Philips Semiconductors
Product specification
3.3V Octal buffer/line driver with 30W series
termination resistors; 3-State
74LVT2241
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
•
•
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 30Ω, making external
termination resistors unnecessary.
resistors to hold unused inputs
Power-up 3-State
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 30Ω 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
t
PLH
t
PHL
C
IN
C
OUT
I
CCZ
PARAMETER
Propagation delay
nAx to nYx
Input capacitance
Output capacitance
Total supply current
CONDITIONS
T
amb
= 25°C; GND = 0V
C
L
= 50pF;
V
CC
= 3.3V
V
I
= 0V or 3.0V
Outputs disabled; V
O
= 0V or 3.0V
Outputs disabled; V
CC
= 3.6V
TYPICAL
3.0
3.3
4
8
0.12
UNIT
ns
pF
pF
mA
ORDERING INFORMATION
PACKAGES
20-Pin Plastic SOL
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
TEMPERATURE RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH AMERICA
74LVT2241 D
74LVT2241 DB
74LVT2241 PW
NORTH AMERICA
74LVT2241 D
74LVT2241 DB
7LVT2241PW DH
DWG NUMBER
SOT163-1
SOT339-1
SOT360-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN NUMBER
2, 4, 6, 8
SYMBOL
1A0 – 1A3
2A0 – 2A3
1Y0 – 1Y3
2Y0 – 2Y3
1OE, 2OE
GND
V
CC
NAME AND FUNCTION
Data inputs
Data inputs
Data outputs
Data outputs
Output enables
Ground (0V)
Positive supply voltage
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
V
CC
2OE
1Y0
2A0
1Y1
2A1
1Y2
2A2
1Y3
2A3
17, 15, 13, 11
18, 16, 14, 12
3, 5, 7, 9
1, 19
10
20
GND 10
SA00038
1996 May 29
1
853-1840 16867
Philips Semiconductors
Product specification
3.3V Octal buffer/line driver with 30W series
termination resistors; 3-State
74LVT2241
LOGIC SYMBOL (IEEE/IEC)
1
EN
2
4
6
8
18
16
LOGIC SYMBOL
2
4
6
8
14
12
1
17
1OE
2A0
2A1
2A2
2A3
2OE
2Y0
2Y1
2Y2
2Y3
1A0
1A1
1A2
1A3
1Y0
1Y1
1Y2
1Y3
18
16
14
12
3
5
7
9
19
EN
17
15
13
11
3
5
7
19
9
15
13
11
SA00039
SA00040
FUNCTION TABLE
SCHEMATIC OF EACH OUTPUT
V
CC
V
CC
INPUTS
1OE
L
L
H
1An
L
H
X
2OE
H
H
L
2An
L
H
X
OUTPUTS
1Yn
L
H
Z
2Yn
L
H
Z
22Ω
OUTPUT
20Ω
H
L
X
Z
= High voltage level
= Low voltage level
= Don’t care
= High impedance “off ” state
SW00202
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
V
CC
V
I
V
OUT
I
OUT
I
IK
I
OK
T
stg
PARAMETER
DC supply voltage
DC input voltage
3
DC output voltage
3
DC output current
Output in High state
DC input diode current
DC output diode current
Storage temperature range
V
I
< 0
V
O
< 0
–64
–50
–50
–65 to 150
mA
mA
°C
Output in Off or High state
Output in Low state
CONDITIONS
RATING
–0.5 to +4.6
–0.5 to +7.0
–0.5 to +7.0
128
mA
UNIT
V
V
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 negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
1996 May 29
2
Philips Semiconductors
Product specification
3.3V Octal buffer/line driver with 30W series
termination resistors; 3-State
74LVT2241
RECOMMENDED OPERATING CONDITIONS
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; outputs enabled
Operating free-air temperature range
–40
PARAMETER
LIMITS
MIN
2.7
0
2.0
0.8
–12
12
10
+85
MAX
3.6
5.5
UNIT
V
V
V
V
mA
mA
ns/V
°C
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
V
IK
V
OH
V
OL
PARAMETER
Input clamp voltage
High-level output voltage
Low-level output voltage
TEST CONDITIONS
V
CC
= 2.7V; I
I
= –18mA
V
