SP486E Datasheet, PDF (4/11 Pages) Sipex Corporation – Enhanced Quad RS-485/RS-422 Line Drivers

PINOUT — SP487E
DI₁ 1
1
DO₁A 2
DO₁B 3
EN₁/EN₂ 4
DO₂B 5
DO₂A 6
2
DI₂ 7
GND 8
SP487E ^{16 V}CC
15 DI₄
4
14 DO₄A
13 DO₄B
12 EN₃/EN₄
11 DO₃B
10 DO₃A
3
9 DI₃
SP487E PINOUT
Pin 1 — DI — Driver 1 Input — If Driver 1
1
output is enabled, logic 0 on DI forces driver
1
output DO₁A low and DO₁B high. A logic 1 on
DI₁ with Driver 1 output enabled forces driver
DO₁A high and DO₁B low.
Pin 2 — DO₁A — Driver 1 output A.
Pin 3 — DO₁B — Driver 1 output B.
Pin 4 — EN₁/EN₂ — Driver 1 and 2 Output
Enable. Please refer to SP487E Truth Table (2).
Pin 5 — DO₂B — Driver 2 output B.
Pin 6 — DO A — Driver 2 output A.
2
Pin 7 — DI₂ — Driver 2 Input — If Driver 2
output is enabled, logic 0 on DI₂ forces driver
output DO₂A low and DO₂B high. A logic 1 on
DI₂ with Driver 2 output enabled forces driver
DO₂A high and DO₂B low.
Pin 8 — GND — Digital Ground.
Pin 9 — DI₃ — Driver 3 Input — If Driver 3
output is enabled, logic 0 on DI forces driver
3
output DO A low and DO B high. A logic 1 on
3
3
DI₃ with Driver 3 output enabled forces driver
DO₃A high and DO₃B low.
Pin 10 — DO A — Driver 3 output A.
3
INPUT
DI
H
L
H
L
X
ENABLES
EN
EN
H
X
H
X
X
L
X
L
L
H
Table 1. SP486E Truth Table
OUTPUTS
OUTA OUTB
H
L
L
H
H
L
L
H
Hi–Z
Hi–Z
Pin 11 — DO₃B — Driver 3 output B.
Pin 12 — EN₃/EN₄ — Driver 3 and 4 Output
Enable. Please refer to SP487E Truth Table (2).
Pin 13 — DO₄B — Driver 4 output B.
Pin 14 — DO₄A — Driver 4 output A.
Pin 15 — DI — Driver 4 Input — If Driver 4
4
output is enabled, logic 0 on DI₄ forces driver
output DO₄A low and DO₄B high. A logic 1 on
DI with Driver 3 output enabled forces driver
4
DO A high and DO B low.
4
4
Pin 16 — Supply Voltage V_CC — 4.75V ≤ V_CC ≤
5.25V.
FEATURES…
The SP486E and SP487E are low–power quad
differential line drivers meeting RS-485 and
RS-422 standards. The SP486E features active
high and active low common driver enable
controls; the SP487E provides independent,
active high driver enable controls for each pair
of drivers. The driver outputs are short–circuit
limited to 200mA. Data rates up to 10Mbps are
supported. Both are available in 16–pin plastic
DIP and SOIC packages.
INPUT
ENABLES
OUTPUTS
DI EN1/EN2 or EN3/EN4 OUTA OUTB
H
H
H
L
L
H
L
H
X
L
Hi–Z Hi–Z
Table 2. SP487E Truth Table
SP486E/487EDS/06
SP486E/487E Enhanced Quad RS-485/RS-422 Line Drivers
4
© Copyright 2000 Sipex Corporation