74LVC2245A Просмотр технического описания (PDF) - NXP Semiconductors.
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74LVC2245A
NXP Semiconductors.
74LVC2245A Datasheet PDF : 16 Pages
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NXP Semiconductors
74LVC2245A
Octal transceiver with direction pin, 30 series termination resistors
5. Pinning information
5.1 Pinning
74LVC2245A
DIR 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
20 VCC
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
001aad041
Fig 3. Pin configuration SO20 and (T)SSOP20
terminal 1
index area
74LVC2245A
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND(1)
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
001aad042
Transparent top view
(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 4. Pin configuration DHVQFN20
5.2 Pin description
Table 2.
Symbol
DIR
A[0:7]
GND
B[0:7]
OE
VCC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
10
18, 17, 16, 15, 14, 13, 12, 11
19
20
6. Functional description
Description
direction control input
data input/output
ground (0 V)
data input/output
output enable input (active LOW)
supply voltage
Table 3.
Input
OE
LOW
LOW
HIGH
Functional table
DIR
LOW
HIGH
don’t care
Input/output
An
A=B
input
Z (high-impedance OFF-state)
Bn
input
B=A
Z (high-impedance OFF-state)
74LVC2245A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 4 November 2011
© NXP B.V. 2011. All rights reserved.
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