INTEGRATED CIRCUITS
74F30240
Octal 30Ω line driver with enable, inverting (open collector)*
74F30244
Octal 30Ω line driver with enable, non-inverting (open collector)
* Discontinued part. Please see the Discontinued Product List.
Product specification |
1999 Jan 08 |
IC15 Data Handbook
m n r
Philips Semiconductors |
Product specification |
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30Ω line drivers |
74F30240*, 74F30244 |
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74F30240 Octal 30Ω line driver with enable, inverting (open collector) 74F30244 Octal 30Ω line driver with enable, non-inverting (open collecor)
FEATURES
•Ideal for driving transmission lines or backplanes. 160mA IOL ideal for applications with impedance as low as 30Ω
•Guaranteed threshold voltages on the incident wave while driving line as low as 30Ω
•High impedance NPN base inputs for reduced loading (20μA in High and Low states)
•Ideal for applications which require high output drive and minimal bus loading
DESCRIPTION
The 74F30240 and 74F30244 are high current open collector octal buffers composed of eight inverters. The 74F30240 has inverting data paths and the 74F30244 has non-inverting paths. Each device has eight inverters with two Output Enables (OE0, OE1), each controlling four outputs. Both drivers are designed to deal with the low-impedance transmission line effects found on printed circuit boards when fast edge rates are used. The 160mA IOL provides ample power to achieve TTL switching voltages on the incident wave.
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TYPICAL |
TYPICAL |
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Octal interface |
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TYPE |
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PROPAGATION |
SUPPLY CURRENT |
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•74F30240 inverting |
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DELAY |
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•74F30244 non-inverting |
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74F30240 |
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9.5ns |
62.5mA |
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•Open-Collector outputs sink 160mA |
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74F30244 |
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10.5ns |
69mA |
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•Multiple side pins are used for VCC and GND to reduce lead |
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inductance (improves speed and noise immunity) |
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•Available in 24-pin standard slim DIP (300mil) plastic, SOL or |
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CERDIP packages |
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ORDERING INFORMATION |
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COMMERCIAL RANGE |
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PACKAGE |
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DESCRIPTION |
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VCC = 5V ±10%, |
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DRAWING NUMBER |
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Tamb = 0°C to +70°C |
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24-pin Plastic Slim DIP (300mil) |
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N74F30244N |
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SOT222-1 |
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24±pin Plastic SOL1 |
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N74F30244D |
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SOT137-1 |
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NOTE:
1. Because of the high current sinking capability of these parts, the SOL package should only be used under the following conditions:
a.50% duty cycle,
AND
b.3/5 of remaining 50% driving ≤ 100mA (leaving the remaining 2/5 of the drive ≤ 160mA)
OR
c.use ≤ 450 linear feet per minute forced air or other thermal mounting techniques.
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
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PINS |
DESCRIPTION |
74F(U.L.) |
LOAD VALUE |
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HIGH/LOW |
HIGH/LOW |
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D0±D7 |
Data inputs |
1.0/0.033 |
20μA/20μA |
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Output Enable inputs (Active Low) |
1.0/0.033 |
20μA/20μA |
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OE0±OE1 |
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Data outputs (OC) for 74F30240 |
OC/266.7 |
OC/160mA |
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Q0±Q7 |
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Q0±Q7 |
Data outputs (OC) for 74F30244 |
OC/266.7 |
OC/160mA |
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NOTE: One (1.0) FAST unit load is defined as: 20μA in the High state and 0.6mA in the Low state. OC = Open Collector.
* Discontinued part. Please see the Discontinued Products List. |
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1999 Jan 08 |
2 |
853±1157 20619 |
Philips Semiconductors |
Product specification |
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30Ω line drivers |
74F30240*, 74F30244 |
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PIN CONFIGURATION ± 74F30240 |
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PIN CONFIGURATION ± 74F30244 |
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1 |
24 |
D0 |
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Q0 |
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Q0 |
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24 |
D0 |
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2 |
23 |
D1 |
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Q1 |
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Q1 |
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23 |
D1 |
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3 |
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D2 |
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Q2 |
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Q2 |
3 |
22 |
D2 |
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4 |
21 |
D3 |
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Q3 |
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Q3 |
4 |
21 |
D3 |
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GND |
5 |
20 |
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OE0 |
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GND |
5 |
20 |
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OE0 |
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GND |
6 |
19 |
VCC |
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GND |
6 |
19 |
VCC |
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GND |
7 |
18 |
VCC |
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GND |
7 |
18 |
VCC |
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GND |
8 |
17 |
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OE1 |
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GND |
8 |
17 |
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OE1 |
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9 |
16 |
D4 |
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Q4 |
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Q4 |
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16 |
D4 |
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10 |
15 |
D5 |
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Q5 |
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Q5 |
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15 |
D5 |
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11 |
14 |
D6 |
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Q6 |
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Q6 |
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14 |
D6 |
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12 |
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D7 |
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Q7 |
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Q7 |
12 |
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D7 |
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SF01387 |
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SF01388 |
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LOGIC SYMBOL ± 74F30240
24 23 22 21 16 15 14 13
D0 D1 D2 D3 D4 D5 D6 D7
20 OE0
17 OE1
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
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VCC = PIN 18, 19
GND = PIN 5, 6, 7, 8
SF01389
LOGIC SYMBOL ± 74F30244
24 23 22 21 16 15 14 13
D0 D1 D2 D3 D4 D5 D6 D7
20 
OE0
17 
OE1
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
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2 |
3 |
4 |
9 |
10 |
11 |
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VCC = PIN 18, 19
GND = PIN 5, 6, 7, 8
SF01390
IEC/IEEE SYMBOL ± 74F30240 |
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IEC/IEEE SYMBOL ± 74F30244 |
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20 |
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20 |
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EN1 |
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EN1 |
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17 |
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EN2 |
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EN2 |
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24 |
1 |
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24 |
1 |
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1 |
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23 |
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2 |
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21 |
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4 |
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16 |
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16 |
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14 |
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13 |
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12 |
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SF01391 |
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SF01392 |
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* Discontinued part. Please see the Discontinued Products List.
1999 Jan 08 |
3 |
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