74F540 Philips, 74F540 Datasheet - Page 2

• Manufacturer Part Number: 74F540
• Description: Octal inverter buffer 3- State
• Manufacturer: Philips

Philips Semiconductors
FEATURES
DESCRIPTION
The 74F540 and 74F541 are octal buffers that are ideal for driving
bus lines or buffer memory address registers. The outputs are
capable of sinking 64mA and sourcing up to 15mA, producing very
good capacitive drive characteristics. The devices feature input and
outputs on opposite sides of the package to facilitate printed circuit
board layout.
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
NOTE: One (1.0) FAST Unit Load is defined as: 20 A in the High state and 0.6mA in the Low state.
PIN CONFIGURATION – 74F540
1990 Jan 08
I0–I7
OE0, OE1
Y0 - Y7
Y0 - Y7
High impedance NPN base inputs for reduced loading
(20 A in High and Low states)
Low power, light bus loading
Functionally similar to the 74F240 and 74F241
Provides ideal interface and increases fan-out of MOS
microprocessors
Efficient pinout to facilitate PC board layout
Octal bus interface
3-State buffer outputs sink 64mA
15mA source current
Buffers
74F540 Octal Inverter Buffer (3-State)
74F541 Octal Buffer (3-State)
PINS
GND
OE0
I0
I1
I4
I6
I7
I2
I3
I5
Data inputs
3-State output enable inputs (active Low)
Data outputs (74F541)
Data outputs (74F540)
10
1
2
3
4
5
6
7
8
9
SF01060
20
19
18
17
16
15
14
13
12
11
V
OE1
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
CC
DESCRIPTION
2
ORDERING INFORMATION
PIN CONFIGURATION – 74F541
20-Pin Plastic DIP
20-Pin Plastic SOL
74F540
74F541
TYPE
DESCRIPTION
PROPAGATION DELAY
GND
OE0
TYPICAL
I0
I1
I2
I3
I4
I6
I7
I5
3.5ns
5.5ns
COMMERCIAL RANGE
10
N74F540D, N74F541D
1
2
3
4
5
6
7
8
9
N74F540, N74F541N
T
HIGH/LOW
750/106.7
750/106.7
74F(U.L.)
amb
1.0/0.033
1.0/0.033
V
CC
= 0 C to +70 C
= 5V 10%,
74F540, 74F541
SF01021
20
19
18
17
16
15
14
13
12
11
TYPICAL SUPPLY
Product specification
V
OE1
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
CC
CURRENT
LOAD VALUE
(TOTAL)
853–0068 98494
15mA/64mA
15mA/64mA
HIGH/LOW
58mA
55mA
20 A/20 A
20 A/20 A
SOT146-1
SOT163-1
PKG DWG #