Page 1
INTEGRATED CIRCUITS
74LV245
Octal bus transceiver (3-State)
Product specification
Supersedes data of 1997 Feb 19
IC24 Data Handbook
1998 Apr 20
Page 2
Philips Semiconductors Product specification
74L V245Octal bus transceiver (3-State)
FEA TURES
•Wide operating voltage: 1.0 to 5.5 V
•Optimized for low voltage applications: 1.0 to 3.6 V
•Accepts TTL input levels between V
•Typical V
T
amb
•Typical V
T
amb
(output ground bounce) < 0.8 V at V
OLP
= 25°C
(output VOH undershoot) > 2 V at V
OHV
= 25°C
= 2.7 V and V
CC
CC
CC
CC
= 3.3 V,
= 3.3 V,
•Output capability: bus driver
•I
category: MSI
CC
QUICK REFERENCE DATA
GND = 0 V; T
= 25°C; tr = t
amb
SYMBOL
t
PHL/tPLH
C
I
C
I/O
C
PD
Propagation delay
An to Bn; Bn to A
Input capacitance 3.5 pF
Input/output capacitance 10 pF
Power dissipation capacitance per buffer
NOTE:
1. C
is used to determine the dynamic power dissipation (PD in µW)
PD
= CPD V
P
D
f
= input frequency in MHz; CL = output load capacitance in pF;
i
= output frequency in MHz; VCC = supply voltage in V;
f
o
V
(C
L
2
fi (CL V
CC
2
fo) = sum of the outputs.
CC
≤ 2.5 ns
f
PARAMETER CONDITIONS TYPICAL UNIT
n
2
fo) where:
CC
DESCRIPTION
The 74LV245 is a low-voltage Si-gate CMOS device and is pin and
function compatible with 74HC/HCT245.
= 3.6 V
CL = 15 pF;
VCC = 3.3 V
VCC = 3.3 V
VI = GND to VCC, note 1
The 74LV245 is an octal transceiver featuring non-inverting 3-State
bus compatible outputs in both send and receive directions. The
74LV245 features an output enable (OE
and a send/receive (DIR) input for direction control. OE
outputs so that the buses are effectively isolated.
) input for easy cascading
controls the
7.0 ns
40 pF
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. #
20-Pin Plastic DIL –40°C to +125°C 74LV245 N 74LV245 N SOT146-1
20-Pin Plastic SO –40°C to +125°C 74LV245 D 74LV245 D SOT163-1
20-Pin Plastic SSOP Type II –40°C to +125°C 74LV245 DB 74LV245 DB SOT339-1
20-Pin Plastic TSSOP Type I –40°C to +125°C 74LV245 PW 74LV245PW DH SOT360-1
PIN DESCRIPTION
PIN NUMBER SYMBOL FUNCTION
1 DIR Direction
2, 3, 4, 5,
6, 7, 8, 9
10 GND Ground (0 V)
18, 17, 16, 15,
14, 13, 12, 11
19 OE Output enable input (active LOW)
20 V
A0 to A7Data inputs/outputs
B0 to B7Data inputs/outputs
CC
Positive supply voltage
FUNCTION TABLE
INPUTS INPUTS/OUTPUT
OE DIR A
L L A = B Inputs
L H Inputs B = A
H X Z Z
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
n
B
n
1998 Apr 20 853–1931 19258
2
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Philips Semiconductors Product specification
74LV245Octal bus transceiver (3-State)
PIN CONFIGURATION
1
DIR
A
0
2
3
A
1
4
A
2
5
A
3
6
A
4
7
A
5
8
A
6
9
A
7
10
GND
LOGIC SYMBOL (IEEE/IEC)
19
1
3
G3
3EN1
3EN2
1
SV00624
2
LOGIC SYMBOL
DIR
20
V
CC
19
OE
18
B
0
17
B
1
16
B
2
15
B
3
14
B
4
13
B
5
B
12
6
B
11
7
182
17
1
OE
19
A
0
2
A
1
3
A
2
4
A
3
5
A
4
6
A
5
7
A
6
8
A
7
9
B
0
18
B
1
17
B
2
16
B
3
15
B
4
14
B
5
13
B
6
12
B
7
11
SV00625
4
5
6
7
8
9
16
15
14
13
12
11
SV00626
1998 Apr 20
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Philips Semiconductors Product specification
74LV245Octal bus transceiver (3-State)
RECOMMENDED OPERATING CONDITIONS
SYMBOL PARAMETER CONDITIONS MIN TYP. MAX UNIT
V
V
V
T
amb
tr, t
NOTE:
1. The LV is guaranteed to function down to V
V
CC
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to GND (ground = 0V).
