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Электронный компонент: 74ABT244DB

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Philips
Semiconductors
74ABT244
Octal buffer/line driver (3-State)
Product specification
Supersedes data of 1995 Sep 06
1998 Jan 16
INTEGRATED CIRCUITS
IC23 Data Handbook
Philips Semiconductors
Product specification
74ABT244
Octal buffer/line driver (3-State)
2
1998 Jan 16
8531444 18867
FEATURES
Octal bus interface
3-State buffers
Output capability: +64mA/32mA
Latch-up protection exceeds 500mA per Jedec Std 17
ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200 V per Machine Model
Power-up 3-State
Live insertion capacity
Inputs are disabled during 3-State mode
DESCRIPTION
The 74ABT244 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT244 device is an octal buffer that is ideal for driving bus
lines. The device features two Output Enables (1OE, 2OE), each
controlling four of the 3-State outputs.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
C; GND = 0V
TYPICAL
UNIT
t
PLH
t
PHL
Propagation delay
An to Yn
C
L
= 50pF; V
CC
= 5V
2.9
ns
C
IN
Input capacitance
V
I
= 0V or V
CC
4
pF
C
OUT
Output capacitance
Outputs disabled; V
O
= 0V or V
CC
7
pF
I
CCZ
Total supply current
Outputs disabled; V
CC
=5.5V
50
A
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
20-Pin Plastic DIP
40
C to +85
C
74ABT244 N
74ABT244 N
SOT146-1
20-Pin plastic SO
40
C to +85
C
74ABT244 D
74ABT244 D
SOT163-1
20-Pin Plastic SSOP Type II
40
C to +85
C
74ABT244 DB
74ABT244 DB
SOT339-1
20-Pin Plastic TSSOP Type I
40
C to +85
C
74ABT244 PW
74ABT244PW DH
SOT360-1
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
1Y3
GND
2A2
1Y2
2A1
1Y1
2A0
1Y0
2OE
VCC
2A3
SA00148
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
2, 4, 6, 8
1A0 1A3
Data inputs
11, 13, 15, 17
2A0 2A3
Data inputs
18, 16, 14, 12
1Y0 1Y3
Data outputs
9, 7, 5, 3
2Y0 2Y3
Data outputs
1, 19
1OE, 2OE
Output enables
10
GND
Ground (0V)
20
V
CC
Positive supply voltage
Philips Semiconductors
Product specification
74ABT244
Octal buffer/line driver (3-State)
1998 Jan 16
3
LOGIC SYMBOL
1OE
1
1A0
2
1A1
4
1A2
6
1A3
8
2OE
19
2A3
11
2A2
18
13
2A1
15
16
2A0
17
14
12
1Y0
1Y1
1Y2
1Y3
2Y3
2Y2
2Y1
2Y0
9
7
5
3
SA00149
LOGIC SYMBOL (IEEE/IEC)
1
2
18
4
16
6
14
8
12
19
11
9
13
7
15
5
17
3
EN
EN
SA00150
FUNCTION TABLE
INPUTS
OUTPUTS
1OE
1An
2OE
2An
1Yn
2Yn
L
L
L
L
L
L
L
H
L
H
H
H
H
X
H
X
Z
Z
H = High voltage level
L
= Low voltage level
X = Don't care
Z = High impedance "off " state
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
V
CC
DC supply voltage
0.5 to +7.0
V
I
IK
DC input diode current
V
I
< 0
18
mA
V
I
DC input voltage
3
1.2 to +7.0
V
I
OK
DC output diode current
V
O
< 0
50
mA
V
OUT
DC output voltage
3
output in Off or High state
0.5 to +5.5
V
I
OUT
DC output current
output in Low state
128
mA
T
stg
Storage temperature range
65 to 150
C
NOTES:
1. Stresses beyond those listed 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.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150
C.
