Page 1
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
Product specification
Supersedes data of 1995 Sep 18
IC23 Data Handbook
1998 Feb 25
INTEGRATED CIRCUITS
Page 2
Philips Semiconductors Product specification
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
2
1998 Feb 25 853-1807 19018
FEA TURES
•Power-up 3-State
•Multiple V
CC
and GND pins minimize switching noise
•Provides ideal interface and increases fan-out of MOS
Microprocessors
•3-State buffers sink 64mA and source 32mA
•74ABTH16541 incorporates bus-hold data inputs which eliminate
the need for external pull-up resistors to hold unused inputs
•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
•Two 8-bit bus interfaces
•Bus-hold data inputs eliminate the need for external pull-up
resistors to hold unused inputs
DESCRIPTION
The 74ABT16541 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT16541 has two octal buffers that are ideal for driving bus
lines. The outputs are all capable of sinking 64mA and sourcing
32mA.
Two options are available, 74ABT16541 which does not have the
bus-hold feature and 74ABTH16541 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 nYx
CL = 50pF; VCC = 5V
2.0
1.5
ns
C
IN
Input capacitance VI = 0V or V
CC
4 pF
C
OUT
Output capacitance VO = 0V or VCC; 3-State 6 pF
I
CCZ
pp
Outputs disabled; VCC =5.5V 500 µA
I
CCL
Quiescent supply current
Outputs LOW; VCC = 5.5V 8 mA
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
48-Pin Plastic SSOP Type III –40°C to +85°C 74ABT16541 DL BT16541 DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ABT16541 DGG BT16541 DGG SOT362-1
48-Pin Plastic SSOP Type III –40°C to +85°C 74ABTH16541 DL BH16541 DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ABTH16541 DGG BH16541 DGG SOT362-1
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
47, 46, 44, 43,
41, 40, 38, 37,
36, 35, 33, 32,
30, 29, 27, 26
1A0 - 1A7
2A0 - 2A7
Data inputs
2, 3, 5, 6,
8, 9, 11, 12,
13, 14, 16, 17
19, 20, 22, 23
1Y0 - 1Y7,
2Y0 - 2Y7
Data outputs
1, 48
24, 25
1OE0, 1OE1,
2OE0, 2OE1
Output enables
4, 10, 15, 21
28, 34, 39, 45
GND Ground (0V)
7, 18, 31, 42 V
CC
Positive supply voltage
Page 3
Philips Semiconductors Product specification
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
1998 Feb 25
3
LOGIC SYMBOL
SA00069
1
48
47
46
44
43
41
40
38
37
2
3
5
6
8
9
11
12
24
25
36
35
33
32
30
29
27
26
13
14
16
17
19
20
22
23
1OE
0
1OE
1
1A0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1Y0
1Y1
1Y2
1Y3
1Y4
1Y5
1Y6
1Y7
2OE
0
2OE
1
2A0
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2Y0
2Y1
2Y2
2Y3
2Y4
2Y5
2Y6
2Y7
PIN CONFIGURA TION
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
1OE0
1Y0
1Y1
GND
1Y2
1Y3
1Y4
1Y5
GND
1Y6
1Y7
2Y0
2Y1
GND
2Y3
V
CC
2Y4
V
CC
2Y2
2Y5
GND
2Y7
2OE
0
2Y6
1OE
1
1A0
1A1
GND
1A2
1A3
1A4
1A5
GND
1A6
1A7
2A0
2A1
GND
2A3
V
CC
2A4
V
CC
2A2
2A5
GND
2A7
2OE
1
2A6
SA00068
LOGIC SYMBOL (IEEE/IEC)
EN1
1 ∇
EN2
1
2 ∇
1
SA00070
1
48
24
25
47
46
44
43
41
40
38
37
36
35
33
32
30
29
27
26
2
3
5
6
8
9
11
12
13
14
16
17
19
20
22
23
&
&
1OE
0
1OE
1
2OE
0
2OE
1
1A0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
2A0
2A1
2A2
2A3
2A4
2A5
2A6
2A7
1Y0
1Y1
1Y2
1Y3
1Y4
1Y5
1Y6
1Y7
2Y0
2Y1
2Y2
2Y3
2Y4
2Y5
2Y6
2Y7
FUNCTION TABLE
INPUTS OUTPUTS
nOE0 nOE1 nIx nYx
L L L L
L L H H
X H X Z
H X X Z
H = HIGH voltage level
L = LOW voltage level
X = D0n’t care
Z = High impedance “off” state
Page 4
Philips Semiconductors Product specification
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
1998 Feb 25
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 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
