参数资料
型号: SN74LVTZ244DBR
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: LVT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20
封装: GREEN, PLASTIC, SSOP-20
文件页数: 9/15页
文件大小: 451K
代理商: SN74LVTZ244DBR
SN54LVTZ244, SN74LVTZ244
3.3V ABT OCTAL BUFFERS/DRIVERS
WITH 3STATE OUTPUTS
SCBS302C SEPTEMBER 1993 REVISED JULY 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC
0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1)
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state or power-off state, VO (see Note 1)
0.5 V to 7 V
. . . .
Current into any output in the low state, IO: SN54LVTZ244
96 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74LVTZ244
128 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the high state, IO (see Note 2): SN54LVTZ244
48 mA
. . . . . . . . . . . . . . . . . . . . . . . .
SN74LVTZ244
64 mA
. . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0)
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0)
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum power dissipation at TA = 55°C (in still air) (see Note 3): DB package
0.6 W
. . . . . . . . . . . . . . . . . . .
DW package
1.6 W
. . . . . . . . . . . . . . . . . .
PW package
0.7 W
. . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54LVTZ244
55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74LVTZ244
40
°C to 85°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 maximum package power dissipation is calculated using a junction temperature of 150
°C and a board trace length of 750 mils.
For more information, refer to the Package Thermal Considerations application note in the 1994 ABT Advanced BiCMOS Technology
Data Book, literature number SCBD002B.
recommended operating conditions (see Note 4)
SN54LVTZ244
SN74LVTZ244
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
2.7
3.6
2.7
3.6
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
VI
Input voltage
5.5
V
IOH
High-level output current
24
32
mA
IOL
Low-level output current
48
64
mA
t/v
Input transition rise or fall rate
Outputs enabled
10
ns / V
t/VCC Power-up ramp rate
200
s/V
TA
Operating free-air temperature
55
125
40
85
°C
NOTE 4: Unused control inputs must be held high or low to prevent them from floating.
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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