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74AVC8T245 Folha de dados(PDF) 4 Page - NXP Semiconductors

Nome de Peças 74AVC8T245
Descrição Electrónicos  8-bit dual supply translating transceiver with configurable voltage translation; 3-state
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Fabricante Electrônico  NXP [NXP Semiconductors]
Página de início  http://www.nxp.com
Logo NXP - NXP Semiconductors

74AVC8T245 Folha de dados(HTML) 4 Page - NXP Semiconductors

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74AVC8T245_2
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 28 April 2009
4 of 23
NXP Semiconductors
74AVC8T245
8-bit dual supply translating transceiver; 3-state
5.2 Pin description
[1]
All GND pins must be connected to ground (0 V).
6.
Functional description
[1]
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
[2]
The An, DIR and OE input circuit is referenced to VCC(A); The Bn input circuit is referenced to VCC(B).
[3]
If at least one of VCC(A) or VCC(B) is at GND level, the device goes into suspend mode.
7.
Limiting values
Table 2.
Pin description
Symbol
Pin
Description
VCC(A)
1
supply voltage A (An, OE and DIR inputs are referenced to VCC(A))
DIR
2
direction control
A1 to A8
3, 4, 5, 6, 7, 8, 9, 10
data input or output
GND[1]
11
ground (0 V)
GND[1]
12
ground (0 V)
GND[1]
13
ground (0 V)
B1 to B8
21, 20, 19, 18, 17, 16, 15, 14 data input or output
OE
22
output enable input (active LOW)
VCC(B)
23
supply voltage B (Bn inputs are referenced to VCC(B))
VCC(B)
24
supply voltage B (Bn inputs are referenced to VCC(B))
Table 3.
Function table[1]
Supply voltage
Input
Input/output[3]
VCC(A), VCC(B)
OE[2]
DIR[2]
An[2]
Bn
0.8 V to 3.6 V
L
L
An = Bn
input
0.8 V to 3.6 V
L
H
input
Bn = An
0.8 V to 3.6 V
H
X
Z
Z
GND[3]
XXZ
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
VCC(A)
supply voltage A
−0.5
+4.6
V
VCC(B)
supply voltage B
−0.5
+4.6
V
IIK
input clamping current
VI <0V
−50
-
mA
VI
input voltage
[1]
−0.5
+4.6
V
IOK
output clamping current
VO <0V
−50
-
mA
VO
output voltage
Active mode
[1][2][3]
−0.5
VCCO + 0.5
V
Suspend or 3-state mode
[1]
−0.5
+4.6
V
IO
output current
VO =0Vto VCC
-
±50
mA
ICC
supply current
ICC(A) or ICC(B)
-
100
mA


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