54AC16244
16-BIT BUS BUFFER
WITH 3-STATE OUTPUTS (NON INVERTED)
I
I
I
I
I
I
I
I
I
I
I
I
I
I
HIGH SPEED:
t
PD
= 4.5 ns (TYP.) at V
CC
= 5V
LOW POWER DISSIPATION:
I
CC
= 8
µA
(MAX.) at T
A
= 25°C
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28% V
CC
(MIN.)
POWER DOWN PROTECTION ON INPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24 mA (MIN)
BALANCED PROPAGATION DELAYS:
t
PLH
≅
t
PHL
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
54 SERIES 16244
IMPROVED LATCH-UP IMMUNITY
CONTROLLED RISE AND FALL TIMES
SPACE GRADE-1: DSCC QML-V/Q
QUALIFIED
300 krad mil.1019.6 (RHA QUAL)
CONDITION - A
NO SEL, NO SEU UNDER 93 HeV/cm
2
/mg
LET HEAVY IONS IRRADIATION
PRESENT DATASHEET IS FULLY
COMPLIANT WITH DSCC SMD 5962-04210
TSSOP
Figure 1: Pin Connection
DESCRIPTION
The 54AC16244 is an advanced high-speed
CMOS 16-BIT BUS BUFFER (3-STATE)
fabricated with sub-micron silicon gate and
double-layer metal wiring C
2
MOS technology.
Any nG output control governs four BUS
BUFFERS. Output Enable inputs (nG) tied
together give full 16 bit operation.
When nG is LOW, the outputs are enabled. When
nG is HIGH, the output are in high impedance
state.
The device is designed to be used with 3-state
memory address drivers, etc.
January 2005
Rev. 1
1/10
54AC16244
Table 1: Order Codes
FLYING MODEL
PACKAGE
FPC-48
FPC-48
FPC-48
FPC-48
RADIATION
NO
NO
300Krad
300Krad
TERMINALS
QML-V
GOLD
SOLDER
GOLD
SOLDER
54AC16244K01V
54AC16244K02V
RHFAC16244K01V
RHFAC16244K02V
QML-Q
54AC16244K01Q
54AC16244K02Q
RHFAC16244K01Q
RHFAC16244K02Q
54AC16244K1
RHFAC16244K1
RHFAC16244K2 (*)
ENGINER MODEL
(*) EM with 48 hours Burn-In
Table 2: Pin Description
PIN N°
1
2, 3, 5, 6
8, 9, 11, 12
13, 14, 16, 17
19, 20, 22, 23
24
25
30, 29, 27, 26
36, 35, 33, 32
41, 40, 38, 37
47, 46, 44, 43
48
4, 10, 15, 21, 28, 34, 39, 45
7, 18, 31, 42
SYMBOL
1G
1Y1 to 1Y4
2Y1 to 2Y4
3Y1 to 3Y4
4Y1 to 4Y4
4G
3G
4A1 to 4A4
3A1 to 3A4
2A1 to 2A4
1A1 to 1A4
2G
GND
V
CC
NAME AND FUNCTION
Output Enable Input
Data Outputs
Data Outputs
Data Outputs
Data Outputs
Output Enable Input
Output Enable Input
Data Outputs
Data Outputs
Data Outputs
Data Outputs
Output Enable Input
Ground (0V)
Positive Supply Voltage
Table 3: Truth Table
INPUTS
G
L
L
H
X : Don’t Care
Z : High Impedance
OUTPUT
An
L
H
X
Yn
L
H
Z
2/10
54AC16244
Table 4: Absolute Maximum Ratings
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
T
stg
T
L
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
Storage Temperature
Lead Temperature (10 sec)
Parameter
Value
-0.5 to +7.0
-0.5 to +7.0
-0.5 to V
CC
+ 0.5
±
20
±
50
±
50
±
400
-65 to +150
260
Unit
V
V
V
mA
mA
mA
mA
°C
°C
I
CC
or I
GND
DC V
CC
or Ground Current
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
Table 5: Recommended Operating Conditions
Symbol
V
CC
V
I
V
O
T
op
dt/dv
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature
Input Rise and Fall Time (note 1) V
CC
= 3.0, 4.5 or 5.5
Parameter
Value
2 to 6
0 to V
CC
0 to V
CC
-55 to 125
0 to 8
Unit
V
V
V
°C
ns/V
1) V
IN
from 30% to 70% of V
CC
4/10
54AC16244
Table 6: DC Specifications
Test Condition
Symbol
Parameter
V
CC
(V)
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
V
OL
Low Level Output
Voltage
3.0
4.5
5.5
3.0
4.5
I
I
I
OZ
I
CC
Input Leakage Current
High Impedance Output
Leakage Current
Quiescent Supply
Current
5.5
5.5
5.5
V
O
= 0.1 V or
V
CC
-0.1V
V
O
= 0.1 V or
V
CC
-0.1V
I
O
=-50
µA
I
O
=-50
µA
I
O
=-50
µA
I
O
=-12 mA
I
O
=-24 mA
I
O
=-24 mA
I
O
=50
µA
I
O
=50
µA
I
O
=50
µA
I
O
=12 mA
I
O
=24 mA
V
I
= V
CC
or GND
V
I
= V
IH
or V
IL
V
O
= V
CC
or GND
V
I
= V
CC
or GND
2.9
4.4
5.4
2.56
3.86
4.86
0.002
0.001
0.001
0.1
0.1
0.1
0.36
0.36
±
0.1
±
0.5
8
T
A
= 25 °C
Min.
2.1
3.15
3.85
Typ.
1.5
2.25
2.75
1.5
2.25
2.75
2.99
4.49
5.49
Max.
Value
-55 to 125°C
Min.
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
2.46
3.76
4.76
0.1
0.1
0.1
0.44
0.44
±
1
±
5
160
µA
µA
µA
V
V
0.9
1.35
1.65
Max.
V
Unit
V
IH
High Level Input Voltage
V
IL
Low Level Input Voltage
V
V
OH
High Level Output
Voltage
Table 7: AC Electrical Characteristics
(C
L
= 50 pF, R
L
= 500
Ω,
Input t
r
= t
f
= 3n)
Test Condition
Symbol
Parameter
V
CC
(V)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
t
PLZ
t
PHZ
Output Disable Time
3.3
(*)
5.0
(**)
(*) Voltage range is 3.3V
±
0.3V
(**) Voltage range is 5.0V
±
0.5V
Value
T
A
= 25°C
Min.
Typ.
6.0
4.5
8.0
5.5
7.3
5.5
Max.
9.0
7.0
10.5
8.0
10.0
8.0
-55 to 125°C
Min.
Max.
11.5
9.0
14.0
10.0
11.5
14.0
ns
Unit
C
L
(pF)
t
PLH
t
PHL
t
PZL
t
PZH
Propagation Delay
Time A to Y
Output Enable Time
ns
ns
5/10
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