MC74VHCT259A Datasheet, PDF (2/9 Pages) ON Semiconductor – 8−Bit Addressable Latch/1−of−8 Decoder CMOS Logic Level Shifter with LSTTL−Compatible Inputs

MC74VHCT259A
A0 ¹
ADDRESS
INPUTS
A1
2
A2 ³
DATA IN ¹³
4 _Q0
5 _Q1
6 _Q2
7 _Q3
9 _Q4
10 _Q5
11 _Q6
12 _Q7
NONINVERTING
OUTPUTS
RESET ¹⁵
ENABLE ¹⁴
PIN 16 = V_CC
PIN 8 = GND
Figure 1. Logic Diagram
A0 1
A1 2
A2 3
Q0 4
Q1 5
Q2 6
Q3 7
GND 8
16 V_CC
15 RESET
14 _ENABLE
13 DATA IN
12 Q7
11 Q6
10 Q5
9 Q4
Figure 2. Pin Assignment
A0 ¹
A1 ²
A2 ³
13
14
15
BIN/OCT
1
0
4
Q0
2
1
5
Q1
4
2
6
Q2
3
7
Q3
4
8
Q4
ID
5
10
Q5
EN
6
11
Q6
R
7
12
Q7
A0 ¹
A1 ²
A2 ³
13
14
15
DMUX
0
0
4
Q0
G
0
7
2
1
2
5
Q1
6
Q2
3
7
Q3
4
8
Q4
ID
5
10
Q5
EN
6
11
Q6
R
7
12
Q7
Figure 3. IEC Logic Symbol
MODE SELECTION TABLE
Enable Reset
Mode
L
H
Addressable Latch
H
H
Memory
L
L
8−Line Demultiplexer
H
L
Reset
LATCH SELECTION TABLE
Address Inputs
CBA
Latch
Addressed
LLL
Q0
L LH
Q1
LHL
Q2
L HH
Q3
HL L
Q4
HLH
Q5
HH L
Q6
HHH
Q7
http://onsemi.com
2