74AHC245-Q100;
74AHCT245-Q100
Octal bus transceiver; 3-state
Rev. 1 — 21 March 2013
Product data sheet
1. General description
The 74AHC245-Q100; 74AHCT245-Q100 is a high-speed Si-gate CMOS device.
The 74AHC245-Q100; 74AHCT245-Q100 is an octal transceiver featuring non-inverting
3-state bus compatible outputs in both send and receive directions.
The 74AHC245-Q100; 74AHCT245-Q100 features an output enable input (OE), for easy
cascading, and a send and receive direction control input (DIR).
OE controls the outputs so that the buses are effectively isolated.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from
40 C
to +85
C
and from
40 C
to +125
C
Balanced propagation delays
All inputs have Schmitt-trigger actions
Inputs accept voltages higher than V
CC
Input levels:
For 74AHC245-Q100: CMOS level
For 74AHCT245-Q100: TTL level
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0
)
Multiple package options
Nexperia
74AHC245-Q100; 74AHCT245-Q100
Octal bus transceiver; 3-state
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74AHC245D-Q100
74AHCT245D-Q100
74AHC245PW-Q100
74AHCT245PW-Q100
74AHC245BQ-Q100
74AHCT245BQ-Q100
40 C
to +125
C
DHVQFN20
40 C
to +125
C
TSSOP20
40 C
to +125
C
Name
SO20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
plastic thin shrink small outline package; 20
leads; body width 4.4 mm
plastic dual in-line compatible thermal
enhanced very thin quad flat package;
no leads; 20 terminals; body
2.5
4.5
0.85 mm
Version
SOT163-1
SOT360-1
SOT764-1
Type number
4. Functional diagram
1
DIR
OE
19
2
A0
B0
18
3
A1
B1
17
19
B2
16
1
G3
3EN1
3EN2
4
A2
5
A3
B3
15
2
B4
14
3
4
B5
13
5
6
B6
12
7
8
B7
11
9
1
2
18
17
16
15
14
13
12
11
mna175
6
A4
7
A5
8
A6
9
A7
mna174
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
74AHC_AHCT245_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 21 March 2013
2 of 17
Nexperia
74AHC245-Q100; 74AHCT245-Q100
Octal bus transceiver; 3-state
5. Pinning information
5.1 Pinning
$+&4
$+&74
WHUPLQDO
LQGH[ DUHD
9
&&
2(
%
%
%
%
%
*1'
*1'
%
%
%
',5
$
9
&&
2(
%
%
%
%
%
%
%
%
DDD
$+&4
$+&74
',5
$
$
$
$
$
$
$
$
$
$
$
$
$
$
$
*1'
DDD
7UDQVSDUHQW WRS YLHZ
(1) This is not a supply pin. The substrate is attached to this
pad using conductive die attach material. There is no
electrical or mechanical requirement to solder this pad.
However, if it is soldered, the solder land should remain
floating or be connected to GND.
Fig 3.
Pin configuration SO20, TSSOP20
Fig 4.
Pin configuration DHVQFN20
5.2 Pin description
Table 2.
Symbol
DIR
A0, A1, A2, A3, A4, A5, A6, A7
GND
B7, B6, B5, B4, B3, B2, B1, B0
OE
V
CC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
10
11, 12, 13, 14, 15, 16, 17, 18
19
20
Description
direction control input
data input/output
ground (0 V)
data input/output
output enable input (active LOW)
supply voltage
74AHC_AHCT245_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 21 March 2013
3 of 17
Nexperia
74AHC245-Q100; 74AHCT245-Q100
Octal bus transceiver; 3-state
6. Functional description
Table 3.
Control
OE
L
L
H
[1]
Function table
[1]
Input/output
DIR
L
H
X
An
A=B
inputs
Z
Bn
inputs
B=A
Z
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
V
CC
V
I
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
[1]
[2]
Parameter
supply voltage
input voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
Conditions
Min
0.5
0.5
Max
+7.0
+7.0
-
+20
+25
+75
-
+150
500
Unit
V
V
mA
mA
mA
mA
mA
C
mW
V
I
<
0.5
V
V
O
<
0.5
V or V
O
> V
CC
+ 0.5 V
V
O
=
0.5
V to (V
CC
+ 0.5 V)
[1]
[1]
20
20
25
-
75
65
T
amb
=
40 C
to +125
C
[2]
-
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For SO20 packages: above 70
C
the value of P
tot
derates linearly at 8 mW/K.
For TSSOP20 packages: above 60
C
the value of P
tot
derates linearly at 5.5 mW/K.
For DHVQFN20 packages: above 60
C
the value of P
tot
derates linearly at 4.5 mW/K.
74AHC_AHCT245_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 21 March 2013
4 of 17
Nexperia
74AHC245-Q100; 74AHCT245-Q100
Octal bus transceiver; 3-state
8. Recommended operating conditions
Table 5.
Operating conditions
Conditions
Min
2.0
0
0
40
V
CC
= 3.0 V to 3.6 V
V
CC
= 4.5 V to 5.5 V
74AHCT245-Q100
V
CC
V
I
V
O
T
amb
t/V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
V
CC
= 4.5 V to 5.5 V
4.5
0
0
40
-
5.0
-
-
+25
-
5.5
5.5
V
CC
+125
20
V
V
V
C
ns/V
-
-
Typ
5.0
-
-
+25
-
-
Max
5.5
5.5
V
CC
+125
100
20
Unit
V
V
V
C
ns/V
ns/V
Symbol Parameter
74AHC245-Q100
V
CC
V
I
V
O
T
amb
t/V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
74AHC245-Q100
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V
V
CC
= 3.0 V
V
CC
= 5.5 V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V
V
CC
= 3.0 V
V
CC
= 5.5 V
V
OH
HIGH-level
V
I
= V
IH
or V
IL
output voltage
I
O
=
50 A;
V
CC
= 2.0 V
I
O
=
50 A;
V
CC
= 3.0 V
I
O
=
50 A;
V
CC
= 4.5 V
I
O
=
4.0
mA; V
CC
= 3.0 V
I
O
=
8.0
mA; V
CC
= 4.5 V
V
OL
LOW-level
V
I
= V
IH
or V
IL
output voltage
I
O
= 50
A;
V
CC
= 2.0 V
I
O
= 50
A;
V
CC
= 3.0 V
I
O
= 50
A;
V
CC
= 4.5 V
I
O
= 4.0 mA; V
CC
= 3.0 V
I
O
= 8.0 mA; V
CC
= 4.5 V
74AHC_AHCT245_Q100
Conditions
Min
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.58
3.94
-
-
-
-
-
25
C
Typ
-
-
-
-
-
-
2.0
3.0
4.5
-
-
0
0
0
-
-
Max
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.36
0.36
40 C
to +85
C 40 C
to +125
C
Unit
Min
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.48
3.80
-
-
-
-
-
Max
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.44
0.44
Min
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.40
3.70
-
-
-
-
-
©
Max
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.55
0.55
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 21 March 2013
5 of 17
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