PI74AVC164245 Datasheet, PDF (1/10 Pages) Pericom Semiconductor Corporation – 16-BIT 1.8-2.5V TO 3.3V LEVEL SHIFTING TRANSCEIVER WITH 3-STATE OUTPUTS

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16-Bit 1.8-2.5V to 3.3V Level Shifting
Transceiver with 3-State Outputs
Product Features
• PI74AVC164245 is designed for low voltage operation:
1.8V - 2.5V to 3.3V
• 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)
Truth Table (each 8-bit section)
Inputs
OE
DIR
L
L
L
H
H
X
Operation
B data to A bus
A data to B bus
Isolation
Logic Block Diagram
Product Description
Pericom Semiconductor’s AVC series of logic circuits are produced
using the Company’s advanced 0.35 micron CMOS technology,
achieving industry leading performance.
Pericom Semiconductor’s PI74AVC164245, a 16-bit (dual-octal)
noninverting bus transceiver, contains two separate supply rails:
B port (V_CCB), set at 3.3V, and A port (V_CCA), 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.
The PI74AVC164245 is designed for asynchronous communication
between data buses.
To ensure the high impedance state during power up or power
down, the output-enable (OE) input should be tied to V_CC through
a pullup resistor: the minimum value of the resistor is determined by
the current-sinking capability of the driver.
Product Pin Configuration
1DIR ¹
1A1 ⁴⁷
2DIR ²⁴
2A1 ³⁶
48 _1OE
To Seven Other Channels
2 _1B1
25 _2OE
To Seven Other Channels
13 _2B1
(LVTTL)1DIR
1B1
1B2
GND
1B3
1B4
(3.3V)VCCB
1B5
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
(3.3V)VCCB
2B5
2B6
GND
2B7
2B8
(LVTTL)2DIR
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11 48-Pin 38
12 A, K, V 37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
1OE(LVTTL)
1A1
1A2
GND
1A3
1A4
VCCA(1.8V-2.5V)
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
VCCA(1.8V-2.5V)
2A5
2A6
GND
2A7
2A8
2OE(LVTTL)
1
PS8425D 04/05/02