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PDF IDT74ALVCH162245 Data sheet ( Hoja de datos )

Número de pieza IDT74ALVCH162245
Descripción 3.3V CMOS 16-BIT BUS TRANSCIEVER WITH 3-STATE OUTPUTS AND BUS-HOLD
Fabricantes Integrated Device Tech 
Logotipo Integrated Device Tech Logotipo



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IDT74ALVCH162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
3.3V CMOS 16-BIT BUS
TRANSCIEVER WITH
3-STATE OUTPUTS
AND BUS-HOLD
INDUSTRIALTEMPERATURERANGE
IDT74ALVCH162245
.EATURES:
• 0.5 MICRON CMOS Technology
• Typical tSK(o) (Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• VCC = 3.3V ± 0.3V, Normal Range
• VCC = 2.7V to 3.6V, Extended Range
• VCC = 2.5V ± 0.2V
• CMOS power levels (0.4µ W typ. static)
• Rail-to-Rail output swing for increased noise margin
• Available in SSOP, TSSOP, and TVSOP packages
DRIVE .EATURES:
• Balanced Output Drivers: ±12mA (A port)
• High Output Drivers: ±24mA (B port)
APPLICATIONS:
• 3.3V high speed systems
• 3.3V and lower voltage computing systems
DESCRIPTION:
This 16-bit bus transceiver is built using advanced dual metal CMOS
technology. The ALVCH162245 is designed for asynchronous commu-
nication between data buses. The control-function implementation mini-
mizes external timing requirements.
This device can be used as two 8-bit transceivers or one 16-bit
transceiver. It allows data transmission from the A bus to the B bus or from
the B bus to the A bus, depending on the logic level at the direction-control
(DIR) input. The output-enable (OE) input can be used to disable the
device so that the buses are effectively isolated.
The ALVCH162245 has series resistors in the device out-put structure
of the “A” port which will significantly reduce line noise when used with light
loads. This driver has been designed to drive ±12mA at the designated
threshold levels. The “B” port has a ±24mA driver.
The ALVCH162245 has “bus-hold” which retains the inputs’ last state
whenever the input bus goes to a high impedance. This prevents floating
inputs and eliminates the need for pull-up/down resistors.
.UNCTIONAL BLOCK DIAGRAM
1DIR 1
1A1 47
1A2 46
1A3 44
43
1A 4
1A5 41
1A6 40
1A7 38
1A8 37
48
1OE
2 1B1
3 1B2
5 1B3
6
1B 4
8 1B5
9 1B6
11 1B7
12 1B8
2DIR 24
2A1 36
35
2A2
2A3 33
2A4 32
2A5 30
2A6 29
2A7 27
2A8 26
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
© 1999 Integrated Device Technology, Inc.
1
25
2OE
13 2B1
14 2B2
16 2B3
17 2B4
19 2B5
20 2B6
22 2B7
23 2B8
APRIL 1999
DSC-4748/1

1 page




IDT74ALVCH162245 pdf
IDT74ALVCH162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SWITCHING CHARACTERISTICS (A PORT)(1)
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tSK(o)
Parameter
Propagation Delay
xBx to xAx
Output Enable Time
xOE to xAx
Output Disable Time
xOE to xAx
Output Skew(2)
VCC = 2.5V ± 0.2V
Min. Max.
1 4.9
1 6.8
1 6.3
——
VCC = 2.7V
Min. Max.
4.7
6.7
5.7
——
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
INDUSTRIALTEMPERATURERANGE
VCC = 3.3V ± 0.3V
Min. Max.
1 4.2
1 5.6
1 5.5
500
Unit
ns
ns
ns
ps
SWITCHING CHARACTERISTICS (B PORT)(1)
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tSK(o)
Parameter
Propagation Delay
xAx to xBx
Output Enable Time
xOE to xBx
Output Disable Time
xOE to xBx
Output Skew(2)
VCC = 2.5V ± 0.2V
Min. Max.
1 3.7
1 5.7
1 5.2
——
VCC = 2.7V
Min. Max.
3.6
5.4
4.6
——
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
VCC = 3.3V ± 0.3V
Min. Max.
13
1 4.4
1 4.1
500
Unit
ns
ns
ns
ps
5

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