235EEUP+	TSSOP,;20 pin;45.2 mm²	-40°C to +85°C	No
MAX13235EEUP+	Active		TSSOP,;20 pin;45.2 mm²	-40°C to +85°C	Lead Free
MAX13235EEUP+T	Active		TSSOP,;20 pin;45.2 mm²	-40°C to +85°C	Lead Free
MAX13235EEUP-T	No Longer Available	MAX13235EEUP+T	TSSOP;	-40°C to +85°C	See data sheet
MAX13235EIUP+	No Longer Available		TSSOP,;20 pin;45.2 mm²	-20°C to +85°C	Lead Free
MAX13235EIUP+T	Active		TSSOP,;20 pin;45.2 mm²	-20°C to +85°C	Lead Free