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| 型號： | SN54GTL16622A |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 18-BIT LVTTL-TO-GTL/GTL BUS TRANSCEIVERS |
| 中文描述： | 18位LVTTL-TO-GTL/GTL總線收發(fā)器 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 163K |
| 代理商： | SN54GTL16622A |
SN54GTL16622A, SN74GTL16622A
18-BIT LVTTL-TO-GTL/GTL+ BUS TRANSCEIVERS
SCBS673D – AUGUST 1996 – REVISED DECEMBER 1999
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
Input voltage range, V
I
(see Note 1): A-port and control inputs
–0.5 V to 4.6 V
–0.5 V to 6.5 V
–0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port and V
REF
Voltage range applied to any output in the high or power-off state, V
O
(see Note 1): A port
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state, I
O
: A port
B port
Current into any A-port output in the high state, I
O
(see Note 2)
Continuous current through each V
CC
or GND
Input clamp current, I
IK
(V
I
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θ
JA
(see Note 3)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
NOTES:
1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. This current flows only when the output is in the high state and VO > VCC.
3. The package thermal impedance is calculated in accordance with JESD 51.
–0.5 V to 6.5 V
–0.5 V to 4.6 V
48 mA
100 mA
48 mA
±
100 mA
–50 mA
–50 mA
55
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65
°
C to 150
°
C
recommended operating conditions (see Notes 4 through 6)
SN54GTL16622A
NOM
SN74GTL16622A
NOM
UNIT
MIN
MAX
MIN
MAX
VCC
Supply voltage
3.15
3.3
3.45
3.15
3.3
3.45
V
VTT
Termination
voltage
GTL
1.14
1.2
1.26
1.14
1.2
1.26
V
GTL+
1.35
1.5
1.65
1.35
1.5
1.65
VREF
Supply voltage
GTL
0.74
0.8
0.87
0.74
0.8
0.87
V
GTL+
0.87
1
1.1
0.87
1
1.1
VI
Input voltage
B port
VTT
5.5
VTT
5.5
V
Except B port
VIH
High-level
input voltage
B port
VREF+50 mV
VREF+50 mV
V
Except B port
2
2
VIL
Low-level
input voltage
B port
VREF–50 mV
0.8
VREF–50 mV
0.8
V
Except B port
IIK
Input clamp current
–18
–18
mA
IOH
High-level
output current
A port
–24
–24
mA
IOL
Low-level
output current
A port
24
24
mA
B port
50
50
TA
Operating free-air temperature
–55
125
–40
85
°
C
NOTES:
4. All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs literature number SCBA004.
5. Normal connection sequence is GND first and VCC = 3.3 V, I/O, control inputs, VTT and VREF (any order) last.
6. VTT and RTT can be adjusted to accommodate backplane impedances as long as they do not exceed the DC absolute IOL ratings.
Similarly, VREF can be adjusted to optimize noise margins, but normally is 2/3 VTT.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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