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参数资料
| 型号： | SN74GTLPH16912DL |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | GTL/TVC SERIES, 18-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO56 |
| 封装： | SSOP-56 |
| 文件页数： | 5/10页 |
| 文件大小： | 143K |
| 代理商： | SN74GTLPH16912DL |
SN74GTLPH16912
18-BIT LVTTL-TO-GTL+ UNIVERSAL BUS TRANSCEIVER
SCES288 – OCTOBER 1999
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC and BIAS VCC
–0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1): A-port and control inputs
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . .
B port and VREF
–0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high-impedance or power-off state, VO
(see Note 1): A port
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port
–0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state, IO: A port
48 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port
100 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any A-port output in the high state, IO (see Note 2)
48 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through each VCC or GND
±100 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0)
–50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0)
–50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Note 3): DGG package
64
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGV package
48
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DL package
56
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°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.
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.
recommended operating conditions (see Notes 4 through 6)
MIN
NOM
MAX
UNIT
VCC,
BIAS VCC
Supply voltage
3.15
3.3
3.45
V
VTT
Termination voltage
GTL
1.14
1.2
1.26
V
VTT
Termination voltage
GTL+
1.35
1.5
1.65
V
VREF
Supply voltage
GTL
0.74
0.8
0.87
V
VREF
Supply voltage
GTL+
0.87
1
1.1
V
VI
Input voltage
B port
VTT
V
VI
Input voltage
Except B port
VCC
V
VIH
High level input voltage
B port
VREF+0.05
V
VIH
High-level input voltage
Except B port
2
V
VIL
Low level input voltage
B port
VREF–0.05
V
VIL
Low-level input voltage
Except B port
0.8
V
IIK
Input clamp current
–18
mA
IOH
High-level output current
A port
–24
mA
IOL
Low level output current
A port
24
mA
IOL
Low-level output current
B port
50
mA
TA
Operating free-air temperature
–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, BIAS VCC = 3.3 V second, and VCC = 3.3 V, I/O, control inputs, VTT and VREF (any order)
last. However, if the B-port I/O precharge is not required, the acceptable connection sequence is GND first and VCC = 3.3 V,
BIAS VCC = 3.3 V, I/O, control inputs, VTT and VREF (any order) last. When VCC is connected, the BIAS VCC circuitry is disabled.
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
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