Page 1
74ABT16245B
74ABTH16245B
16-bit bus transceiver (3-state)
Product specification
Supersedes data of 1996 Nov 20
IC23 Data Handbook
1998 Feb 25
INTEGRATED CIRCUITS
Page 2
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-bit bus transceiver (3-State)
2
1998 Feb 25 853-1742 19018
FEA TURES
•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/–32mA
•Latch–up protection exceeds 500mA per JEDEC Std 17
•Live insertion/extraction permitted
•ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200V per Machine Model
•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
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.
QUICK REFERENCE DA TA
SYMBOL PARAMETER
CONDITIONS
T
amb
= 25°C; GND = 0V
TYPICAL UNIT
t
PLH
t
PHL
Propagation delay
nAx to nBx or nBx to nAx
CL = 50pF; VCC = 5V
2.0
2.3
ns
C
IN
Input capacitance VI = 0V or V
CC
4 pF
C
I/O
I/O pin capacitance VO = 0V or VCC; 3-State 7 pF
I
CCZ
pp
Outputs disabled; VCC =5.5V 500 µA
I
CCL
Quiescent su ly current
Output Low; VCC =5.5V 10 mA
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
48-Pin Plastic SSOP Type III –40°C to +85°C 74ABT16245B DL BT16245B DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ABT16245B DGG BT16245B DGG SOT362-1
48-Pin Plastic SSOP Type III –40°C to +85°C 74ABTH16245B DL BH16245B DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ABTH16245B DGG BH16245B DGG SOT362-1
Page 3
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-bit bus transceiver (3-State)
1998 Feb 25
3
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1DIR
1B0
1B1
GND
1B2
1B3
1B4
1B5
GND
1B6
1B7
2B0
2B1
GND
2B3
V
CC
2B4
V
CC
2B2
2B5
GND
2B7
2DIR
2B6
1OE
1A0
1A1
GND
1A2
1A3
1A4
1A5
GND
1A6
1A7
2A0
2A1
GND
2A3
V
CC
2A4
V
CC
2A2
2A5
GND
2A7
2OE
2A6
SA00020
LOGIC SYMBOL
2DIR
24
36
35
33
32
30
29
27
26 23
22
20
19
17
16
14
13
2OE
2A0
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2B0
2B1
2B2
2B3
2B4
2B5
2B6
2B7
25
1DIR
1
47
46
44
43
41
40
38
37 12
11
9
8
6
5
3
2
1OE
1A0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1B0
1B1
1B2
1B3
1B4
1B5
1B6
1B7
48
SA00021
PIN DESCRIPTION
SYMBOL
PIN
NUMBER
NAME AND FUNCTION
1DIR,
2DIR
1, 24
Direction control inputs
(Active-High)
1A0 – 1A7,
2A0 – 2A7
47, 46, 44, 43
41, 40, 38, 37
36, 35, 33, 32
30, 29, 27, 26
Data inputs/outputs (A side)
1B0 – 1B7
2B0 – 2B7
2, 3, 5, 6
8, 9, 11, 12
13, 14, 16, 17
19, 20, 22, 23
Data inputs/outputs (B side)
1OE, 2OE 48, 25 Output enables
GND
4, 10, 15, 21
28, 34, 39, 45
Ground (0V)
V
CC
7, 18, 31, 42 Positive supply voltage
LOGIC SYMBOL (IEEE/IEC)
∇ 1
48
47
G3
1
3 EN1 (BA)
3 EN2 (AB)
2 ∇
2
3
44 5
43 6
41 8
40 9
38 11
37 12
46
25
24
∇ 4
36
35
5 ∇
13
14
33 16
32 17
30 19
29 20
27 22
26 23
G6
6 EN4 (BA)
6 EN5 (AB)
SA00022
1OE
1DIR
2OE
2DIR
1A0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
2A0
2A1
2A2
2A3
2A4
2A5
2A6
2A7
1B0
1B1
1B2
1B3
1B4
1B5
1B6
1B7
2B0
2B1
2B2
2B3
2B4
2B5
2B6
2B7
Page 4
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-bit bus transceiver (3-State)
1998 Feb 25
4
FUNCTION TABLE
INPUTS INPUTS/OUTPUTS
nOE nDIR nAx nBx
L L A = B Inputs
L H Inputs B = A
H X Z Z
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” scale
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 VI < 0 –18 mA
V
I
DC input voltage
3
–1.2 to +7.0 V
I
OK
DC output diode current VO < 0 –50 mA
V
OUT
DC output voltage
3
output in Off or High state –0.5 to +5.5 V
p
output in Low state 128
I
OUT
DC output current
output in High state –64
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
LIMITS
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 10 ns/V
T
amb
Operating free-air temperature range –40 +85 °C
Page 5
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-bit bus transceiver (3-State)
1998 Feb 25
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 VCC = 4.5V; IIK = –18mA –0.9 –1.2 –1.2 V
VCC = 4.5V; IOH = –3mA; VI = VIL or V
IH
2.5 2.9 2.5 V
V
OH
High-level output voltage VCC = 5.0V; IOH = –3mA; VI = VIL or V
IH
3.0 3.4 3.0 V
VCC = 4.5V; IOH = –32mA; VI = VIL or V
IH
2.0 2.4 2.0 V
V
OL
Low-level output voltage VCC = 4.5V; IOL = 64mA; VI = VIL or V
IH
0.42 0.55 0.55 V
I
I
Input leakage current VCC = 5.5V; VI = GND or 5.5V
Control
pins
±0.01 ±1.0 ±1.0 µA
VCC = 4.5V; VI = 0.8V 50 50
I
HOLD
Bus hold current
A and B inputs
VCC = 5.5V; VI = 2.0V –75 –75
