ADM488/ADM489

Rev. D | Page 3 of 16

SPECIFICATIONS

VCC = 5 V ± 10%. All specifications TMIN to TMAX, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

DRIVER

Differential Output Voltage, VOD

5.0

V

R = ∞, see Figure 6

2.0

5.0

V

VCC = 5 V, R = 50 Ω (RS-422), see Figure 6

1.5

5.0

V

R = 27 Ω (RS-485), see Figure 6

1.5

5.0

V

VTST = –7 V to +12 V, see Figure 7, VCC = 5 V ± 5%

Δ|VOD| for Complementary Output States

0.2

V

R = 27 Ω or 50 Ω, see Figure 6

Common-Mode Output Voltage, VOC

3

V

R = 27 Ω or 50 Ω, see Figure 6

Δ|VOC| for Complementary Output States

0.2

V

R = 27 Ω or 50 Ω

Output Short-Circuit Current (VOUT = High)

250

mA

−7 V ≤ VO ≤ +12 V

Output Short-Circuit Current (VOUT = Low)

250

mA

−7 V ≤ VO ≤ +12 V

CMOS Input Logic Threshold Low, VINL

1.4

0.8

V

CMOS Input Logic Threshold High, VINH

2.0

1.4

V

Logic Input Current (DE, DI)

±1.0

μA

RECEIVER

Differential Input Threshold Voltage, VTH

−0.2

+0.2

V

−7 V ≤ VCM ≤ +12 V

Input Voltage Hysteresis, Δ VTH

70

mV

VCM = 0 V

Input Resistance

12

kΩ

−7 V ≤ VCM ≤ +12 V

Input Current (A, B)

1

mA

VIN = 12 V

−0.8

mA

VIN = –7 V

Logic Enable Input Current (RE)

±1

μA

CMOS Output Voltage Low, VOL

0.4

V

IOUT = +4.0 mA

CMOS Output Voltage High, VOH

4.0

V

IOUT = −4.0 mA

Short-Circuit Output Current

7

85

mA

VOUT = GND or VCC

Three-State Output Leakage Current

±1.0

μA

0.4 V ≤ VOUT ≤ +2.4 V

POWER SUPPLY CURRENT

Outputs unloaded, receivers enabled

ICC

30

60

μA

DE = 0 V (disabled)

37

74

μA

DE = 5 V (enabled)