com90c66 Standard Microsystems Corp., com90c66 Datasheet - Page 46

• Manufacturer Part Number: com90c66
• Description: Arcnet Controller/transceiver With At Interface And On-chip Ram Corporation
• Manufacturer: Standard Microsystems Corp.

OPERATIONAL DESCRIPTION
MAXIMUM GUARANTEED RATINGS *
Operating Temperature Range ......................................................................................... 0
Storage Temperature Range ....................................................................................... -55
Lead Temperature (soldering, 10 seconds) ............................................................................... +325
Positive Voltage on any pin, with respect to ground ................................................................ V
Negative Voltage on any pin, with respect to ground .................................................................... -0.3V
Maximum V
*Stresses above those listed may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other condition above those indicated in the
operational sections of this specification is not implied.
Note: When powering this device from laboratory or system power supplies, it is important that the
Absolute Maximum Ratings not be exceeded or device failure can result. Some power supplies exhibit
voltage spikes or "glitches" on their outputs when the AC power is switched on or off. In addition,
voltage transients on the AC power line may appear on the DC output. If this possibility exists it is
suggested that a clamp circuit be used.
DC ELECTRICAL CHARACTERISTICS (T
Low Input Voltage 1
High Input Voltage 1
nMEMnR,
Low Input Voltage 2
High Input Voltage 2
(All inputs except
XTAL1, RESET, AEN,
nIOR, nIOW, nMEMR,
nMEMW)
(All inputs except
XTAL1, RESET, AEN,
nIOR,
nMEMW)
(XTAL1)
(XTAL1)
PARAMETER
CC
................................................................................................................................ +7V
nIOW,
SYMBOL
V
V
V
V
IH1
IH2
IL1
IL2
MIN.
2.0
4.0
A
= 0
o
C to 70
46
TYP.
o
C, V
MAX.
0.8
1.0
CC
= 5.0V ± 5%)
UNITS
V
V
V
V
TTL Levels
TTL Levels
TTL Clock Input
COMMENTS
o
C to +150
o
C to +70
CC
+0.3V
o
o
o
C
C
C