Datasheet

TL16C451, TL16C452
ASYNCHRONOUS COMMUNICATIONS ELEMENTS
SLLS053C – MAY 1989 – REVISED AUGUST 1999
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
(see Note 1 ) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range at any input, V
I
–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation 1100 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Case temperature for 10 seconds, T
C
260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to GND.
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, V
CC
4.75 5 5.25 V
High-level Input voltage, V
IH
2 V
CC
V
Low-level Input voltage, V
IL
–0.5 0.8 V
Operating free-air temperature, T
A
0 70 °C
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
I
OH
= –0.4 mA on DB0–DB7
V
OH
High level out
p
ut voltage
I
OH
= –2 mA to 4 mA on PD0–PD7
24
V
V
OH
High
-
le
v
el
o
u
tp
u
t
v
oltage
I
OH
= –0.2 mA on INIT, AFD, STB, and SLIN
2
.
4
V
I
OH
= –0.2 mA on all other outputs
I
OL
= 4 mA on DB0–DB7
I
OL
= 12 mA on PD0–PD7
V
OL
Low-level output voltage
I
OL
= 10 mA on INIT,
AFD, STB, and SLIN (see Note 2)
0.4 V
I
OL
= 2 mA on all other outputs
I
Ik
In
p
ut leakage current
V
CC
= 5.25 V, V
SS
= 0,
±10
µA
I
Ikg
Inp
u
t
leakage
c
u
rrent
CC
,
SS
,
V
I
= 0 to 5.25 V, All other terminals floating
±10
µ
A
I
oz
High-impedance output current
V
CC
= 5.25 V, V
SS
= 0,
V
O
= 0 to 5.25 V,
Chip selected and in write mode, or chip deselected
±20 µA
V
CC
= 5.25 V, V
SS
= 0,
SS S CS
I
CC
Supply current
SIN, DSR, RLSD, CTS, and RI at 2 V,
All other in
p
uts at 0 8 V XTAL1 at 4 MHz
10 mA
All
other
in uts
at
0
.
8
V
,
XTAL1
at
4
MHz
,
No load on outputs, Baud rate = 50 kbit/s
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
NOTE 2: INIT
, AFD, STB, and SLIN are open-collector output terminals that each have an internal pullup to V
CC
. This generates a maximum of
2 mA of internal I
OL
per terminal. In addition to this internal current, each terminal sinks at least 10 mA while maintaining the V
OL
specification of 0.4 V maximum.
system timing requirements over recommended ranges of supply voltage and operating free-air
temperature
PARAMETER FIGURE MIN MAX UNIT
t
cR
Cycle time, read (t
w7
+ t
d8
+ t
d9
) 175 ns