Datasheet Linear Technology LT1342 — Ficha de datos

Fabricante	Linear Technology
Serie	LT1342

Transceptor RS232 de 5V con interfaz lógica de 3V

Hojas de datos

PDF, 228 Kb, Revisión: A, Archivo subido: nov 12, 2017

Extracto del documento

Precios

Embalaje

	LT1342CG#PBF	LT1342CG#TRPBF	LT1342CNW#PBF	LT1342CSW#PBF	LT1342CSW#TRPBF
N	1	2	3	4	5
Package	SSOP-28 Dibujo del esquema del paquete	SSOP-28 Dibujo del esquema del paquete	NW-28 Dibujo del esquema del paquete	SW-28 Dibujo del esquema del paquete	SW-28 Dibujo del esquema del paquete
Package Code	G	G	NW	SW	SW
Package Index	05-08-1640 (G28)	05-08-1640 (G28)	05-08-1520	05-08-1620 (SW28)	05-08-1620 (SW28)
Pin Count	28	28	28	28	28

Paramétricos

Parameters / Models	LT1342CG#PBF	LT1342CG#TRPBF	LT1342CNW#PBF	LT1342CSW#PBF	LT1342CSW#TRPBF
Driver Disable	no	no	no	no	no
Drivers	3	3	3	3	3
ESD, kV	10	10	10	10	10
Export Control	no	no	no	no	no
IEC61000-4-2 Support	yes	yes	yes	yes	yes
Max Data Rate, Mbps	0.25	0.25	0.25	0.25	0.25
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70
Power, mW	60	60	60	60	60
Protocols Supported	RS232	RS232	RS232	RS232	RS232
Receivers	5	5	5	5	5
Shutdown	yes	yes	yes	yes	yes
Supply Voltage Range	5V	5V	5V	5V	5V
Voltage Gen Components	6 x 0.1ВµF	6 x 0.1ВµF	6 x 0.1ВµF	6 x 0.1ВµF	6 x 0.1ВµF

Plan ecológico

	LT1342CG#PBF	LT1342CG#TRPBF	LT1342CNW#PBF	LT1342CSW#PBF	LT1342CSW#TRPBF
RoHS	Obediente	Obediente	Obediente	Obediente	Obediente

Notas de Diseño

Descargar
RS232 Interface Circuits for 3.3V Systems &mdash DN75
PDF, 105 Kb, Archivo publicado: oct 1, 1993
Extracto del documento
RS232 Interface Circuits for 3.3V Systems вЂ“ Design Note 75 Gary Maulding
The rapid, widespread use of 3.3V logic circuits complicates the selection of RS232 interface circuits. The
optimum choice of an interface circuit should be based
upon several application dependent factors:
1) Logic circuitry connected to interface chip port mouse. The LTВ®1342, LT1330, and LT1331 are all
good RS232 transceiver choices for systems with both
5V and 3V power. Typical performance waveforms for
the LT1342 operating with VCC = 5V and VL = 3.3V are
shown in Figure 2. 2) Power supply voltages available
RECEIVER
OUTPUT 3) Power consumption constraints
4) Serial interface environment
5) Mouse driving requirements
As Figure 1 illustrates, 5V interface circuits cannot be
used to directly connect to 3.3V CMOS logic circuits.
The receiver output level will forward bias the logic
circuitвЂ™s input protection diode, causing large current
п¬‚ow. In the worst case the CMOS logic circuit may
latch up. Resistor voltage dividers or level shift buffers may be used to prevent forward biasing the CMOS
input diode, but an RS232 transceiver designed for 3V
logic application prevents this problem without extra
components or power dissipation.
Many of todayвЂ™s systems have both 5V and 3V power …

Linea modelo

Serie: LT1342 (5)

LT1342CG#PBF LT1342CG#TRPBF LT1342CNW#PBF LT1342CSW#PBF LT1342CSW#TRPBF

Clasificación del fabricante

Interface > RS232/RS562 Transceivers

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