SPECIFICATIONS (continued)
TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX. UNITS CONDITIONS
SP1485E RECEIVER
DC Characteristics
Differential Input Threshold
Differential Input Threshold
(SP1485EMN ONLY)
Input Hysteresis
Output Voltage High
Output Voltage Low
Three-State (High Impedance)
Output Current
Input Resistance
Input Current (A, B); VIN = 12V
Input Current (A, B); VIN = -7V
Short-Circuit Current
-0.2
-0.4
+0.2 Volts
+0.4 Volts
-7V ≤ VCM ≤ +12V
-7V ≤ VCM ≤ +12V
20
15
mV
Volts
VCM = 0V
3.5
I = -4mA, VID = +200mV
O
0.4
Volts
IO = +4mA, VID = -200mV
±1
µA
kΩ
0.4V ≤ VO ≤ 2.4V; RE = 5V
-7V ≤ VCM ≤ +12V
DE = 0V, VCC = 0V or 5.25V, VIN = 12V
DE = 0V, VCC = 0V or 5.25V, VIN = -7V
0V ≤ VO ≤ VCC
12
7
+1.0 mA
-0.8
95
mA
mA
SP1485E RECEIVER
AC Characteristics
Maximum Data Rate
Receiver Input to Output
20
15
Mbps
ns
RE = 0V, DE = 0V
tPLH; RDIFF = 54Ω,
CL1 = CL2 = 100pF; Figures 3 & 7
tPHL; RDIFF = 54Ω, CLI = CL2 = 100pF
RDIFF = 54Ω; CL1 = CL2 = 100pF;
Figures 3 & 7
40
5
50
10
70
15
ns
ns
Diff. Receiver Skew ItPLH-tPHL
I
Receiver Enable to
Output Low
45
ns
CRL = 15pF; Figures 2 & 8; S1 closed
Receiver Enable to
Output High
Receiver Disable from Low
Receiver Disable from High
45
45
45
70
70
70
ns
ns
ns
CRL = 15pF; Figures 2 & 8; S2 closed
CRL = 15pF; Figures 2 & 8; S1 closed
CRL = 15pF; Figures 2 & 8; S2 closed
POWER REQUIREMENTS
Supply Voltage
Supply Current
SP1485E
+4.75
+5.25 Volts
No Load
900
600
µA
µA
RE, DI = 0V or VCC; DE = VCC
RE = 0V, DI = 0V or 5V; DE = 0V
ENVIRONMENTAL
AND MECHANICAL
Operating Temperature
Commercial (_C_)
Industrial (_E_)
(_M_)
0
+70
+85
+125 °C
+150 °C
°C
°C
-40
-40
-65
Storage Temperature
Package
Plastic DIP (_P)
NSOIC (_N)
Rev:C Date: 02/26/04
SP1485E Low Power Half-Duplex RS485 Transceivers
© Copyright 2004 Sipex Corporation
3
SIPEX [ SIPEX CORPORATION ]
