74F40 Datasheet, PDF (1/3 Pages) NXP Semiconductors – Dual 4-input NAND buffer

Philips Semiconductors FAST Products
Dual 4-input NAND buffer
Product specification
74F40
TYPE
74F40
TYPICAL
PROPAGATION
DELAY
3.5ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
6mA
ORDERING INFORMATION
DESCRIPTION
14-pin plastic DIP
COMMERCIAL RANGE
V_CC = 5V ±10%, T_amb = 0°C to +70°C
N74F40N
14-pin plastic SO
N74F40D
PIN CONFIGURATION
D0a 1
D0b 2
NC 3
D0c 4
D0d 5
Q0 6
GND 7
14 V_CC
13 D1d
12 D1c
11 NC
10 D1b
9 D1a
8 Q1
SF00065
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
Dna, Dnb, Dnc, Dnd Data inputs
1.0/2.0
Q0, Q1
Data outputs
750/106.7
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOGIC DIAGRAM
1
D0a
2
D0b
4
D0c
5
D0d
V_CC = Pin 14
GND = Pin 7
NC = Pin 3, 11
9
D1a
10
D1b
12
D1c
13
D1d
6
Q0
8
Q1
SF00081
FUNCTION TABLE
INPUTS
Dna
Dnb
Dnc
L
X
X
X
L
X
X
X
L
X
X
X
H
H
H
NOTES:
1. H = High voltage level
2. L = Low voltage level
3. X = Don’t care
LOGIC SYMBOL
IEC/IEEE SYMBOL
LOAD VALUE HIGH/LOW
20µA/1.2mA
15mA/64mA
OUTPUT
Dnd
Qn
X
H
X
H
X
H
X
H
H
L
1 2 4 5 9 10 12 13
D0a D0b D0c D0d D1a D1b D1c D1d
1
&
2
6
4
5
Q0 Q1
9
10
12
68
V_CC = Pin 14
13
GND = Pin 7
NC = Pin 3, 11
SF00082
8
SF00083
April 11, 1989
1
853–0053 96314