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
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
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
1998 Feb 25
5
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL P ARAMETER 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 ±0.01 ±1.0 ±1.0 µA
p
VCC = 5.5V; VI = VCC or GND
Control
pins
±0.01 ±1 ±1 µA
I
I
In ut leakage current
74ABTH16541
VCC = 5.5V; VI = V
CC
p
0.01 1 1 µA
VCC = 5.5V; VI = 0
Data ins
–2 –3 –5 µA
VCC = 4.5V; VI = 0.8V 50 50
I
HOLD
B
us Hold current A inputs
3
74ABTH16541
VCC = 4.5V; VI = 2.0V –75 –75
µA
74ABTH16541
VCC = 5.5V; VI = 0 to 5.5V ±500
I
OFF
Power-off leakage current VCC = 0.0V; VO or VI ≤ 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 VCC;
VOE = V
CC
±5.0 ±50 ±50 µA
I
OZH
3-State output High current VCC = 5.5V; VO = 2.7V; VI = VIL or V
IH
1.0 10 10 µA
I
OZL
3-State output Low current VCC = 5.5V; VO = 0.5V; VI = VIL or V
IH
–1.0 –10 –10 µA
I
CEX
Output high leakage current VCC = 5.5V; VO = 5.5V; VI = GND or V
CC
1.0 50 50 µA
I
O
Output current
1
VCC = 5.5V; VO = 2.5V –50 –70 –180 –50 –180 mA
I
CCH
VCC = 5.5V; Outputs High, VI = GND or V
CC
0.5 1.0 1.0 mA
I
CCL
pp
VCC = 5.5V; Outputs Low , VI = GND or V
CC
8 19 19 mA
I
CCZ
Quiescent su ly current
VCC = 5.5V; Outputs 3-State;
VI = GND or V
CC
0.5 1.0 1.0 mA
∆I
CC
Additional supply current per
input pin2 74ABT16541
Outputs enabled, one input at 3.4V , other
inputs at VCC or GND; VCC = 5.5V
100 250 250 µA
∆I
CC
Additional supply current per
input pin
2
74ABTH16541
Outputs enabled, one input at 3.4V , other
inputs at VCC or GND; VCC = 5.5V
0.2 1.0 1.0 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 is the bus hold overdrive current required to force the input to the opposite logic state.
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
nIx to nYx
1
1.0
1.0
2.0
1.5
3.0
3.6
1.0
1.0
3.4
4.2
ns
t
PZH
t
PZL
Output enable time
to High and Low level
2
1.3
1.6
2.9
3.1
4.3
4.7
1.3
1.6
5.2
6.0
ns
t
PHZ
t
PLZ
Output disable time
from High and Low level
2
1.3
1.0
3.5
2.8
4.4
3.6
1.3
1.0
5.1
3.9
ns
Page 6
Philips Semiconductors Product specification
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
1998 Feb 25
6
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
nAx INPUT
V
M
V
M
nYx OUTPUT
V
M
V
M
t
PHL
t
PLH
SA00037
V
IN
Waveform 1. Input (An) to Output (Yn) Propagation Delays
nOEx INPUT
V
M
V
M
t
PZH
t
PHZ
nYx OUTPUT
V
OH
V
M
V
M
nYx OUTPUT
V
OL
t
PZL
t
PLZ
3.5V
0V
V
OL
+ 0.3V
VOH – 0.3V
SA00071
Waveform 2. 3-State Output Enable and Disable Times
TEST CIRCUIT AND WAVEFORMS
PULSE
GENERATOR
R
T
V
IN
V
OUT
C
L
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 3.0V 1MHz 500ns 2.5ns 2.5ns
SWITCH POSITION
TEST SWITCH
t
PLZ
closed
t
PZL
closed
All other open
SA00012
D.U.T.
Page 7
Philips Semiconductors Product specification
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
1998 Feb 25
7
SSOP48: plastic shrink small outline package; 48 leads; body width 7.5 mm SOT370-1
Page 8
Philips Semiconductors Product specification
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
1998 Feb 25
8
TSSOP48: plastic thin shrink small outline package; 48 leads; body width 6.1mm SOT362-1
Page 9
Philips Semiconductors Product specification
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
1998 Feb 25
9
NOTES
Page 10
Philips Semiconductors Product specification
74ABT16541
74ABTH16541
16-bit buffer/line driver (3-State)
yyyy mmm dd
10
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: 9397-750-03495
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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