DataSheet.es    


PDF 74AVCH20T245 Data sheet ( Hoja de datos )

Número de pieza 74AVCH20T245
Descripción 20-bit Dual Supply Translating Transceiver
Fabricantes NXP Semiconductors　
Logotipo NXP Semiconductors Logotipo



Hay una vista previa y un enlace de descarga de 74AVCH20T245 (archivo pdf) en la parte inferior de esta página.


Total 25 Páginas

No Preview Available ! 74AVCH20T245 Hoja de datos, Descripción, Manual

74AVCH20T245
20-bit dual supply translating transceiver with configurable
voltage translation; 3-state
Rev. 01 — 13 January 2010
Product data sheet
1. General description
The 74AVCH20T245 is a 20-bit, dual supply transceiver that enables bi-directional voltage
level translation. The device can be used as two 10-bit transceivers or as a single 20-bit
transceiver. It features four 10-bit input-output ports (1An, 1Bn and 2An, 2Bn), two output
enable inputs (nOE), two direction inputs (DIR) and dual supplies (VCC(A) and VCC(B)).
VCC(A) and VCC(B) can be independently supplied at any voltage between 0.8 V and 3.6 V
making the device suitable for bi-directional voltage level translation between any of the
low voltage nodes: 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V and 3.3 V. The 1An and 2An ports, nOE
and nDIR are referenced to VCC(A), the 1Bn and 2Bn ports are referenced to VCC(B). A
HIGH on a 1DIR allows transmission from 1An to 1Bn and a LOW on 1DIR allows
transmission from 1Bn to 1An. A HIGH on nOE causes the outputs to assume a HIGH
impedance OFF-state.
The device is fully specified for partial power-down applications using IOFF. The IOFF
circuitry disables the output, preventing any damaging backflow current through the
device when it is powered down. In suspend mode when either VCC(A) or VCC(B) are at
GND level, all output ports will assume a high impedance OFF-state. The bus hold
circuitry on the powered-up side always stays active.
2. Features
www.DataSheet4U.com
„ Wide supply voltage range:
‹ VCC(A): 0.8 V to 3.6 V
‹ VCC(B): 0.8 V to 3.6 V
„ Complies with JEDEC standards:
‹ JESD8-12 (0.8 V to 1.3 V)
‹ JESD8-11 (0.9 V to 1.65 V)
‹ JESD8-7 (1.2 V to 1.95 V)
‹ JESD8-5 (1.8 V to 2.7 V)
‹ JESD8-B (2.7 V to 3.6 V)
„ ESD protection:
‹ HBM JESD22-A114E Class 3B exceeds 8000 V
‹ MM JESD22-A115-A exceeds 200 V
‹ CDM JESD22-C101C exceeds 1000 V
„ Maximum data rates:
‹ 380 Mbit/s (≥ 1.8 V to 3.3 V translation)
‹ 260 Mbit/s (≥ 1.1 V to 3.3 V translation)
‹ 260 Mbit/s (≥ 1.1 V to 2.5 V translation)

