Philips Semiconductors
Product specification
74LVT2241
3.3V Octal buffer/line driver with 30
W
series
termination resistors; 3-State
1
1996 May 29
853-1840 16867
FEATURES
Octal bus interface
3-State buffers
Output capability: +12mA/-12mA
TTL input and output switching levels
Input and output interface capability to systems at 5V supply
Bus-hold data inputs eliminate the need for external pull-up
resistors to hold unused inputs
Power-up 3-State
Live insertion/extraction permitted
No bus current loading when output is tied to 5V bus
Latch-up protection exceeds 500mA per JEDEC Std 17
ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model.
Outputs include series resistance of 30
, making external
termination resistors unnecessary.
DESCRIPTION
The 74LVT2241 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74LVT2241 device is an octal buffer that is ideal for driving bus
lines. The device features two Output Enables (1OE, 2OE), each
controlling four of the 3-State outputs.
The 74LVT2241 is designed with 30
series resistance in both the
High and Low states of the output. This design reduces the line
noise in applications such as memory address drivers, clock drivers
and bus receivers/transmitters.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
C; GND = 0V
TYPICAL
UNIT
t
PLH
t
PHL
Propagation delay
nAx to nYx
C
L
= 50pF;
V
CC
= 3.3V
3.0
3.3
ns
C
IN
Input capacitance
V
I
= 0V or 3.0V
4
pF
C
OUT
Output capacitance
Outputs disabled; V
O
= 0V or 3.0V
8
pF
I
CCZ
Total supply current
Outputs disabled; V
CC
= 3.6V
0.12
mA
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
20-Pin Plastic SOL
40
C to +85
C
74LVT2241 D
74LVT2241 D
SOT163-1
20-Pin Plastic SSOP Type II
40
C to +85
C
74LVT2241 DB
74LVT2241 DB
SOT339-1
20-Pin Plastic TSSOP Type I
40
C to +85
C
74LVT2241 PW
7LVT2241PW 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
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
1Y3
GND
2A2
1Y2
2A1
1Y1
2A0
1Y0
2OE
VCC
2A3
SA00038
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
2, 4, 6, 8
1A0 1A3
Data inputs
17, 15, 13, 11
2A0 2A3
Data inputs
18, 16, 14, 12
1Y0 1Y3
Data outputs
3, 5, 7, 9
2Y0 2Y3
Data outputs
1, 19
1OE, 2OE
Output enables
10
GND
Ground (0V)
20
V
CC
Positive supply voltage
Philips Semiconductors
Product specification
74LVT2241
3.3V Octal buffer/line driver with 30
W
series
termination resistors; 3-State
1996 May 29
2
LOGIC SYMBOL (IEEE/IEC)
1
2
18
4
16
6
14
8
12
19
17
3
15
5
13
7
11
9
EN
EN
SA00040
SCHEMATIC OF EACH OUTPUT
V
CC
V
CC
OUTPUT
22
20
SW00202
LOGIC SYMBOL
1OE
1
1A0
2
1A1
4
1A2
6
1A3
8
2OE
19
2A0
17
2A1
18
15
2A2
13
16
2A3
11
14
12
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
3
5
7
9
SA00039
FUNCTION TABLE
INPUTS
OUTPUTS
1OE
1An
2OE
2An
1Yn
2Yn
L
L
H
L
L
L
L
H
H
H
H
H
H
X
L
X
Z
Z
H = High voltage level
L
= Low voltage level
X = Don't care
Z = High impedance "off " state
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
V
CC
DC supply voltage
0.5 to +4.6
V
V
I
DC input voltage
3
0.5 to +7.0
V
V
OUT
DC output voltage
3
Output in Off or High state
0.5 to +7.0
V
I
OUT
DC output current
Output in Low state
128
mA
I
OUT
DC output current
Output in High state
64
mA
I
IK
DC input diode current
V
I
< 0
50
mA
I
OK
DC output diode current
V
O
< 0
50
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 negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
Philips Semiconductors
Product specification
74LVT2241
3.3V Octal buffer/line driver with 30
W
series
termination resistors; 3-State
1996 May 29
3
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
SYMBOL
PARAMETER
MIN
MAX
UNIT
V
CC
DC supply voltage
2.7
3.6
V
V
I
Input voltage
0
5.5
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
12
mA
I
OL
Low-level output current
12
mA
t/
v
Input transition rise or fall rate; outputs enabled
10
ns/V
T
amb
Operating free-air temperature range
40
+85
C
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= -40
C to +85
C
UNIT
MIN
TYP
1
MAX
V
