74HCT646D NXP Semiconductors, 74HCT646D Datasheet - Page 6

• Manufacturer Part Number: 74HCT646D
• Description: Bus Transceivers OCTAL TRANSCEIVER/ REGISTER 3-S
• Manufacturer: NXP Semiconductors

Specifications of 74HCT646D

• Logic Type: CMOS
• Logic Family: HCT
• Number Of Channels Per Chip: 8
• Input Level: TTL
• Output Level: CMOS
• Output Type: 3-State
• High Level Output Current: - 6 mA
• Low Level Output Current: 6 mA
• Propagation Delay Time: 44 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 125 C
• Package / Case: SO-24
• Function: Bus Transceiver / Register
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Circuits: 1
• Polarity: Non-Inverting
• Lead Free Status / Rohs Status: Details
• Other names: 74HCT646D,652

Philips Semiconductors
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
Output capability: bus driver
I
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
September 1993
CC
t
t
t
t
t
t
t
t
t
t
t
f
SYMBOL
PHL
PHL
PHL
PZH
PHZ
PZH
PHZ
THL
W
su
h
max
Octal bus transceiver/register; 3-state
category: MSI
/ t
/ t
/ t
/ t
/ t
/ t
/ t
/ t
TLH
PLH
PLH
PLH
PZL
PLZ
PZL
PLZ
propagation delay
propagation delay
propagation delay
3-state output enable
time
3-state output disable
time OE to A
3-state output enable
time DIR to A
3-state output disable
time DIR to A
output transition time
clock pulse width
set-up time
hold time
maximum clock pulse
r
A
CP
S
OE to A
HIGH or LOW
CP
A
A
frequency
= t
n
AB
n
n
,B
,B
,B
f
AB
AB
,S
= 6 ns; C
PARAMETER
n
n
n
,CP
BA
or CP
to CP
to B
to CP
n
to B
,B
BA
n
n
,A
AB
BA
AB
to B
n
n
L
n
n
n
,A
,B
,CP
,CP
,B
,B
= 50 pF
n
n
n
n
n
,A
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
BA
BA
n
80
16
14
60
12
10
35
7
6
6.0
30
35
min. typ. max. min. max. min. max.
39
14
11
66
24
19
55
20
16
47
17
14
58
21
17
50
18
14
50
18
14
5
4
25
9
7
6
2
2
21
63
75
14
+25
3
1
1
135
27
23
220
44
37
190
38
32
175
35
30
175
35
30
175
35
30
175
35
30
60
12
10
T
6
amb
100
24
20
75
15
13
45
9
8
4.8
24
28
74HC
40 to +85
( C)
170
34
29
275
55
47
240
48
41
220
44
37
220
44
37
220
44
37
220
44
37
75
15
13
120
24
20
90
18
15
55
11
9
4.0
20
24
40 to +125
205
41
35
330
66
56
285
57
48
265
53
45
265
53
45
265
53
45
265
53
45
90
18
15
.
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
UNIT
74HC/HCT646
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
V
(V)
TEST CONDITIONS
CC
Product specification
Fig.6
Fig.7
Fig.8
Fig.9
Fig.9
Fig.10
Fig.10
Fig.7
Fig.7
Fig.7
Fig.7
Fig.6 and Fig.8
WAVEFORMS