SN54ABT16827, SN74ABT16827
20-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS220C – JUNE 1992 – REVISED MAY 1997
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic diagram (positive logic)
1Y1
2
1
55
1OE1
1OE2
56
2Y1
15
28
42
29
2OE1
2OE2
To Nine Other Channels
1A1
2A1
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1)
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high or power-off state, VO
–0.5 V to 5.5 V
. . . . . . . . . . . . . . . . . . .
Current into any output in the low state, IO: SN54ABT16827
96 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ABT16827
128 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0)
–18 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0)
–50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Note 2): DL package
74
°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. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51.
recommended operating conditions (see Note 3)
SN54ABT16827
SN74ABT16827
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
4.5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
VI
Input voltage
0
VCC
0
VCC
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
Control pins
4
ns/V
t/v
Input transition rise or fall rate
Data pins
10
ns/V
t/VCC
Power-up ramp rate
200
s/V
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 3: Unused 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.