Philips Semiconductors
Product specification
18-bit buffer/line driver; non-inverting (3-State)
74ABT16825A
74ABTH16825A
FEATURES
•
Multiple V
CC
and GND pins minimize switching noise
•
Live insertion/extraction permitted
•
3-State output buffers
•
Power-up 3-State
•
74ABTH16825A incorporates bus-hold data inputs which
eliminate the need for external pull-up resistors to hold unused
inputs
DESCRIPTION
The74ABT16825A high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The74ABT16825A 18-bit buffers provide high performance bus
interface buffering for wide data/address paths or buses carrying
parity. They have NOR Output Enables (nOE1, nOE2) for maximum
control flexibility.
Two options are available, 74ABT16825A which does not have the
bus-hold feature and 74ABTH16825A which incorporates the
bus-hold feature.
•
Output capability: +64mA/–32mA
•
Latch-up protection exceeds 500mA per Jedec Std 17
•
ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model
•
Bus-hold data inputs eliminate the need for external pull-up
resistors to hold unused inputs
QUICK REFERENCE DATA
SYMBOL
t
PLH
t
PHL
C
IN
C
OUT
I
CCZ
I
CCL
PARAMETER
Propagation delay
nAx to nYx
Input capacitance
Output capacitance
Quiescent su ly current
supply
CONDITIONS
T
amb
= 25°C; GND = 0V
C
L
= 50pF; V
CC
= 5V
V
I
= 0V or V
CC
V
O
= 0V or V
CC
; 3-State
Outputs disabled; V
CC
= 5.5V
Outputs Low; V
CC
= 5.5V
TYPICAL
1.8
1.4
4
6
500
9
UNIT
ns
pF
pF
µA
mA
ORDERING INFORMATION
PACKAGES
56-pin SSOP Type III
56-pin TSSOP Type II
56-pin SSOP Type III
56-pin TSSOP Type II
TEMPERATURE RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH AMERICA
74ABT16825A DL
74ABT16825A DGG
74ABTH16825A DL
74ABTH16825A DGG
NORTH AMERICA
BT16825A DL
BT16825A DGG
BH16825A DL
BH16825A DGG
DWG NUMBER
SOT371-1
SOT364-1
SOT371-1
SOT364-1
PIN DESCRIPTION
PIN NUMBER
55, 54, 52, 51, 49, 48, 47, 45, 44,
41, 40, 38, 37, 36, 34, 33, 31, 30
2, 3, 5, 6, 8, 9, 10, 12, 13
16, 17, 19, 20, 21, 23, 24, 26, 27
1, 56
28, 29
4, 11, 14, 15, 18, 25, 32, 39, 42, 43, 46, 53
7, 22, 35, 50
SYMBOL
1A0 – 1A9
2A0 – 2A9
1Y0 – 1Y9
2Y0 – 2Y9
1OE0, 1OE1
2OE0, 2OE1
GND
V
CC
Data inputs
Data outputs
Output enable inputs (active-Low)
Ground (0V)
Positive supply voltage
FUNCTION
1998 Feb 25
2
853-1804 19018
Philips Semiconductors
Product specification
18-bit buffer/line driver; non-inverting (3-State)
74ABT16825A
74ABTH16825A
FUNCTION TABLE
INPUTS
nOEx
L
L
H
L
X
Z
H
=
=
=
=
nAx
L
H
OUTPUTS
nYx
L
H
OPERATING
MODE
Transparent
Transparent
High impedance
LOGIC SYMBOL
55
54
52
51
49
48
47
45
44
1A0 1A1 1A2 1A3 1A4 1A5 1A6
1
56
1OE0
1OE1
1Y0 1Y1 1Y2 1Y3 1Y4 1Y5 1Y6
1A7 1A8
X
Z
High voltage level
Low voltage level
Don’t care
High impedance “off ” state
1Y7 1Y8
2
41
3
40
5
38
6
37
8
36
9
34
10
33
12
31
13
30
2A0 2A1 2A2 2A3 2A4 2A5 2A6
28
29
2OE0
2OE1
2Y0 2Y1 2Y2 2Y3 2Y4 2Y5 2Y6
2A7 2A8
2Y7 2Y8
16
17
19
20
21
23
24
26
27
SA00072
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
V
CC
I
IK
V
I
I
OK
V
OUT
I
OUT
T
stg
PARAMETER
DC supply voltage
DC input diode current
DC input voltage
3
DC output diode current
DC output voltage
3
DC output current
Output in High state
Storage temperature range
–64
–65 to 150
°C
V
O
< 0
Output in Off or High state
Output in Low state
V
I
< 0
CONDITIONS
RATING
–0.5 to +7.0
–18
–1.2 to +7.0
–50
–0.5 to +5.5
128
mA
UNIT
V
mA
V
mA
V
