Philips Semiconductor ABT244DB

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Technical Document


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74ABT244
Octal buffer/line driver (3-State)
Product specification
Supersedes data of 1995 Sep 06
1998 Jan 16
INTEGRATED CIRCUITS
IC23 Data Handbook
Philips Semiconductors Product specification
74ABT244Octal buffer/line driver (3-State)
2
1998 Jan 16 853–1444 18867
FEATURES
Octal bus interface
3-State buffers
Output capability: +64mA/–32mA
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
Power-up 3-State
Live insertion capacity
Inputs are disabled during 3-State mode
DESCRIPTION
The 74ABT244 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT244 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.
QUICK REFERENCE DATA
SYMBOL PARAMETER
CONDITIONS
T
amb
= 25°C; GND = 0V
TYPICAL UNIT
t
PLH
t
PHL
Propagation delay
An to Yn
C
L
= 50pF; V
CC
= 5V 2.9 ns
C
IN
Input capacitance V
I
= 0V or V
CC
4 pF
C
OUT
Output capacitance Outputs disabled; V
O
= 0V or V
CC
7 pF
I
CCZ
Total supply current Outputs disabled; V
CC
=5.5V 50 µA
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
20-Pin Plastic DIP –40°C to +85°C 74ABT244 N 74ABT244 N SOT146-1
20-Pin plastic SO –40°C to +85°C 74ABT244 D 74ABT244 D SOT163-1
20-Pin Plastic SSOP Type II –40°C to +85°C 74ABT244 DB 74ABT244 DB SOT339-1
20-Pin Plastic TSSOP Type I –40°C to +85°C 74ABT244 PW 74ABT244PW 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
V
CC
2A3
SA00148
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
Philips Semiconductors Product specification
74ABT244Octal buffer/line driver (3-State)
1998 Jan 16
3
LOGIC SYMBOL
1OE
1
1A0
2
1A1
4
1A2
6
1A3
8
2OE
19
2A3
11
2A2
18
13
2A1
15
16
2A0
17
14
12
1Y0
1Y1
1Y2
1Y3
2Y3
2Y2
2Y1
2Y0
9
7
5
3
SA00149
LOGIC SYMBOL (IEEE/IEC)
1
2
18
4
16
6
14
8
12
19
11 9
13 7
15 5
17
3
EN
EN
SA00150
FUNCTION TABLE
INPUTS OUTPUTS
1OE 1An 2OE 2An 1Yn 2Yn
L L L L L L
L H L H H H
H X H 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 +7.0 V
I
IK
DC input diode current V
I
< 0 –18 mA
V
I
DC input voltage
3
–1.2 to +7.0 V
I
OK
DC output diode current V
O
< 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.
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