SYMBOL
V
I
I
I
DC supply voltage See Note 1 1.0 3.3 5.5 V
CC
Input voltage 0 – V
I
Output voltage 0 – V
O
Operating ambient temperature range in free air
Input rise and fall times
f
= 5.5V.
CC
See DC and AC
characteristics
VCC = 1.0V to 2.0V
VCC = 2.0V to 2.7V
VCC = 2.7V to 3.6V
VCC = 3.6V to 5.5V
= 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to
–40
–40
–
–
–
–
–
–
–
–
1, 2
PARAMETER CONDITIONS RATING UNIT
DC supply voltage –0.5 to +7.0 V
CC
DC input diode current VI < –0.5 or VI > VCC + 0.5V 20 mA
IK
DC output diode current VO < –0.5 or VO > VCC + 0.5V 50 mA
OK
DC output source or sink current
O
– bus driver outputs
–0.5V < VO < VCC + 0.5V
35
CC
CC
+85
+125
500
200
100
50
V
V
°C
ns/V
mA
I
I
P
GND
T
TOT
DC VCC or GND current for types with
,
– bus driver outputs 70
CC
Storage temperature range –65 to +150 °C
stg
Power dissipation per package
– plastic DIL
– plastic mini-pack (SO)
– plastic shrink mini-pack (SSOP and TSSOP)
for temperature range: –40 to +125°C
above +70°C derate linearly with 12 mW/K
above +70°C derate linearly with 8 mW/K
above +60°C derate linearly with 5.5 mW/K
750
500
400
mA
mW
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 input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1998 Apr 20
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Philips Semiconductors Product specification
V
V
V
V
voltage all out uts
V
voltage; BUS driver
V
voltage all out uts
V
voltage; BUS driver
V
74LV245Octal bus transceiver (3-State)
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions. V oltages are referenced to GND (ground = 0V).
LIMITS
SYMBOL P ARAMETER TEST CONDITIONS
VCC = 1.2V 0.9 0.9
IH
HIGH level Input
voltage
VCC = 2.0V 1.4 1.4
VCC = 2.7 to 3.6V 2.0 2.0
VCC = 4.5 to 5.5V 0.7V
VCC = 1.2V 0.3 0.3
IL
LOW level Input
voltage
VCC = 2.0V 0.6 0.6
VCC = 2.7 to 3.6V 0.8 0.8
VCC = 4.5 to 5.5 0.3V
VCC = 1.2V; VI = VIH or V
VCC = 2.0V; VI = VIH or V
OH
HIGH level output
;
V
VCC = 2.7V; VI = VIH or V
p
VCC = 3.0V; VI = VIH or V
VCC = 4.5V;VI = VIH or V
OH
HIGH level output
;
outputs
VCC = 3.0V;VI = VIH or V
VCC = 4.5V;VI = VIH or V
VCC = 1.2V; VI = VIH or V
VCC = 2.0V; VI = VIH or V
OL
LOW level output
;
V
VCC = 2.7V; VI = VIH or V
p
VCC = 3.0V;VI = VIH or V
VCC = 4.5V;VI = VIH or V
LOW level output
OL
I
I
I
OZ
I
CC
;
outputs
Input leakage
current
3-State output
OFF-state current
Quiescent supply
current; MSI
VCC = 3.0V;VI = VIH or V
VCC = 4.5V;VI = VIH or V
VCC = 5.5V; VI = VCC or GND 1.0 1.0 µA
VCC = 5.5V; VI = VIH or V
VO = VCC or GND
VCC = 5.5V; VI = VCC or GND; IO = 0 20.0 160 µA
IL;
IL;
IL;
IL;
IL;
IL;
IL;
IL;
IL;
IL;
IL;
IL;
IL;
IL;
IL;
Additional
CC
quiescent supply
current
VCC = 2.7V to 3.6V; VI = VCC –0.6V 500 850 µA
∆I
NOTE:
1. All typical values are measured at T
amb
= 25°C.
