Datasheet
SN54AHCT16244, SN74AHCT16244
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS334I – MARCH 1996 – REVISED JANUARY 2000
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54AHCT16244 SN74AHCT16244
UNIT
MIN MAX MIN MAX
UNIT
V
CC
Supply voltage 4.5 5.5 4.5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
V
I
Input voltage 0 5.5 0 5.5 V
V
O
Output voltage 0 V
CC
0 V
CC
V
I
OH
High-level output current –8 –8 mA
I
OL
Low-level output current 8 8 mA
∆t/∆v Input transition rise or fall rate 20 20 ns/V
T
A
Operating free-air temperature –55 125 –40 85 °C
NOTE 3: All unused inputs of the device must be held at V
CC
or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
T
A
= 25°C SN54AHCT16244 SN74AHCT16244
UNIT
PARAMETER
TEST
CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
V
OH
I
OH
= –50 A
45V
4.4 4.5 4.4 4.4
V
V
OH
I
OH
= –8 mA
4
.
5
V
3.94 3.8 3.8
V
V
OL
I
OL
= 50 A
45V
0.1 0.1 0.1
V
V
OL
I
OL
= 8 mA
4
.
5
V
0.36 0.44 0.44
V
I
I
V
I
= V
CC
or GND 0 V to 5.5 V ±0.1 ±1* ±1 A
I
OZ
V
O
= V
CC
or GND 5.5 V ±0.25 ±2.5 ±2.5 A
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 4 40 40 A
∆I
CC
†
One input at 3.4 V,
Other inputs at V
CC
or GND
5.5 V 1.35 1.5 1.5 mA
C
i
V
I
= V
CC
or GND 5 V 2.5 10 10 pF
C
o
V
O
= V
CC
or GND 5 V 3 pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at V
CC
= 0 V.
†
This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or V
CC
.
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.