SP1481E Datasheet, PDF (3/10 Pages) Sipex Corporation – ±15kV Enhanced Low Power Half-Duplex RS-485 Transceivers

SPECIFICATIONS (continued)
T_MIN to T_MAXand V_CC = 5V ± 5% unless otherwise noted
PARAMETERS
MIN. TYP.
MAX. UNITS CONDITIONS
SP1481E/SP1485E RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
+0.2 Volts
Differential Input Threshold
-0.4
+0.4 Volts
(SP1485EMN ONLY)
Input Hysteresis
20
mV
Output Voltage High
3.5
Volts
Output Voltage Low
0.4 Volts
Three-State (High Impedance)
Output Current
±1
µA
Input Resistance
12
15
kΩ
Input Current (A, B); V_IN = 12V
Input Current (A, B); V_IN = -7V
Short-Circuit Current7
+1.0 mA
-0.8 mA
95
mA
SP1481E/SP1485E RECEIVER
AC Characteristics
Maximum Data Rate
20
Mbps
Receiver Input to Output
25
70
ns

Receiver Input to Output
25
70
ns

Diff. Receiver Skew It_PLH-t_PHLI
5
10
ns
Receiver Enable to
Output Low
45
Receiver Enable to
Output High
45
Receiver Disable from Low
45
Receiver Disable from High45
70
ns
70
ns
70
ns
70
ns
SP1481E
Shutdown Timing
Time to Shutdown
Driver Enable from Shutdown
to Output High
Driver Enable from Shutdown
to Output Low
Receiver Enable from
Shutdown to Output High
Receiver Enable from
Shutdown to Output Low
50
200
600 ns
40
100 ns
40
100 ns
300
1000 ns
300
1000 ns
POWER REQUIREMENTS
Supply Voltage
+4.75
+5.25 Volts
Supply Current
SP1481E/1485E
No Load
900
μA
600
μA
SP1481E
Shutdown Mode
10
μA
environmental and mechanical
Operating Temperature
Commercial (_C_)
0
Industrial (_E_)
-40
(_M_)
-40
Storage Temperature
-65
Package
NSOIC (_N)
+70 °C
+85 °C
+125 °C
+150 °C
‑7V ≤ V_CM ≤ +12V
‑7V ≤ V_CM ≤ +12V
V_CM = 0V
I_O = ‑4mA, V_ID = +200mV
I_O = +4mA,V_ID = ‑200mV
0.4V ≤ V_O ≤ 2.4V; RE = 5V
‑7V ≤ V_CM ≤ +12V
DE = 0V, V_CC = 0V or 5.25V, V_IN = 12V
DE = 0V, V_CC = 0V or 5.25V, V_IN = -7V
0V ≤ V_O ≤ V_CC
RE = 0V, DE = 0V
t_PLH; R_DIFF = 54Ω,
C_L1 = C_L2 = 100pF; Figures 3 & 7
t_PHL; R_DIFF = 54Ω,
C_L1 = C_L2 ⁼ 100pF; Figures 3 & 7
R_DIFF = 54Ω; C_L1 = C_L2 = 100pF;
Figures 3 & 7
C_RL = 15pF; Figures 2 & 8; S₁ closed
C_RL = 15pF; Figures 2 & 8; S₂ closed
C_RL = 15pF; Figures 2 & 8; S₁ closed
C_RL = 15pF; Figures 2 & 8; S₂ closed
RE = 5V, DE = 0V
C_L = 100pF; See Figures 4 & 6; S₂ closed
C_L = 100pF; See Figures 4 & 6; S₁ closed
C_L = 15pF; See Figures 2 & 8; S₂ closed
C_L = 15pF; See Figures 2 & 8; S₁ closed
RE, DI = 0V or V_CC; DE = V_CC
RE = 0V, DI = 0V or 5V; DE = 0V
DE = 0V, RE=V_CC
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP1481E-1485E_100_061609