74AHC_AHCT245_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 21 March 2013 3 of 17
NXP Semiconductors
74AHC245-Q100; 74AHCT245-Q100
Octal bus transceiver; 3-state
5. Pinning information
5.1 Pinning
5.2 Pin description
(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
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&&
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9
&&
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Table 2. Pin description
Symbol Pin Description
DIR 1 direction control input
A0, A1, A2, A3, A4, A5, A6, A7 2, 3, 4, 5, 6, 7, 8, 9 data input/output
GND 10 ground (0 V)
B7, B6, B5, B4, B3, B2, B1, B0 11, 12, 13, 14, 15, 16, 17, 18 data input/output
OE
19 output enable input (active LOW)
V
CC
20 supply voltage
74AHC_AHCT245_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 21 March 2013 4 of 17
NXP Semiconductors
74AHC245-Q100; 74AHCT245-Q100
Octal bus transceiver; 3-state
6. Functional description
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] 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.
Table 3. Function table
[1]
Control Input/output
OE DIR An Bn
LLA=Binputs
L H inputs B = A
HXZ Z
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
V
CC
supply voltage 0.5 +7.0 V
V
I
input voltage 0.5 +7.0 V
I
IK
input clamping current V
I
< 0.5 V
[1]
20 - mA
I
OK
output clamping current V
O
< 0.5 V or V
O
>V
CC
+0.5V
[1]
20 +20 mA
I
O
output current V
O
= 0.5 V to (V
CC
+ 0.5 V) 25 +25 mA
I
CC
supply current - +75 mA
I
GND
ground current 75 - mA
T
stg
storage temperature 65 +150 C
P
tot
total power dissipation T
amb
= 40 C to +125 C
[2]
- 500 mW
74AHC_AHCT245_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 21 March 2013 5 of 17
NXP Semiconductors
74AHC245-Q100; 74AHCT245-Q100
Octal bus transceiver; 3-state
8. Recommended operating conditions
9. Static characteristics
Table 5. Operating conditions
Symbol Parameter Conditions Min Typ Max Unit
74AHC245-Q100
V
CC
supply voltage 2.0 5.0 5.5 V
V
I
input voltage 0 - 5.5 V
V
O
output voltage 0 - V
CC
V
T
amb
ambient temperature 40 +25 +125 C
t/V input transition rise and fall rate V
CC
= 3.0 V to 3.6 V - - 100 ns/V
V
CC
= 4.5 V to 5.5 V - - 20 ns/V
74AHCT245-Q100
V
CC
supply voltage 4.5 5.0 5.5 V
V
I
input voltage 0 - 5.5 V
V
O
output voltage 0 - V
CC
V
T
amb
ambient temperature 40 +25 +125 C
t/V input transition rise and fall rate V
CC
= 4.5 V to 5.5 V - - 20 ns/V
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min Max Min Max
74AHC245-Q100
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V 1.5 - - 1.5 - 1.5 - V
V
CC
= 3.0 V 2.1 - - 2.1 - 2.1 - V
V
CC
= 5.5 V 3.85 - - 3.85 - 3.85 - V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V - - 0.5 - 0.5 - 0.5 V
V
CC
= 3.0 V - - 0.9 - 0.9 - 0.9 V
V
CC
= 5.5 V - - 1.65 - 1.65 - 1.65 V
V
OH
HIGH-level
output voltage
V
I
= V
IH
or V
IL
I
O
= 50 A; V
CC
= 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
I
O
= 50 A; V
CC
= 3.0 V 2.9 3.0 - 2.9 - 2.9 - V
I
O
= 50 A; V
CC
= 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
I
O
= 4.0 mA; V
CC
= 3.0 V 2.58 - - 2.48 - 2.40 - V
I
O
= 8.0 mA; V
CC
= 4.5 V 3.94 - - 3.80 - 3.70 - V
V
OL
LOW-level
output voltage
V
I
= V
IH
or V
IL
I
O
= 50 A; V
CC
= 2.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 50 A; V
CC
= 3.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 50 A; V
CC
= 4.5 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 4.0 mA; V
CC
= 3.0 V - - 0.36 - 0.44 - 0.55 V
I
O
= 8.0 mA; V
CC
= 4.5 V - - 0.36 - 0.44 - 0.55 V

74AHCT245PW-Q100J

Mfr. #:
Manufacturer:
Nexperia
Description:
Bus Transceivers 74AHCT245PW-Q100/TSSOP20/REEL
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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