PI74AVC164245
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
16-Bit 1.8-2.5V to 3.3V Level Shifting
Transceiver with 3-State Outputs
Product Features
Product Description
• PI74AVC164245 is designed for low voltage operation:
1.8V - 2.5V to 3.3V
Pericom Semiconductor’s AVC series of logic circuits are produced
using the Company’s advanced 0.35 micron CMOS technology,
achieving industry leading performance.
• Industrial operation at –40°C to +85°C
• Packages available:
– 48-pin plastic 300 mil SSOP (V)
– 48-pin plastic 240 mil TSSOP (A)
– 48-pin plastic 173 mil TVSOP (K)
Pericom Semiconductor’s PI74AVC164245, a 16-bit (dual-octal)
noninverting bus transceiver, contains two separate supply rails:
B port (VCCB), set at 3.3V, and A port (VCCA), set to operate
at 1.8-2.5V. This arrangement permits translation from a 1.8-2.5V to
3.3V environment and vice versa.
Truth Table (each 8-bit section)
The PI74AVC164245 is designed for asynchronous communication
between data buses.
Inputs
OE
DIR
L
L
H
L
H
X
To ensure the high impedance state during power up or power
down, the output-enable (OE) input should be tied to VCC through
a pullup resistor: the minimum value of the resistor is determined by
the current-sinking capability of the driver.
Ope ration
B data to A bus
A data to B bus
Isolation
Logic Block Diagram
1DIR
Product Pin Configuration
1
48
1A1
1OE
47
2
1B1
To Seven Other Channels
2DIR 24
25
2A1
2OE
36
13
2B1
To Seven Other Channels
1
(LVTTL)1DIR
1
48
1OE(LVTTL)
1B1
2
47
1A1
1B2
3
46
1A2
GND
4
45
GND
1B3
5
44
1A3
1B4
6
43
1A4
(3.3V)VCCB
7
42
VCCA(1.8V-2.5V)
1B5
8
41
1A5
1B6
9
40
1A6
GND
10
39
GND
1B7
11
38
1A7
1B8
12
37
1A8
2B1
13
36
2A1
2B2
14
35
2A2
GND
15
34
GND
2B3
16
33
2A3
48-Pin
A, K, V
2B4
17
32
2A4
(3.3V)VCCB
18
31
VCCA(1.8V-2.5V)
2B5
19
30
2A5
2B6
20
29
2A6
GND
21
28
GND
2B7
22
27
2A7
2B8
23
26
2A8
(LVTTL)2DIR
24
25
2OE(LVTTL)
PS8425D
04/05/02
PI74AVC164245
16-Bit 1.8-2.5V to 3.3V Level Shifting
Transceiver with 3-State Outputs
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Maximum Ratings
(Absolute maximum ratings over operating free-air temperature range from VCCB at 3.3V & VCCA at 1.5 - 2.5V, unless otherwise noted)
Supply voltage range:
VCCA .................................. –0.5V to 3.8V
VCCB .................................. –0.5V to 4.6V
Input Voltage Range, VI Except I/O ports(1) ......–0.5V to 4.6V
I/O port A(2) ... –0.5V to VCCA+0.5V
I/O port B(1) .... –0.5V to VCCB+0.5V
Input clamp current, IIK (VI
很抱歉,暂时无法提供与“PI74AVC164245AAE”相匹配的价格&库存,您可以联系我们找货
免费人工找货