1 page




74AVCH20T245 pdf
NXP Semiconductors
74AVCH20T245
20-bit dual supply translating transceiver; 3-state
5.2 Pin description
Table 2. Pin description
Symbol
Pin
1DIR, 2DIR
1, 28
1B1 to 1B10
2, 3, 5, 6, 8, 9, 10, 12, 13, 14
2B1 to 2B10
15, 16, 17, 19, 20, 21, 23, 24, 26, 27
GND[1]
4, 11, 18, 25, 32, 39, 46, 53
VCC(B)
1OE, 2OE
7, 22
56, 29
1A1 to 1A10
55, 54, 52, 51, 49, 48, 47, 45, 44, 43
2A1 to 2A10
42, 41, 40, 38, 37, 36, 34, 33, 31, 30
VCC(A)
35, 50
n.c. -
[1] All GND pins must be connected to ground (0 V).
Description
direction control
data input or output
data input or output
ground (0 V)
supply voltage B (nBn inputs are referenced to VCC(B))
output enable input (active LOW)
data input or output
data input or output
supply voltage A (nAn, nOE and nDIR inputs are referenced
to VCC(A))
not connected
6. Functional description
Table 3. Function table[1]
Supply voltage
Input
VCC(A), VCC(B)
0.8 V to 3.6 V
nOE[3]
L
0.8 V to 3.6 V
L
0.8 V to 3.6 V
H
GND[2]
X
nDIR[3]
L
H
X
X
Input/output[2]
nAn[3]
nAn = nBn
input
Z
Z
nBn[3]
input
nBn = nAn
Z
Z
w w [w1] . HD= Ha IGt HavoSltaghe leeveel; Lt =4LOUW. vocltaogemlevel; X = don’t care; Z = high-impedance OFF-state.
[2] If at least one of VCC(A) or VCC(B) is at GND level, the device goes into suspend mode.
[3] The nAn, nDIR and nOE input circuit is referenced to VCC(A); The nBn input circuit is referenced to VCC(B).
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 Parameter
Conditions
Min Max Unit
VCC(A)
VCC(B)
IIK
VI
IOK
VO
supply voltage A
supply voltage B
input clamping current
input voltage
output clamping current
output voltage
VI < 0 V
VO < 0 V
Active mode
Suspend or 3-state mode
−0.5
−0.5
−50
[1] −0.5
−50
[1][2][3] −0.5
[1] −0.5
+4.6
+4.6
-
+4.6
-
VCCO + 0.5
+4.6
V
V
mA
V
mA
V
V
IO output current
ICC supply current
VO = 0 V to VCCO
ICC(A) or ICC(B)
[2] -
±50 mA
- 100 mA
74AVCH20T245_1
Product data sheet
Rev. 01 — 13 January 2010
© NXP B.V. 2010. All rights reserved.
5 of 25

5 Page





74AVCH20T245 arduino
NXP Semiconductors
74AVCH20T245
20-bit dual supply translating transceiver; 3-state
10. Dynamic characteristics
Table 9. Typical power dissipation capacitance at VCC(A) = VCC(B) and Tamb = 25 °C [1][2]
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
0.8 V
1.2 V
VCC(A) = VCC(B)
1.5 V 1.8 V
CPD power dissipation A port: (direction A to B); 0.2 0.2 0.2 0.2
capacitance
output enabled
A port: (direction A to B); 0.2 0.2 0.2 0.2
output disabled
A port: (direction B to A); 9.5 9.7 9.8 9.9
output enabled
A port: (direction B to A); 0.6 0.6 0.6 0.6
output disabled
B port: (direction A to B); 9.5 9.7 9.8 9.9
output enabled
B port: (direction A to B); 0.6 0.6 0.6 0.6
output disabled
B port: (direction B to A); 0.2 0.2 0.2 0.2
output enabled
B port: (direction B to A); 0.2 0.2 0.2 0.2
output disabled
[1] CPD is used to determine the dynamic power dissipation (PD in μW).
PD = CPD × VCC2 × fi × N + Σ(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
www.DataSΣh(eCeLt4×UV.CcoC2m× fo) = sum of the outputs.
[2] fi = 10 MHz; VI = GND to VCC; tr = tf = 1 ns; CL = 0 pF; RL = ∞ Ω.
2.5 V
0.3
0.3
10.7
0.7
10.7
0.7
0.3
0.3
3.3 V
0.4
Unit
pF
0.4 pF
11.9 pF
0.7 pF
11.9 pF
0.7 pF
0.4 pF
0.4 pF
74AVCH20T245_1
Product data sheet
Rev. 01 — 13 January 2010
© NXP B.V. 2010. All rights reserved.
11 of 25

11 Page







PáginasTotal 25 Páginas
PDF Descargar[ Datasheet 74AVCH20T245.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
74AVCH20T24520-bit Dual Supply Translating TransceiverNXP Semiconductors
NXP Semiconductors

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

 Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

 Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar