INTEGRATED CIRCUITS
74ABT16245B
74ABTH16245B
16-bit bus transceiver (3-State)
Product data
Supersedes data of 1998 Feb 25
2002 Dec 13
Philips
Semiconductors
Philips Semiconductors
Product data
16-bit bus transceiver (3-State)
74ABT16245B
74ABTH16245B
FEATURES
•
16-bit bidirectional bus interface
•
Power-up 3-State
•
Multiple V
CC
and GND pins minimize switching noise
•
3-State buffers
•
Output capability: +64 mA / –32 mA
•
Latch-up protection exceeds 500 mA
per
JEDEC Std 17
•
Live insertion/extraction permitted
•
ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200 V per Machine Model
DESCRIPTION
The 74ABT16245B high-performance BiCMOS device combines
low static and dynamic power dissipation with high speed and high
output drive.
The 74ABT16245B device is a dual 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 two Output
Enable (1OE, 2OE) inputs for easy cascading and two Direction
(1DIR, 2DIR) inputs for direction control.
Two options are available, 74ABT16245B which does not have the
bus hold feature and the 74ABTH16245B which incorporates the
bus hold feature.
•
74ABTH16245B incorporates bus-hold data inputs which
eliminate the need for external pull-up resistors to hold unused
inputs
•
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
I/O
I
CCZ
I
CCL
PARAMETER
Propagation delay
nAx to nBx or nBx to nAx
Input capacitance
I/O pin capacitance
Quiescent supply current
CONDITIONS
T
amb
= 25
°C;
GND = 0 V
C
L
= 50 pF; V
CC
= 5 V
V
I
= 0 V or V
CC
V
O
= 0 V or V
CC
; 3-State
Outputs disabled; V
CC
= 5.5 V
Output Low; V
CC
= 5.5 V
TYPICAL
2.0
2.3
4
7
500
10
UNIT
ns
pF
pF
µA
mA
ORDERING INFORMATION
PACKAGES
48-Pin Plastic SSOP Type III
48-Pin Plastic TSSOP Type II
48-Pin Plastic SSOP Type III
TEMPERATURE RANGE
–40
°C
to +85
°C
–40
°C
to +85
°C
–40
°C
to +85
°C
PART NUMBER
74ABT16245BDL
74ABT16245BDGG
74ABTH16245BDL
DWG NUMBER
SOT370-1
SOT362-1
SOT370-1
2002 Dec 13
2
Philips Semiconductors
Product data
16-bit bus transceiver (3-State)
74ABT16245B
74ABTH16245B
PIN CONFIGURATION
1DIR
1B0
1B1
GND
1B2
1B3
V
CC
1B4
1B5
1
2
3
4
5
6
7
8
9
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1A0
1A1
GND
1A2
1A3
V
CC
1A4
1A5
GND
1A6
1A7
2A0
2A1
GND
2A2
2A3
V
CC
2A4
2A5
GND
2A6
2A7
2OE
PIN DESCRIPTION
SYMBOL
1DIR,
2DIR
1A0 – 1A7,
2A0 – 2A7
PIN
NUMBER
1, 24
NAME AND FUNCTION
Direction control inputs
(Active-HIGH)
47, 46, 44, 43
41, 40, 38, 37
Data inputs/outputs (A side)
36, 35, 33, 32
30, 29, 27, 26
2, 3, 5, 6
8, 9, 11, 12
Data inputs/outputs (B side)
13, 14, 16, 17
19, 20, 22, 23
48, 25
Output enables
GND 10
1B6 11
1B7 12
2B0 13
2B1 14
GND 15
2B2 16
2B3 17
V
CC
18
2B4 19
2B5 20
GND
21
1B0 – 1B7
2B0 – 2B7
1OE, 2OE
GND
V
CC
4, 10, 15, 21
Ground (0 V)
28, 34, 39, 45
7, 18, 31, 42
Positive supply voltage
LOGIC SYMBOL (IEEE/IEC)
1OE
1DIR
48
1
G3
3 EN1 (BA)
3 EN2 (AB)
2OE
2DIR
25
24
G6
6 EN4 (BA)
6 EN5 (AB)
2B6 22
2B7 23
2DIR
24
SA00020
LOGIC SYMBOL
1DIR
1
48
1OE
2
1B0
3
2DIR
24
25
2A0
36
13
1A0
47
∇
1
2
∇
2
1B0
1A1
2OE
2B0
1A3
1A4
1A5
1A2
46
44
43
41
40
38
37
36
∇
4
5
∇
3
5
6
8
9
11
12
13
1B1
1B2
1B3
1B4
1B5
1B6
1B7
2B0
1A0
47
1A1
46
1B1
2A1
35
14
2B1
1A2
44
5
1B2
2A2
33
16
2B2
1A6
1A7
1A3
43
6
1B3
2A3
32