–IO = 100µA 1.2
–IO = 100µA 1.8 2.0 1.8
–IO = 100µA 2.5 2.7 2.5
–IO = 100µA 2.8 3.0 2.8
–IO = 100µA 4.3 4.5 4.3
–IO = 8mA 2.40 2.82 2.20
–IO = 16mA 3.60 4.20 3.50
IO = 100µA 0
IO = 100µA 0 0.2 0.2
IO = 100µA 0 0.2 0.2
IO = 100µA 0 0.2 0.2
IO = 100µA 0 0.2 0.2
IO = 8mA 0.20 0.40 0.50
IO = 16mA 0.35 0.55 0.65
-40°C to +85°C -40°C to +125°C
MIN TYP
CC
1
MAX MIN MAX
0.7V
CC
CC
5 10 µA
0.3V
UNIT
CC
V
V
1998 Apr 20
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Philips Semiconductors Product specification
CONDITION
y
Pro agation delay
B
A
3-State out ut enable time
OE
B
OE to B
n
74LV245Octal bus transceiver (3-State)
AC CHARACTERISTICS
GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL = 1KΩ
LIMITS
SYMBOL PARAMETER WAVEFORM
Propagation dela
t
PHL/tPLH
t
PZH/tPZL
An to Bn;
to
n
n
-
OE to An;
to
Figures 1
p
Figures 2
n
3-State output disable time
t
PHZ/tPLZ
OE to An;
OE
to B
Figures 2
NOTES:
1. Unless otherwise stated, all typical values are measured at T
2. Typical values are measured at V
3. Typical values are measured at V
= 3.3 V.
CC
= 5.0 V.
CC
VCC(V) MIN TYP1MAX MIN MAX
1.2 45 28
2.0 15 28 34
2.7 11 19 24
3.0 to 3.6 9
4.5 to 5.5 8
1.2 55
2.0 19 31 39
2.7 14 23 29
3.0 to 3.6 10
4.5 to 5.5 8.5
1.2 65
2.0 24 32 39
2.7 18 24 29
3.0 to 3.6 14
4.5 to 5.5 11.5
= 25°C
amb
–40 to +85 °C –40 to +125 °C
2
16 20
3
11 14
2
18 23
3
14 18
2
20 24
3
16 19
UNIT
ns
ns
ns
AC WAVEFORMS
VM = 1.5 V at VCC ≥ 2.7 V a n d ≤ 3.6 V
V
= 0.5 V × VCC at VCC < 2.7 V a n d ≥ 4.5 V
M
and VOH are the typical output voltage drop that occur with the output load.
V
OL
V
= VOL + 0.3 V at VCC ≥ 2.7 V and ≤ 3.6 V
X
V
= VOL + 0.1 ×V
X
V
= VOH – 0.3 V at VCC ≥ 2.7V and ≤ 3.6 V
Y
V
= VOH – 0.1 × VCC at VCC < 2.7 V and ≥ 4.5 V
Y
An, Bn INPUT
B
, An OUTPUT
n
(B
, An) propagation delays and the output transition times.
n
at V
< 2.7 V and ≥ 4.5 V
CC
V
M
V
M
t
CC
PHL
Figure 1. Input (An, Bn) to output
t
PLH
SV00627
V
I
OE INPUT
GND
V
CC
OUTPUT
LOW-to-OFF
OFF-to-LOW
V
V
OH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
OL
V
t
outputs
enabled
M
PLZ
t
PHZ
t
PZL
V
X
t
V
Y
outputs
disabled
Figure 2. 3-State enable and disable times.
PZH
V
M
V
M
SV00628
outputs
enabled
1998 Apr 20
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Philips Semiconductors Product specification
74LV245Octal bus transceiver (3-State)
TEST CIRCUIT
V
CC
PULSE
GENERATOR
V
I
D.U.T.
R
T
V
Test Circuit for Outputs
DEFINITIONS
RL = Load resistor
= Load capacitance includes jig and probe capacitiance.
C
L
RT = Termination resistance should be equal to Z
SWITCH POSITION
TEST
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
Open
2 * V
GND
S
1
CC
V
CC
< 2.7V V
2.7–3.6V
4.5V
O
C
L
of pulse generators.
OUT
V
I
CC
2.7V
V
CC
50 pF
2 * V
Open
GND
R
= 1k
L
R
= 1k
L
SV00896
CC
Figure 3. Load circuitry for switching times.
1998 Apr 20
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Philips Semiconductors Product specification
74LV245Octal bus transceiver (3-State)
DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1
1998 Apr 20
8
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Philips Semiconductors Product specification
74LV245Octal bus transceiver (3-State)
SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
1998 Apr 20
9
Page 10
Philips Semiconductors Product specification
74LV245Octal bus transceiver (3-State)
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm SOT339-1
1998 Apr 20
10
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Philips Semiconductors Product specification
74LV245Octal bus transceiver (3-State)
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1
1998 Apr 20
11
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Philips Semiconductors Product specification
74LV245Octal bus transceiver (3-State)
DEFINITIONS
Data Sheet Identification Product Status Definition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
Philips Semiconductors and Philips Electronics North America Corporation reserve 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. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.
LIFE SUPPORT APPLICA TIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
This data sheet contains the design target or goal specifications for product development. Specifications
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 changes 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.
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: 9397-750-04438
1998 Apr 20
12
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