Philips Semiconductors
Product specification
Octal inverting buffer (3-State)
74ABT240
FEATURES
DESCRIPTION
• 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
The 74ABT240 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT240 device is an octal inverting buffer that is ideal for
driving bus lines. The device features two Output Enables (1OE,
2OE), each controlling four of the 3-State outputs.
and 200 V per Machine Model
• Power-up 3-State
• Live insertion/extraction permitted
QUICK REFERENCE DATA
SYMBOL
CONDITIONS
Tamb = 25°C; GND = 0V
PARAMETER
TYPICAL
UNIT
3.1
ns
tPLH
tPHL
Propagation delay
nAx to nYx
CL = 50pF; VCC = 5V
CIN
Input capacitance
VI = 0V or VCC
4
pF
COUT
Output capacitance
Outputs disabled; VO = 0V or VCC
7
pF
ICCZ
Total supply current
Outputs disabled; VCC =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
74ABT240 N
74ABT240 N
SOT146-1
20-Pin plastic SO
–40°C to +85°C
74ABT240 D
74ABT240 D
SOT163-1
20-Pin Plastic SSOP Type II
–40°C to +85°C
74ABT240 DB
74ABT240 DB
SOT339-1
20-Pin Plastic TSSOP Type I
–40°C to +85°C
74ABT240 PW
74ABT240PW DH
SOT360-1
PIN DESCRIPTION
PIN CONFIGURATION
PIN
NUMBER
SYMBOL
2, 4, 6, 8
1A0 – 1A3
Data inputs
11, 13, 15,
17
2A0 – 2A3
Data inputs
NAME AND FUNCTION
1OE
1
20
VCC
1A0
2
19
2OE
2Y0
3
18
1Y0
1A1
4
17
2A0
18, 16, 14,
12
1Y0 – 1Y3
9, 7, 5, 3
2Y0 – 2Y3
Data outputs
2Y1
5
16
1Y1
1, 19
1OE, 2OE
Output enables
1A2
6
15
2A1
10
GND
Ground (0V)
2Y2
7
14
1Y2
20
VCC
Positive supply voltage
1A3
8
13
2A2
2Y3
9
12
1Y3
11
2A3
Data outputs
GND 10
SA00034
1996 Sep 10
2
853–1608 17274
Philips Semiconductors
Product specification
Octal inverting buffer (3-State)
74ABT240
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
UNIT
Min
VCC
4.5
5.5
V
0
DC supply voltage
Max
VCC
V
VI
Input voltage
VIH
High-level input voltage
VIL
Low-level Input voltage
0.8
V
IOH
High-level output current
–32
mA
IOL
Low-level output current
64
mA
0
10
ns/V
–40
+85
°C
2.0
∆t/∆v
Input transition rise or fall rate
Tamb
Operating free-air temperature range
V
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Min
VIK
Input clamp voltage
Tamb = –40°C
to +85°C
Tamb = +25°C
Max
–0.9
VCC = 4.5V; IIK = –18mA
Typ
Min
–1.2
UNIT
Max
–1.2
V
VCC = 4.5V; IOH = –3mA; VI = VIL or VIH
VOL
High-level output voltage
2.9
2.5
V
VCC = 5.0V; IOH = –3mA; VI = VIL or VIH
3.0
3.4
3.0
V
VCC = 4.5V; IOH = –32mA; VI = VIL or VIH
VOH
2.5
2.0
2.4
2.0
V
Low-level output voltage
VCC = 4.5V; IOL = 64mA; VI = VIL or VIH
0.42
0.55
0.55
V
Input leakage current
VCC = 5.5V; VI = GND or 5.5V
±0.01
±1.0
±1.0
µA
Power-off leakage current
VCC = 0.0V; VI or VO ≤ 4.5V;
±5.0
±100
±100
µA
Power-up/down 3-state
output current3
VCC = 2.1V; VO = 0.5V; VI = GND or VCC;
V OE = Don’t care
±5.0
±50
±50
µA
IOZH
3-State output High current
VCC = 5.5V; VO = 2.7V; VI = VIL or VIH
5.0
50
50
µA
IOZL
3-State output Low current
VCC = 5.5V; VO = 0.5V; VI = VIL or VIH
–5.0
–50
–50
µA
ICEX
Output High leakage current
VCC = 5.5V; VO = 5.5V; VI = GND or VCC
5.0
50
50
µA
–100
–180
–180
mA
VCC = 5.5V; Outputs High, VI = GND or VCC
50
250
250
µA
VCC = 5.5V; Outputs Low, VI = GND or VCC
24
30
30
mA
VCC = 5.5V; Outputs 3-State;
VI = GND or VCC
50
250
250
µA
Outputs 3-State, one input at 3.4V, other
inputs at VCC or GND; VCC = 5.5V
0.5
1.5
1.5
mA
II
IOFF
IPU/IPD
IO
Output
current1
ICCH
ICCL
Quiescent supply current
ICCZ
∆ICC
Additional supply current per
input pin2
VCC = 5.5V; VO = 2.5V
–50
–50
NOTES:
1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
2. This is the increase in supply current for each input at 3.4V.
3. This parameter is valid for any VCC between 0V and 2.1V, with a transition time of up to 10msec. From VCC = 2.1V to VCC 5V ± 10% a
transition time of up to 100µsec is permitted.
1996 Sep 10
4
