Philips 74LVT244APW, 74LVT244ADB, 74LVT244AD Datasheet
INTEGRATED CIRCUITS
74LVT244A
3.3V Octal buffer/line driver (3-State)
Product specification
Supersedes data of 1995 Nov 14
IC23 Data Handbook
1998 Feb 19
Philips Semiconductors Product specification
74L VT244A3.3V Octal buffer/line driver (3-State)
FEA TURES
•Octal bus interface
•3-State buffers
•Output capability: +64mA/-32mA
•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
QUICK REFERENCE DATA
SYMBOL PARAMETER
C
t
PLH
t
PHL
C
OUT
I
CCZ
IN
Propagation delay
nAx to nYx
Input capacitance VI = 0V or 3.0V 4 pF
Output capacitance Outputs disabled; VO = 0V or 3.0V 8 pF
Total supply current Outputs disabled; VCC = 3.6V 0.13 mA
CL = 50pF;
VCC = 3.3V
DESCRIPTION
The LVT244A is a high-performance BiCMOS product designed for
V
operation at 3.3V .
CC
This device is an octal buffer that is ideal for driving bus lines. The
device features two Output Enables (OE
four of the 3-State outputs.
CONDITIONS
T
= 25°C; GND = 0V
amb
1, OE2), each controlling
TYPICAL UNIT
2.5
2.6
ns
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
20-Pin Plastic SOL –40°C to +85°C 74LVT244A D 74LVT244A D SOT163-1
20-Pin Plastic SSOP Type II –40°C to +85°C 74LVT244A DB 74LVT244A DB SOT339-1
20-Pin Plastic TSSOP Type I –40°C to +85°C 74L VT244A PW 7LVT244APW DH SOT360-1
PIN CONFIGURATION
1
1OE
2
1A0
3
2Y3
4
1A1
5
2Y2
6
1A2
7
2Y1
8
1A3
9
2Y0 1Y3
10 11
GND
20
V
CC
2OE
19
1Y0
18
2A3
17
1Y1
16
2A2
15
1Y2
14
2A1
13
12
2A0
SV00010
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
2, 4, 6, 8 1A0 – 1A3 Data inputs
11. 13, 15, 17 2A0 – 2A3 Data inputs
18, 16, 14, 12 1Y0 – 1Y3 Data outputs
9, 7, 5, 3 2Y0 – 2Y3 Data outputs
1, 19 1OE, 2OE Output enables
10 GND Ground (0V)
20 V
CC
Positive supply voltage
1998 Feb 19 853-1745 18991
2
Philips Semiconductors Product specification
I
DC out ut current
mA
74LVT244A3.3V Octal buffer/line driver (3-State)
LOGIC SYMBOL
1A0
2
1A1
4
1A2
6
1A3
8
1OE
1
2A0
11
2A1
13
2A2
15
2A3
17
2OE
19
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
FUNCTION TABLE
INPUTS OUTPUTS
nOE1 nAx nYx
L L L
L H H
H X Z
H =High voltage level
L =Low voltage level
X = Don’t care
Z =High impedance ”off” state
LOGIC SYMBOL (IEEE/IEC)
18
16
14
12
9
7
5
3
SV00011
1
EN
2
4
6
8
19
EN
11 9
13 7
15 5
17 3
18
16
14
12
SV00012
ABSOLUTE MAXIMUM RA TINGS
SYMBOL
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1998 Feb 19
1, 2
PARAMETER CONDITIONS RATING UNIT
V
V
CC
V
OUT
OUT
I
IK
I
OK
T
stg
DC supply voltage –0.5 to +4.6 V
DC input voltage
I
DC output voltage
p
3
3
Output in Off or High state –0.5 to +7.0 V
–0.5 to +7.0 V
Output in Low state 128
Output in High state –64
DC input diode current VI < 0 –50 mA
DC output diode current VO < 0 –50 mA
Storage temperature range –65 to 150 °C
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 .
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3
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