ADM561_15 datasheet(3/12 Pages) AD

Part #	ADM561

Description	Notebook PC Serial Port Drivers/Receivers

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ADM560/ADM561

Rev. B | Page 3 of 12

SPECIFICATIONS

VCC = +3.3 V ± 10%, C1 to C4 = 1 μF, all specifications TMIN to TMAX, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

Output Voltage Swing

±5.0

±5.5

V

VCC = 3.3 V, three transmitter outputs loaded with 3 kΩ to ground

±4

±4.5

V

VCC = 3.0 V, all transmitter outputs, loaded with 3 kΩ to ground

VCC Power Supply Current

3.5

5

mA

No load, TIN = VCC

3.5

5

mA

No load, TIN = GND

Shutdown Supply Current

0.2

5

μA

SHDN = GND (ADM560), SHDN = VCC (ADM561), TIN = VCC

Input Logic Threshold Low, VINL

0.4

V

TIN, EN, EN , SHDN, SHDN

Input Logic Threshold High, VINH

2.4

V

TIN, EN, EN, SHDN, SHDN

Logic Pull-Up Current

3

20

μA

TIN = GND

EIA-232 Input Voltage Range

–25

+25

V

EIA-232 Input Threshold Low

0.4

0.8

V

EIA-232 Input Threshold High

1.1

2.4

V

EIA-232 Input Hysteresis

0.3

V

EIA-232 Input Resistance

3

5

7

kΩ

CMOS Output Voltage Low, VOL

0.4

V

IOUT = 1.6 mA

CMOS Output Voltage High, VOH

2.8

V

IOUT = −40 mA

CMOS Output Leakage Current

+0.05

±5

μA

EN = VCC, EN = GND, 0 V ≤ ROUT ≤ VCC

Output Enable Time

100

ns

Output Disable Time

50

ns

Receiver Propagation Delay

TPHL

0.1

1

μs

TPLH

0.5

2

μs

Transition Region Slew Rate

4.5

V/μs

RL = 3 kΩ, CL = 2500 pF measured from +3 V to −3 V or

−3 V to +3 V

Transmitter Output Resistance

300

Ω

VCC = V+ = V− = 0 V, VOUT = ±2 V

RS-232 Output Short-Circuit Current

±10

mA

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