17
2B3
2A0
1A4
41
8
1B4
2A4
30
19
2B4
2A1
35
33
32
30
29
27
26
14
16
17
19
20
22
23
2B1
2B2
2B3
2B4
2B5
2B6
2B7
1A5
40
9
1B5
2A5
29
20
2B5
2A2
2A3
2A4
1A6
38
11
1B6
2A6
27
22
2B6
1A7
37
12
1B7
2A7
26
23
2B7
2A5
2A6
SA00021
2A7
SA00022
2002 Dec 13
3
Philips Semiconductors
Product data
16-bit bus transceiver (3-State)
74ABT16245B
74ABTH16245B
FUNCTION TABLE
INPUTS
nOE
L
L
H
H
L
X
Z
nDIR
L
H
X
INPUTS/OUTPUTS
nAx
A=B
Inputs
Z
nBx
Inputs
B=A
Z
= HIGH voltage level
= LOW voltage level
= Don’t care
= High impedance “off” scale
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
V
CC
I
IK
V
I
I
OK
V
OUT
I
O
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 V
output in Off or HIGH state
output in LOW state
V
I
< 0 V
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
LIMITS
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
Min
4.5
0
2.0
0.8
–32
64
10
+85
Max
5.5
V
CC
V
V
V
V
mA
mA
ns/V
°C
UNIT
2002 Dec 13
4
Philips Semiconductors
Product data
16-bit bus transceiver (3-State)
74ABT16245B
74ABTH16245B
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25
°C
Min
V
IK
Input clamp voltage
V
CC
= 4.5 V; I
IK
= –18 mA
V
CC
= 4.5 V; I
OH
= –3 mA; V
I
= V
IL
or V
IH
V
OH
High-level output voltage
V
CC
= 5.0 V; I
OH
= –3 mA; V
I
= V
IL
or V
IH
V
CC
= 4.5 V; I
OH
= –32 mA; V
I
= V
IL
or V
IH
V
OL
I
I
Low-level output voltage
Input leakage current
Bus hold current
A and B inputs
74ABTH16245B
Power-off leakage current
Power-up/down 3-State
output current
3-State output HIGH current
3-State output LOW current
Output high leakage current
Output current
1
V
CC
= 4.5 V; I
OL
= 64 mA; V
I
= V
IL
or V
IH
V
CC
= 5.5 V; V
I
= GND or 5.5 V
V
CC
= 4.5 V; V
I
= 0.8 V
V
CC
= 5.5 V; V
I
= 2.0 V
V
CC
= 5.5 V; V
I
= 0 to 5.5 V
V
CC
= 0.0 V; V
O
or V
I
≤
4.5 V
V
CC
= 2.0 V; V
O
= 0.5 V; V
I
= GND or V
CC;
V
OE
= Don’t care
V
CC
= 5.5 V; V
O
= 5.5 V; V
I
= V
IL
or V
IH
V
CC
= 5.5 V; V
O
= 0.0 V; V
I
= V
IL
or V
IH
V
CC
= 5.5 V; V
O
= 5.5 V; V
I
= GND or V
CC
V
CC
= 5.5 V; V
O
= 2.5 V
V
CC
= 5.5 V; Outputs High, V
I
= GND or V
CC
Quiescent supply current
V
CC
= 5.5 V; Outputs Low, V
I
= GND or V
CC
V
CC
= 5.5 V; Outputs 3-State;
V
I
= GND or V
CC
Outputs enabled, one data input at 3.4 V,
other inputs at V
CC
or GND; V
CC
= 5.5 V
∆I
CC
Additional supply current per
in ut in
input pin
2
Outputs disabled, one data input at 3.4 V,
other inputs at V
CC
or GND; V
CC
= 5.5 V
Control pins, outputs disabled, one enable
input at 3.4 V, other inputs at V
CC
or GND;
V
CC
= 5.5 V
–50
Control
pins
50
–75
±500
±5.0
±5.0
0.1
0.1
5.0
–92
0.30
10
0.30
400
100
±100
±50
10
10
50
–180
0.70
19
0.70
700
250
–50
±100
±50
10
10
50
–180
0.70
19
0.70
700
250
µA
µA
µA
µA
µA
mA
mA
mA
mA
µA
µA
µA
2.5
3.0
2.0
Typ
–0.9
2.9
3.4
2.4
0.42
±0.01
0.55
±1.0
50
–75
µA
Max
–1.2
2.5
3.0
2.0
0.55
±1.0
T
amb
= –40
°C
to +85
°C
Min
Max
–1.2
V
V
V
V
V
µA
UNIT
I
HOLD
I
OFF
I
PU
/I
PD
I
IH
+I
OZH
I
IL
+I
OZL
I
CEX
I
O
I
CCH
I
CCL
I
CCZ
400
700
700
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 3.4 V.
3. This is the bus hold overdrive current required to force the input to the opposite logic state.
2002 Dec 13
5
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