IK
Input clamp voltage
V
CC
= 2.7V; I
I
= 18mA
0.9
1.2
V
V
OH
High-level output voltage
V
CC
= 3V; I
OH
= 12mA
2
2.2
V
V
OL
Low-level output voltage
V
CC
= 3V; I
OL
= 12mA
0.8
V
I
I
Input leakage current
V
CC
= 0 or 3.6V; V
I
= 5.5V
1
10
A
I
I
Input leakage current
V
CC
= 3.6V; V
I
= V
CC
or GND
Control pins
0.1
1
A
I
I
Input leakage current
V
CC
= 3.6V; V
I
= V
CC
Data pins
4
0.1
1
A
V
CC
= 3.6V; V
I
= 0
Data pins
4
1
-5
I
OFF
Output off current
V
CC
= 0V; V
I
or V
O
= 0 to 4.5V
1
100
A
I
HOLD
Bus hold current A inputs
V
CC
= 3.0V; V
I
= 0.8V
A inputs
75
150
A
I
HOLD
Bus hold current A inputs
V
CC
= 3.0V; V
I
= 2.0V
A inputs
-75
150
I
EX
Current into an output in the
High state when V
O
> V
CC
V
O
= 5.5V; V
CC
= 3.0V
60
125
A
I
PU/PD
Power up/down 3-State
output current
3
V
CC
=
1.2V; V
O
= 0.5V to V
CC
; V
I
= GND or V
CC
;
OE/OE = Don't care
1
100
A
I
OZH
3-State output High current
V
CC
= 3.6V; V
O
= 3.0V
1
5
A
I
OZL
3-State output Low current
V
CC
= 3.6V; V
O
= 0.5V
1
5
A
I
CCH
V
CC
= 3.6V; Outputs High, V
I
= GND or V
CC,
I
O =
0
0.12
0.19
I
CCL
Quiescent supply current
V
CC
= 3.6V; Outputs Low, V
I
= GND or V
CC,
I
O =
0
3
12
mA
I
CCZ
V
CC
= 3.6V; Outputs Disabled; V
I
= GND or V
CC,
I
O =
0
5
0.12
0.19
I
CC
Additional supply current
per input pin
2
V
CC
= 3.0 to 3.6V; One input at V
CC
-0.6V;
Other inputs at V
CC
or GND
0.1
0.25
mA
NOTES:
1. All typical values are at T
amb
= 25
C.
2. This is the increase in supply current for each input at V
CC
0.6V.
3. This parameter is valid for any V
CC
between 0V and 1.2V with a transition time of up to 10msec. From V
CC
= 1.2V to V
CC
= 3.3V
10% a
transition time of 100
sec is permitted. This parameter is valid for T
amb
= 25
C only.
4. Unused pins at V
CC
or GND
5. I
CCZ
is measured with outputs pulled to V
CC
or GND.
Philips Semiconductors
Product specification
74LVT2241
3.3V Octal buffer/line driver with 30
W
series
termination resistors; 3-State
1996 May 29
4
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF; R
L
= 500
;T
amb
= 40
C to +85
C.
LIMITS
SYMBOL
PARAMETER
WAVEFORM
T
amb
= 40
C to +85
C
V
CC
= +3.3V
0.3V
V
CC
= 2.7V
UNIT
MIN
TYP
1
MAX
MAX
t
PLH
t
PHL
Propagation delay
nAx to nYx
1
1
1
3.0
3.3
4.2
4.3
5.0
4.7
ns
t
PZH
t
PZL
Output enable time
to High and Low level,
1OE to 1Y
n
2
1
1
4.4
4.3
6.2
5.9
8.5
6.8
ns
t
PHZ
t
PLZ
Output disable time
from High and Low level,
1OE to 1Y
n
2
1
1.6
3.4
3.2
5.0
4.5
5.2
4.5
ns
t
PZH
t
PZL
Output enable time
to High and Low level,
2OE to 2Y
n
2
1
1
4.4
4.1
6.2
5.5
7.9
6.2
ns
t
PHZ
t
PLZ
Output disable time
from High and Low level,
2OE to 2Y
n
2
1
1
3.9
3.8
5.7
5.1
6.4
5.8
ns
NOTE:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25
C.
AC WAVEFORMS
V
M
= 1.5V, V
IN
= GND to 3.0V
An INPUT
VM
VM
Yn OUTPUT
VM
VM
tPLH
tPHL
SA00028
Waveform 1. Waveforms Showing the Input (An)
to Output (Yn) Propagation Delays
OE INPUT
VM
VM
tPZH
tPHZ
Yn OUTPUT
VOH
VM
VM
Yn OUTPUT
VOL
tPZL
tPLZ
3.5V
0V
VOL + 0.3V
VOH 0.3V
SA00041
OE INPUT
Waveform 2. Waveforms Showing the 3State Output
Enable and Disable Times
Philips Semiconductors
Product specification
74LVT2241
3.3V Octal buffer/line driver with 30
W
series
termination resistors; 3-State
1996 May 29
5
TEST CIRCUIT AND WAVEFORMS
VM
VM
tW
AMP (V)
NEGATIVE
PULSE
10%
10%
90%
90%
0V
VM
VM
tW
AMP (V)
POSITIVE
PULSE
90%
90%
10%
10%
0V
tTHL (tF)
tTLH (tR)
tTHL (tF)
tTLH (tR)
V
M
= 1.5V
Input Pulse Definition
DEFINITIONS
R
L
=
Load resistor; see AC CHARACTERISTICS for value.
C
L
=
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
R
T
= Termination resistance should be equal to Z
OUT
of
pulse generators.
INPUT PULSE REQUIREMENTS
FAMILY
74LVT
PULSE
GENERATOR
VIN
D.U.T.
VOUT
CL
VCC
RL
Test Circuit for 3-State Outputs
6.0V
R
T
RL
SV00092
Open
GND
SWITCH POSITION
TEST
SWITCH
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
Open
6V
GND
Amplitude
Rep. Rate
t
W
t
R
t
F
2.7V
v
10MHz
500ns
v
2.5ns
v
2.5ns
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