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IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS AND BUS-HOLD
INDUSTRIAL TEMPERATURE RANGE
IDT74ALVCH16245
FEATURES:
• 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 TSSOP package
DRIVE FEATURES:
• High Output Drivers: ±24mA • Suitable for heavy loads
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 ALVCH16245 is designed for asynchronous communication between data buses. The control-function implementation minimizes 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 ALVCH16245 has been designed with a ±24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance.
The ALVCH16245 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.
FUNCTIONAL BLOCK DIAGRAM
1DIR 1 1A1 47 1A2 46 1A3 44 1A4 43 1A5 41 1A6 40 1A7 38 1A8 37
48 1OE 2 1B1 3 1B2 5 1B3 6 1B4 8 1B5 9 1B6 11 1B7
12 1B8
2DIR 24 2A1 36 2A2 35 2A3 33 2A4 32 2A5 30 2A6 29 2A7 27 2A8 26
25 2OE 13 2B1 14 2B2 16 2B3 17 2B4 19 2B5 20 2B6 22 2B7
23 2B8
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2016 Integrated Device Technology, Inc.
AUGUST 2016
DSC-4697/6
IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
1DIR
1
1B1
2
1B2
3
GND
4
1B3
5
1B4
6
VCC
7
1B5
8
1B6
9
GND
10
1B7
11
1B8
12
2B1
13
2B2
14
GND
15
2B3
16
2B4
17
VCC
18
2B5
19
2B6
20
GND
21
2B7
22
2B8
23
2DIR
24
48
1OE
47
1A1
46
1A2
45
GND
44
1A3
43
1A4
42
VCC
41
1A5
40
1A6
39
GND
38
1A7
37
1A8
36
2A1
35
2A2
34
GND
33
2A3
32
2A4
31
VCC
30
2A5
29
2A6
28
GND
27
2A7
26
2A8
25
2OE
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Max
Unit
VTERM(2) Terminal Voltage with Respect to GND –0.5 to +4.6
V
VTERM(3) Terminal Voltage with Respect to GND –0.5 to VCC+0.5 V
TSTG Storage Temperature
–65 to +150
°C
IOUT
DC Output Current
–50 to +50
mA
IIK
Continuous Clamp Current,
VI < 0 or VI > VCC
±50
mA
IOK
Continuous Clamp Current, VO < 0
–50
mA
ICC
Continuous Current through each
ISS
VCC or GND
±100
mA
NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. VCC terminals. 3. All terminals except VCC.
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Symbol
Parameter(1)
Conditions Typ. Max. Unit
CIN
Input Capacitance
VIN = 0V
5
COUT
Output Capacitance VOUT = 0V
7
7
pF
9
pF
CI/O
I/O Port Capacitance VIN = 0V
7
9
pF
NOTE: 1. As applicable to the device type.
PIN DESCRIPTION
Pin Names xOE DIR
Description Output Enable Inputs (Active LOW) Direction Control Inputs
xAx
Side A Inputs or 3-State Outputs(1)
xBx
Side B Inputs or 3-State Outputs(1)
NOTE: 1. These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.
TSSOP TOP VIEW
FUNCTION TABLE (EACH 8-BIT SECTION)(1)
Inputs
xOE
xDIR
Outputs
L
L
Bus B Data to Bus A
L
H
Bus A Data to Bus B
H
X
NOTE: 1. H = HIGH Voltage Level
L = LOW Voltage Level X = Don’t Care
High Z state
2
IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = –40°C to +85°C
Symbol
Parameter
Test Conditions
Min. Typ.(1)
Max.
Unit
VIH
Input HIGH Voltage Level
VCC = 2.3V to 2.7V
1.7
—
—
V
VCC = 2.7V to 3.6V
2
—
—
VIL
Input LOW Voltage Level
VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V
—
—
0.7
V
—
—
0.8
IIH
Input HIGH Current
VCC = 3.6V
VI = VCC
—
—
±5
μA
IIL
Input L.