CC
= 3V; I
OH
= –12mA
V
CC
= 3V; I
OL
= 12mA
V
CC
= 0 or 3.6V; V
I
= 5.5V
I
I
Input leakage current
V
CC
= 3.6V; V
I
= V
CC
or GND
V
CC
= 3.6V; V
I
= V
CC
V
CC
= 3.6V; V
I
= 0
I
OFF
I
HOLD
I
EX
I
PU/PD
I
OZH
I
OZL
I
CCH
I
CCL
I
CCZ
∆I
CC
Additional supply current
per input pin
2
Quiescent supply current
Output off current
Bus hold current A inputs
Current into an output in the
High state when V
O
> V
CC
Power up/down 3-State
output current
3
3-State output High current
3-State output Low current
V
CC
= 0V; V
I
or V
O
= 0 to 4.5V
V
CC
= 3.0V; V
I
= 0.8V
V
CC
= 3.0V; V
I
= 2.0V
V
O
= 5.5V; V
CC
= 3.0V
V
CC
=
≤
1.2V; V
O
= 0.5V to V
CC
; V
I
= GND or V
CC
;
OE/OE = Don’t care
V
CC
= 3.6V; V
O
= 3.0V
V
CC
= 3.6V; V
O
= 0.5V
V
CC
= 3.6V; Outputs High, V
I
= GND or V
CC,
I
O =
0
V
CC
= 3.6V; Outputs Low, V
I
= GND or V
CC,
I
O =
0
V
CC
= 3.6V; Outputs Disabled; V
I
= GND or V
CC,
I
O =
V
CC
= 3.0 to 3.6V; One input at V
CC
-0.6V;
Other inputs at V
CC
or GND
0
5
A inputs
75
-75
Control pins
Data pins
4
1
±0.1
0.1
–1
1
150
–150
60
±1
1
–1
0.12
3
0.12
0.1
125
±100
5
–5
0.19
12
0.19
0.25
mA
mA
µA
µA
µA
µA
2
T
amb
= -40°C to +85°C
MIN
TYP
1
0.9
2.2
0.8
10
±1
1
-5
±100
µA
µA
µA
MAX
–1.2
V
V
V
UNIT
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 100µsec 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.
1996 May 29
3
Philips Semiconductors
Product specification
3.3V Octal buffer/line driver with 30W series
termination resistors; 3-State
74LVT2241
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF; R
L
= 500Ω;T
amb
= –40°C to +85°C.
LIMITS
SYMBOL
PARAMETER
WAVEFORM
T
amb
= –40°C to +85°C
V
CC
= +3.3V
±0.3V
MIN
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
nAx to nYx
Output enable time
to High and Low level,
1OE to 1Y
n
Output disable time
from High and Low level,
1OE to 1Y
n
Output enable time
to High and Low level,
2OE to 2Y
n
Output disable time
from High and Low level,
2OE to 2Y
n
1
1
1
1
1
1
1.6
1
1
1
1
TYP
1
3.0
3.3
4.4
4.3
3.4
3.2
4.4
4.1
3.9
3.8
MAX
4.2
4.3
6.2
5.9
5.0
4.5
6.2
5.5
5.7
5.1
V
CC
= 2.7V
MAX
5.0
4.7
8.5
6.8
5.2
4.5
7.9
6.2
6.4
5.8
ns
UNIT
2
ns
2
ns
2
ns
2
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
OE INPUT
V
M
An INPUT
t
PZL
t
PLH
t
PHL
Yn OUTPUT
V
M
Yn OUTPUT
V
M
t
PZH
t
PHZ
V
M
t
PLZ
3.5V
V
M
OE INPUT
V
M
V
M
V
OL
+ 0.3V
V
OL
V
OH
V
OH
– 0.3V
SA00028
Yn OUTPUT
Waveform 1. Waveforms Showing the Input (An)
to Output (Yn) Propagation Delays
V
M
0V
SA00041
Waveform 2. Waveforms Showing the 3–State Output
Enable and Disable Times
1996 May 29
4
Philips Semiconductors
Product specification
3.3V Octal buffer/line driver with 30W series
termination resistors; 3-State
74LVT2241
TEST CIRCUIT AND WAVEFORMS
V
CC
6.0V
Open
V
IN
PULSE
GENERATOR
R
T
D.U.T.
C
L
R
L
t
THL
(t
F
)
t
TLH
(t
R
)
V
OUT
R
L
GND
t
W
V
M
10%
10%
0V
t
TLH
(t
R
)
t
THL
(t
F
)
90%
V
M
10%
t
W
0V
AMP (V)
V
M
AMP (V)
90%
NEGATIVE
PULSE
90%
Test Circuit for 3-State Outputs
90%
POSITIVE
PULSE
10%
V
M
SWITCH POSITION
TEST
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
SWITCH
Open
6V
GND
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
Amplitude
74LVT
2.7V
Rep. Rate
v10MHz
t
W
t
R
t
F
500ns
v2.5ns v2.5ns
SV00092
1996 May 29
5
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