ST3237EBPR(2005) Ver la hoja de datos (PDF) - STMicroelectronics

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ST3237EBPR
(Rev.:2005)

±15KV ESD-PROTECTED, 1µA, 3 TO 5.5V, 250KBPS, RS-232 TRANSCEIVER WITH STAND-BY

STMicroelectronics 

ST3237E

Table 10: Timing Characteristics

(C1 - C4 = 0.1µF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

Typical values are referred to TA = 25°C)

Symbol

Parameter

DR Maximum Data Rate

tPHLR

tPLHR

tPHLR

tPLHR

Propagation Delay Input to

Output

Propagation Delay Input to

Output

tT_SKEW Transmitter Skew

tR_SKEW Receiver Skew

tOER Receiver Output Enable

Time

tODR Receiver Output Disable

Time

SRT Transition Slew Rate

Test Conditions

RL = 3KΩ CL= 1000pF

one transmitter switching

VHSCI=GND

RL = 3KΩ CL= 250pF

one transmitter switching

VHSCI=VCC

VCC= 3 to 4.5V

RL = 3KΩ CL= 1000pF

one transmitter switching

VHSCI=VCC

VCC= 4.5 to 5.5V

RIN to ROUT

CL = 150pF

RL = 3kΩ

VHSCI=VCC

VHSCI=GND

|tPHL - tTLH|

|tPHL - tTLH|

|tPHL - tTLH|

Normal Operation

CL = 1000pF

VHSCI=GND

VHSCI=VCC

Normal Operation

TA = 25°C RL = 3 to 7KΩ VCC = 3.3V

measured from +3V to -3V or -3V to +3V

CL = 150pF to 1000pF

VHSCI=GND

CL = 150pF to 1000pF

VHSCI=VCC

CL = 150pF to 2500pF

VHSCI=GND

Min.

250

1000

1000

6

24

4

Typ.

0.15

400

1000

300

50

100

50

120

Max.

30

150

30

Unit

Kbps

Kbps

Kbps

µs

ns

ns

ns

ns

ns

ns

ns

V/µs

V/µs

V/µs

Transmitter Skew is measured at the transmitter zero cross points

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