µA
74ABTH16245B
VCC = 5.5V; VI = 0 to 5.5V ±500
I
OFF
Power-off leakage current VCC = 0.0V; VO or V
I
≤ 4.5V ±5.0 ±100 ±100 µA
IPU/I
PD
Power-up/down 3-State
output current
VCC = 2.0V; VO = 0.5V; VI = GND or V
CC;
VOE = Don’t care
±5.0 ±50 ±50 µA
IIH+I
OZH
3-State output High current VCC = 5.5V; VO = 5.5V; VI = VIL or V
IH
0.1 10 10 µA
IIL+I
OZL
3-State output Low current VCC = 5.5V; VO = 0.0V; VI = VIL or V
IH
0.1 10 10 µA
I
CEX
Output high leakage current VCC = 5.5V; VO = 5.5V; VI = GND or V
CC
5.0 50 50 µA
I
O
Output current
1
VCC = 5.5V; VO = 2.5V –50 –92 –180 –50 –180 mA
I
CCH
VCC = 5.5V; Outputs High, VI = GND or V
CC
0.30 0.70 0.70 mA
I
CCL
Quiescent supply current VCC = 5.5V; Outputs Low , VI = GND or V
CC
10 19 19 mA
I
CCZ
VCC = 5.5V; Outputs 3-State;
VI = GND or V
CC
0.30 0.70 0.70 mA
Outputs enabled, one data input at 3.4V ,
other inputs at VCC or GND; VCC = 5.5V
400 700 700 µA
∆I
CC
Additional supply current per
input pin
2
Outputs disabled, one data input at 3.4V ,
other inputs at VCC or GND; VCC = 5.5V
100 250 250 µA
in ut in
Control pins, outputs disabled, one enable
input at 3.4V, other inputs at VCC or GND;
VCC = 5.5V
400 700 700 µA
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 is the bus hold overdrive current required to force the input to the opposite logic state.
Page 6
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-bit bus transceiver (3-State)
1998 Feb 25
6
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω
LIMITS
SYMBOL PARAMETER WAVEFORM
T
amb
= +25°C
VCC = +5.0V
T
amb
= –40°C to +85°C
VCC = +5.0V ±0.5V
UNIT
Min Typ Max Min Max
t
PLH
t
PHL
Propagation delay
nAx to nBx or nBx to nAx
1
1.0
1.0
2.0
2.3
3.2
3.5
1.0
1.0
3.5
4.0
ns
t
PZH
t
PZL
Output enable time
to High and Low level
2
1.0
1.7
3.1
4.0
4.4
5.2
1.0
1.7
5.1
6.1
ns
t
PHZ
t
PLZ
Output disable time
from High and Low level
2
1.7
1.5
3.5
3.2
4.9
4.4
1.7
1.5
5.4
5.0
ns
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
INPUT
V
M
V
M
OUTPUT
V
M
V
M
t
PLH
t
PHL
SA00023
Waveform 1. Input to Output Propagation Delays
nOE INPUT
OUTPUT
OUTPUT
V
M
V
M
t
PZH
t
PHZ
V
OH
V
M
V
M
V
OL
t
PZL
t
PLZ
3.5V
0V
VOL + 0.3V
V
OH
– 0.3V
SA00024
Waveform 2. 3-State Output Enable and Disable Times
Page 7
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-bit bus transceiver (3-State)
1998 Feb 25
7
TEST CIRCUIT
PULSE
GENERATOR
R
T
V
IN
D.U.T.
V
OUT
R
L
V
CC
R
L
7.0V
Test Circuit for 3-State Outputs
V
M
V
M
t
W
AMP (V)
NEGATIVE
PULSE
10% 10%
90%
90%
0V
V
M
V
M
t
W
AMP (V)
POSITIVE
PULSE
90% 90%
10%
10%
0V
t
THL
(tF)
t
TLH
(tR)t
THL
(tF)
t
TLH
(tR)
VM = 1.5V
Input Pulse Definition
DEFINITIONS
RL = Load resistor; see AC CHARACTERISTICS for value.
C
L
= Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
RT = Termination resistance should be equal to Z
OUT
of
pulse generators.
INPUT PULSE REQUIREMENTS
FAMILY
Amplitude Rep. Rate t
W
t
R
t
F
74ABT/H16 3.0V 1MHz 500ns 2.5ns 2.5ns
SWITCH POSITION
TEST SWITCH
t
PLZ
closed
t
PZL
closed
All other open
SA00018
C
L
Page 8
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-Bit bus transceiver (3-State)
8
1998 Feb 25
SSOP48: plastic shrink small outline package; 48 leads; body width 7.5 mm SOT370-1
Page 9
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-Bit bus transceiver (3-State)
1998 Feb 25
9
TSSOP48: plastic thin shrink small outline package; 48 leads; body width 6.1mm SOT362-1
Page 10
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-Bit bus transceiver (3-State)
1998 Feb 25
10
NOTES
Page 11
Philips Semiconductors Product specification
74ABT16245B
74ABTH16245B
16-Bit bus transceiver (3-State)
yyyy mmm dd
11
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print code Date of release: 05-96
Document order number: 9397-750-03486
Data sheet
status
Objective
specification
Preliminary
specification
Product
specification
Product
status
Development
Qualification
Production
Definition
[1]
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make chages at any time without notice in order to
improve design and supply the best possible product.
This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.
Data sheet status
[1] Please consult the most recently issued datasheet before initiating or completing a design.
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