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Philips Semiconductors
Product specification
74ABT244
Octal buffer/line driver (3-State)
1998 Jan 16
4
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
SYMBOL
PARAMETER
Min
Max
UNIT
V
CC
DC supply voltage
4.5
5.5
V
V
I
Input voltage
0
V
CC
V
V
IH
High-level input voltage
2.0
V
V
IL
Low-level Input voltage
0.8
V
I
OH
High-level output current
32
mA
I
OL
Low-level output current
64
mA
t/
v
Input transition rise or fall rate
0
5
ns/V
T
amb
Operating free-air temperature range
40
+85
C
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25
C
T
amb
= 40
C
to +85
C
UNIT
Min
Typ
Max
Min
Max
V
IK
Input clamp voltage
V
CC
= 4.5V; I
IK
= 18mA
0.9
1.2
1.2
V
V
CC
= 4.5V; I
OH
= 3mA; V
I
= V
IL
or V
IH
2.5
2.9
2.5
V
V
OH
High-level output voltage
V
CC
= 5.0V; I
OH
= 3mA; V
I
= V
IL
or V
IH
3.0
3.4
3.0
V
V
CC
= 4.5V; I
OH
= 32mA; V
I
= V
IL
or V
IH
2.0
2.4
2.0
V
V
OL
Low-level output voltage
V
CC
= 4.5V; I
OL
= 64mA; V
I
= V
IL
or V
IH
0.42
0.55
0.55
V
I
I
Input leakage current
V
CC
= 5.5V; V
I
= GND or 5.5V
0.01
1.0
1.0
A
I
OFF
Power-off leakage current
V
CC
= 0.0V; V
O
or V
I
4.5V
5.0
100
100
A
I
PU/PD
Power-up/down 3-State
output current
3
V
CC
= 2.0V; V
O
= 0.5V; V
I
= GND or V
CC
;
V
OE
= Don't care
5.0
50
50
A
I
OZH
3-State output High current
V
CC
= 5.5V; V
O
= 2.7V; V
I
= V
IL
or V
IH
5.0
50
50
A
I
OZL
3-State output Low current
V
CC
= 5.5V; V
O
= 0.5V; V
I
= V
IL
or V
IH
5.0
50
50
A
I
CEX
Output HIgh leakage current
V
CC
= 5.5V; V
O
= 5.5V; V
I
= GND or V
CC
5.0
50
50
A
I
O
Short-circuit output current
1
V
CC
= 5.5V; V
O
= 2.5V
40
100
180
40
180
mA
I
CCH
V
CC
= 5.5V; Outputs High, V
I
= GND or V
CC
50
250
250
A
I
CCL
Quiescent supply current
V
CC
= 5.5V; Outputs Low, V
I
= GND or V
CC
24
30
30
mA
I
CCZ
Quiescent su
ly current
V
CC
= 5.5V; Outputs 3-State;
V
I
= GND or V
CC
50
250
250
A
Outputs enabled, one data input at 3.4V,
other inputs at V
CC
or GND; V
CC
= 5.5V
0.5
1.5
1.5
mA
I
CC
Additional supply current per
input pin
2
Outputs 3-State, one data input at 3.4V, other
inputs at V
CC
or GND; V
CC
= 5.5V
50
250
250
A
Outputs 3-State, one enable input at 3.4V,
other inputs at V
CC
or GND; V
CC
= 5.5V
0.5
1.5
1.5
mA
NOTES:
1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
2. This is the increase in supply current for each input at 3.4V.
3. This parameter is valid for any V
CC
between 0V and 2.1V with a transition time of up to 10msec. For V
CC
= 2.1V to V
CC
= 5V
"
10%, a
transition time of up to 100
sec is permitted.
Philips Semiconductors
Product specification
74ABT244
Octal buffer/line driver (3-State)
1998 Jan 16
5
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF, R
L
= 500
74ABT244
SYMBOL
PARAMETER
WAVEFORM
T
amb
= +25
C
V
CC
= +5.0V
T
amb
= 40
C to +85
C
V
CC
= +5.0V
0.5V
UNIT
Min
Typ
Max
Min
Max
t
PLH
t
PHL
Propagation delay
An to Yn
1
1.0
1.0
2.6
2.9
4.1
4.2
1.0
1.0
4.6
4.6
ns
t
PZH
t
PZL
Output enable time
to High and Low level
2
1.1
2.1
3.1
4.1
4.6
5.6
1.1
2.1
5.1
6.1
ns
t
PHZ
t
PLZ
Output disable time
from High and Low level
2
2.1
1.7
4.1
2.7
5.6
5.2
2.1
1.7
6.6
5.7
ns
AC WAVEFORMS
V
M
= 1.5V, V
IN
= GND to 3.0V
INPUT
1.5V
OUTPUT
t
PLH
t
PHL
SA00028
1.5V
1.5V
1.5V
3 V
0 V
V
OH
V
OL
Waveform 1. Waveforms Showing the Input (An) to Output (Yn)
Propagation Delays
Output Control
(Low-level
enabling
1.5 V
t
PZH
t
PHZ
V
OH
V
OL
t
PZL
t
PLZ
3.5V
0V
V
OL
+ 0.3V
V
OH
0.3V
SA00029
1.5 V
1.5 V
1.5 V
0V
3V
Output
Waveform 1
S1 at 7 V
(see Note)
Note:
Waveform 1 is for an output with internal conditions such that
the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that
the output is high except when disabled by the output control.
Output
Waveform 2
S1 at Open
(see Note)
Waveform 2. Waveforms Showing the 3-State Output Enable
and Disable Times
TEST CIRCUIT AND WAVEFORMS
C
L
= 50 pF
500
Load Circuit
DEFINITIONS
C
L
=
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
TEST
S1
t
pd
open
t
PLZ
/t
PZL
7 V
t
PHZ
/t
PZH
open
SA00012
500
From Output
Under Test
S1
7 V
Open
GND