
SN54ALVTH16827, SN74ALVTH16827
2.5-V/3.3-V 20-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES076E – JULY 1996 – REVISED DECEMBER 1998
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
When VCC is between 0 and 1.2 V, the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 1.2 V, OE should be tied to VCC through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN54ALVTH16827 is characterized for operation over the full military temperature range of –55
°C to
125
°C. The SN74ALVTH16827 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 10-bit section)
INPUTS
OUTPUT
OE1
OE2
A
Y
L
LH
H
XX
Z
X
H
X
Z
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 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-impedance
or power-off state, VO (see Note 1)
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state, VO (see Note 1)
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . .
Output current in the low state, IO: SN54ALVTH16827
96 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALVTH16827
128 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current in the high state, IO: SN54ALVTH16827
–48 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALVTH16827
–64 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0)
–50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0)
–50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Note 2): DGG package
81
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGV package
86
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 JESD 51.