74ALVCH162245 Datasheet, PDF (1/7 Pages) NXP Semiconductors – 16-bit bus transceiver with direction pin and 30ohm termination resistor 3-State

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
INDUSTRIAL TEMPERATURE RANGE
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
1
© 1999 Integrated Device Technology, Inc.
25
2OE
13 _2B1
14 _2B2
16 _2B3
17 _2B4
19 _2B5
20 _2B6
22 _2B7
23 _2B8
APRIL 1999
DSC-4748/1