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IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS AND BUS-HOLD
• 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
IDT74ALVCH16245
FEATURES:
DESCRIPTION:
DRIVE FEATURES:
• High Output Drivers: ±24mA • Suitable for heavy loads
APPLICATIONS:
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.
• 3.3V high speed systems • 3.3V and lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
1DIR
1
2DIR
48
24 25 36 13 35 14 33 16 32 17 30 19 29 20 27 22
1OE 2A1
2OE
1A1
47 2 46 3 44 5 43 6 41 8 40 9 38 11
1B1 2A2 1B2 2A3 1B3 2A4 1B4 2A5 1B5 2A6 1B6 2A7 1B7 2A8
26
2B1
1A2
2B2
1A3
2B3
1A4
2B4
1A5
2B5
1A6
2B6
1A7
2B7
1A8
37
12
1B8
23
2B8
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 1999 Integrated Device Technology, Inc.
MARCH 1999
DSC-4697/1
IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Max VTERM(2) Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Storage Temperature DC Output Current Continuous Clamp Current, VI < 0 or VI > VCC Continuous Clamp Current, VO < 0 Continuous Current through each VCC or GND –0.5 to +4.6 –0.5 to VCC+0.5 –65 to +150 –50 to +50 ±50 –50 ±100 VTERM(3) TSTG IOUT IIK IOK ICC ISS
Unit V V °C mA mA mA mA
1DIR 1B1 1B2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
1OE 1A1 1A2
GND
1B3 1B4
GND
1A3 1A4
VCC
1B5 1B6
VCC
1A5 1A6
GND
1B7 1B8 2B1 2B2
GND
1A7 1A8 2A1 2A2
NOTES: 1. Stresses greater than those l.