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Pericom Semiconductor Corporation

PI74LVC3245A Datasheet Preview

PI74LVC3245A Datasheet

8-Bit Dual Supply Bus Transceiver with 3-State Outputs

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ADVANCE INFORMATION
PI74LVC3245A
8-Bit Dual Supply Bus Transceiver
with 3-State Outputs
Product Features
• 2.7V to 3.6V on A-port and 4.5V to 5.5V on B-port
• TTL Compatible Inputs
• Latch-up performance exceeds 200mA Per JESD78
• ESD protection exceeds JESD22
2000V Human-Body Model (A114-B)
200V Machine Model (A115-A)
• Industrial Temperature: –40°C to +85°C
• Available Packages:
24-pin 173-mil wide plastic TSSOP (L)
24-pin 150-mil wide plastic QSOP (Q)
24-pin 300-mil wide plastic SOIC (S)
Logic Block Diagram
DIR 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
A8 10
Truth Table(1)
Inputs
OE
L
L
H
DIR
L
H
X
Note:
1. H = High Signal Level
X = Don’t Care or Irrelevant
22 OE
21 B1
20 B2
19 B3
18 B4
17 B5
16 B6
15 B7
14 B8
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
Z (Isolation)
L = Low Signal Level
Z = High Impedance
Product Description
Pericom Semiconductor’s PI74LVC series of logic circuits are
produced using the Company’s advanced submicron CMOS tech-
nology, achieving industry leading speed.
The PI74LVC3245A is a non-inverting 8-bit Bidirectional Trans-
ceiver that uses two seperate power supply rails. A-port (VCCA)
is set to operate at 3.3V and B-port (VCCB) is set to operate at 5V.
This allows for translation from a 3.3V to a 5Venvironment and
vice-versa. This tranceiver is designed for asynchronous two-way
communication between data buses. The direction control input pin
(DIR) determines the dataflow from the A bus to the B bus or from
the B bus to the A bus. The output enable (OE) input, when HIGH,
disables both A and B ports by placing them in HIGH Z condi-
tion.
Product Pin Configuration
(3.3V) VCCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
GND
1
2
3
4
5
6
7
8
9
10
11
12
24 VCCB (5V)
23 NC
22 OE
21 B1
20 B2
19 B3
18 B4
17 B5
16 B6
15 B7
14 B8
13 GND
Product Pin Description
Pin Name
Description
OE 3-State Output Enable Inputs (Active LOW)
DIR Direction Control Input
Ax Side A Inputs or 3-State Outputs
Bx Side B Inputs or 3-State Outputs
NC NO Internal Connect
GND
Ground
VCCA,VCCB Power
1
P-0.3
08/05/03




Pericom Semiconductor Corporation

PI74LVC3245A Datasheet Preview

PI74LVC3245A Datasheet

8-Bit Dual Supply Bus Transceiver with 3-State Outputs

No Preview Available !

ADVANCE INFORMATION
PI74LVC3245A
8-Bit Dual Supply Bus Transceiver
with 3-State Outputs
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
SInuppupt lvyolvtaoglteargaengrae,nVgeI(,2V) :CIC/OA
and VCCB ............................ –0.5V to +7V
ports (A-port) ....–0.5V to VCCA +0.5V
I/O ports (B-port) ........... –0.5V to VCCB+0.5V
Control Pins .................–0.5V to VCCA +0.5V
Input clamp current, IIK (VI <0)................................................–50mA
Output clamp current, IOK (VO <0)...........................................–50mA
Continous Output Current IO ..................................................±50mA
Continous Current
Package thermal
through each
impedance,
JCAC(3o):r
GND pin .....................±100mA
package L...................... 84°C/W
package Q...................... 98°C/W
package S ...................... 79°C/W
Storage Temperature range, Tstg ................................–65°C to 150°C
Notes:
Stresses greater than those listed under MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and func-
tional 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. This value is limited to 7V maximum.
3. The package thermal impedance is calculated in accordance with JESD
51.
2
P-0.3
08/05/03


Part Number PI74LVC3245A
Description 8-Bit Dual Supply Bus Transceiver with 3-State Outputs
Maker Pericom Semiconductor Corporation
Total Page 9 Pages
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