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Электронный компонент: 74ABT2245D

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Philips
Semiconductors
74ABT2245
Octal transceiver with direction pin with
30
series termination resistors (3-State)
Product specification
Supersedes data of 1996 Sep 10
1998 Jan 16
INTEGRATED CIRCUITS
IC23 Data Handbook
Philips Semiconductors
Product specification
74ABT2245
Octal transceiver with direction pin
and 30
series termination resistors (3-State)
2
1998 Jan 16
853-1761 18865
FEATURES
Octal bidirectional bus interface
3-State buffers
Output capability: +12mA/32mA
Latch-up protection exceeds 500mA per Jedec Std 17
ESD protection exceeds 2000 V per MIL STD 833 Method 3015
and 200 V per Machine Model
Power-up 3-State
Live insertion/extraction permitted
Same as 74ABT245-1
Outputs include series resistance of 30
, making external
termination resistors unnecessary
Inputs are disabled during 3-State mode
DESCRIPTION
The 74ABT2245 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed.
The 74ABT2245 device is an octal transceiver featuring
non-inverting 3-State bus compatible outputs in both send and
receive directions. The control function implementation minimizes
external timing requirements. The device features an Output Enable
(OE) input for easy cascading and a Direction (DIR) input for
direction control.
The 74ABT2245 is designed with 30
series resistance in both the
High and Low states of the output. This design reduces line noise in
applications such as memory address drivers, clock drivers, and bus
receivers/transmitters.
The 74ABT2245 is the same as the 74ABT245-1. The part number
has been changed to reflect industry standards.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
C; GND = 0V
TYPICAL
UNIT
t
PLH
t
PHL
Propagation delay
An to Bn or Bn to An
C
L
= 50pF; V
CC
= 5V
3.9
ns
C
IN
Input capacitance DIR, OE
V
I
= 0V or V
CC
4
pF
C
I/O
I/O pin 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
74ABT2245 N
74ABT2245 N
SOT146-1
20-Pin plastic SO
40
C to +85
C
74ABT2245 D
74ABT2245 D
SOT163-1
20-Pin Plastic SSOP Type II
40
C to +85
C
74ABT2245 DB
74ABT2245 DB
SOT339-1
20-Pin Plastic TSSOP Type I
40
C to +85
C
74ABT2245 PW
7ABT2245PW 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
DIR
A0
A1
A2
A3
A4
A5
A6
A7
GND
V
CC
OE
B0
B1
B2
B3
B4
B5
B6
B7
SA00121
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1
DIR
Direction control input
2, 3, 4, 5, 6, 7, 8, 9
A0 A7
Data inputs/outputs (A side)
18, 17, 16, 15, 14,
13, 12, 11
B0 B7
Data inputs/outputs (B side)
19
OE
Output enable input
(active-Low)
10
GND
Ground (0V)
20
V
CC
Positive supply voltage
Philips Semiconductors
Product specification
74ABT2245
Octal transceiver with direction pin
and 30
series termination resistors (3-State)
1998 Jan 16
3
LOGIC SYMBOL
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
OE
19
DIR
1
SA00122
LOGIC SYMBOL IEEE/IEC
1
2
SA00313
19
1
G3
3 EN2 (AB)
3 EN1 (BA)
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
FUNCTION TABLE
INPUTS
INPUTS/OUTPUTS
OE
DIR
An
Bn
L
L
An = Bn
Inputs
L
H
Inputs
Bn = An
H
X
Z
Z
H = High voltage level
L
= Low voltage level
X = Don't care
Z = High impedance "off" state
SCHEMATIC OF EACH OUTPUT
OUTPUT
V
CC
SA00237
Philips Semiconductors
Product specification
74ABT2245
Octal transceiver with direction pin
and 30
series termination resistors (3-State)
1998 Jan 16
4
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.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
Min
Max
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
12
mA
t/
v
Input transition rise or fall rate
0
5
ns/V
T
amb
Operating free-air temperature range
40
+85
C
Philips Semiconductors
Product specification
74ABT2245
Octal transceiver with direction pin
and 30
series termination resistors (3-State)
1998 Jan 16
5
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
O
Low level output voltage
V
CC
= 4.5V; I
OL
= 5mA; V
I
= V
IL
or V
IH
0.32
0.55
0.55
V
V
OL
Low-level output voltage
V
CC
= 4.5V; I
OL
= 12mA; V
I
= V
IL
or V
IH
0.5
0.8
0.8
V
I
Input leakage
Control pins
V
CC
= 5.5V; V
I
= GND or 5.5V
0.01
1.0
1.0
A
I
I
g
current
Data pins
V
CC
= 5.5V; V
I
= GND or 5.5V
5
100
100
A
I
OFF
Power-off leakage current
V
CC
= 0.0V; V
I
or
V
O
4.5V
5.0
100
100
A
I
PU
/I
PD
Power-up/down 3-State
output current
3
V
CC
= 2.1V; V
O
= 0.5V; V
I
= GND or V
CC
;
V
OE
= Don't care
5.0
50
50
A
I
IH
+ 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
IL
+ 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
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 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. From V
CC
= 2.1V to V
CC
= 5V
10%, a
transition time of up to 100
sec is permitted.