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.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
CC
V
I
V
IH
V
IL
I
OH
I
OL
∆t/∆v
T
amb
DC supply voltage
Input voltage
High-level input voltage
Low-level Input voltage
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature range
0
–40
PARAMETER
LIMITS
MIN
4.5
0
2.0
0.8
–32
64
10
+85
MAX
5.5
V
CC
UNIT
V
V
V
V
mA
mA
ns/V
°C
1998 Feb 25
4
Philips Semiconductors
Product specification
18-bit buffer/line driver; non-inverting (3-State)
74ABT16825A
74ABTH16825A
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25°C
MIN
V
IK
V
OH
V
OL
I
I
Input clamp voltage
High-level output voltage
Low-level output voltage
Input leakage current
ABT16825A
In ut
Input leakage current
74ABTH16825A
V
CC
= 4.5V; I
IK
= –18mA
V
CC
= 4.5V; I
OH
= –3mA; V
I
= V
IL
or V
IH
V
CC
= 5.0V; I
OH
= –3mA; V
I
= V
IL
or V
IH
V
CC
= 4.5V; I
OH
= –32mA; V
I
= V
IL
or V
IH
V
CC
= 4.5V; I
OL
= 64mA; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
I
= GND or 5.5V
V
CC
= 5.5V; V
I
= V
CC
or GND
V
CC
= 5.5V; V
I
= V
CC
V
CC
= 5.5V; V
I
= 0
I
HOLD
I
OFF
I
PU
/I
PD
I
OZH
I
OZL
I
CEX
I
O
I
CCH
I
CCL
I
CCZ
∆I
CC
∆I
CC
Additional supply current per
input pin
2
74ABT16825A
Additional supply current per
input pin
2
74ABTH16825A
Quiescent supply current
Bus Hold current A inputs
5
74ABTH16825A
Power-off leakage current
Power-up/down 3-State
output current
3
3-State output High current
3-State output Low current
Output High leakage current
Output current
1
V
CC
= 4.5V; V
I
= 0.8V
V
CC
= 4.5V; V
I
= 2.0V
V
CC
= 5.5V; V
I
= 0 to 5.5V
V
CC
= 0.0V; V
O
= 4.5V; V
I
= 0V or 5.5V
V
CC
= 2.1V; V
O
= 0.5V; V
I
= GND or V
CC
;
V
OE
= Don’t care
V
CC
= 5.5V; V
O
= 5.5V; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
O
= 0.0V; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
O
= 5.5V; V
I
= GND or V
CC
V
CC
= 5.5V; V
O
= 2.5V
V
CC
= 5.5V; Outputs High, V
I
= GND or V
CC
V
CC
= 5.5V; Outputs Low, V
I
= GND or V
CC
V
CC
= 5.5V; Outputs 3-State;
V
I
= GND or V
CC
V
CC
= 5.5V; one input at 3.4V,
other inputs at V
CC
or GND
V
CC
= 5.5V; one input at 3.4V,
other inputs at V
CC
or GND
–50
Control
pins
Data pins
4
ins
35
–75
±500
±5.0
±5.0
1.0
–1.0
1.0
–70
0.5
9
0.5
10
0.2
±100
±50
10
–10
50
–180
1
19
1
500
1
–50
±100
±50
10
–10
50
–180
1
19
1
500
1
µA
µA
µA
µA
µA
mA
mA
mA
mA
µA
mA
2.5
3.0
2.0
TYP
–0.9
2.9
3.4
2.4
0.42
±0.01
±0.01
0.01
–1
0.55
±1.0
±1
1
–3
35
–75
µA
MAX
–1.2
2.5
3.0
2.0
0.55
±1.0
±1
1
–5
T
amb
= –40°C
to +85°C
MIN
MAX
–1.2
V
V
V
V
V
µA
µA
µA
µA
UNIT
I
I
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. From V
CC
= 2.1V to V
CC
= 5V
±
10% a
transition time of up to 100µsec is permitted.
4. Unused pins at V
CC
or GND.
5. This is the bus hold overdrive current required to force the input to the opposite logic state.
AC CHARACTERISTICS
GND = 0V, t
R
= t
F
= 2.5ns, C
L
= 50pF, R
L
= 500Ω
LIMITS
SYMBOL
PARAMETER
WAVEFORM
MIN
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
nAx to nYx
Output enable time
to High and Low level
Output disable time
from High and Low level
1
2
2
1.0
0.6
1.0
1.0
2.0
1.6
T
amb
= +25
o
C
V
CC
= +5.0V
TYP
1.8
1.4
2.9
2.9
3.3
2.5
MAX
2.5
2.0
3.8
3.8
4.5
3.4
T
amb
= -40 to
+85
o
C
V
CC
= +5.0V
±0.5V
MIN
1.0
0.6
1.0
1.0
2.0
1.6
MAX
2.8
2.3
4.8
5.0
5.2
3.7
ns
ns
ns
UNIT
1998 Feb 25
5
嵌入式系统
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