Datasheet

SN75976A, SN55976A
9-CHANNEL DIFFERENTIAL TRANSCEIVER
SLLS218B – MAY 1995 – REVISED MAY 1997
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description (continued)
In addition to speed improvements, the ’976A can withstand electrostatic discharges exceeding 12 kV using
the human-body model, and 600 V using the machine model of MIL-PRF-38535, Method 3015.7 on the RS-485
I/O terminals. This is six times the industry standard and provides protection from the noise that can be coupled
into external cables. The other terminals of the device can withstand discharges exceeding 4 kV and 400 V
respectively.
Each of the nine channels of the ’976A typically meet or exceed the requirements of EIA RS-485 (1983) and
ISO 8482-1987/TIA TR30.2 referenced by American National Standard of Information (ANSI) Systems,
X3.131-1994 (SCSI-2) standard, X2.277-1996 (Fast-20 Parallel Interface), and the Intelligent Peripheral
Interface Physical Layer-ANSI X3.129-1986 standard.
The SN75976A is characterized for operation over an ambient air temperature range of 0°C to 70°C. The
SN55976A is characterized for operation over an ambient air temperature range of –55°C to 125°C.
AVAILABLE OPTIONS
T
A
Skew Limit
(ns)
PACKAGE
†
T
A
Driver Receiver
TSSOP
(DGG)
SSOP
(DL)
CERAMIC FLAT PACK
(WD)
0
°
Cto70
°
C
8 9
SN75976A1DGG
SN75976A1DGGR
SN75976A1DL
SN75976A1DLR
—
0°C
to
70°C
4 5
SN75976A2DGG
SN75976A2DGGR
SN75976A2DL
SN75976A2DLR
—
55
°
Cto125
°
C
8 9 — — SN55976A1WD
–
55°C
to
125°C
4 5 — — SN55976A2WD
†
The R suffix indicates taped and reeled packages.