PI74LVC3245AL PERICOM [Pericom Semiconductor Corporation], PI74LVC3245AL Datasheet

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PI74LVC3245AL

Manufacturer Part Number
PI74LVC3245AL
Description
8-Bit Dual Supply Bus Transceiver with 3-State Outputs
Manufacturer
PERICOM [Pericom Semiconductor Corporation]
Datasheet
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
• Industrial Temperature: –40°C to +85°C
• Available Packages:
Logic Block Diagram
Truth Table
Note:
1. H = High Signal Level
X = Don’t Care or Irrelevant
2000V Human-Body Model (A114-B)
200V Machine Model (A115-A)
24-pin 173-mil wide plastic TSSOP (L)
24-pin 150-mil wide plastic QSOP (Q)
24-pin 300-mil wide plastic SOIC (S)
OE
H
L
L
DIR
(1)
Inputs
A
A
A
A
A
A
A
A
1
2
3
4
5
6
7
8
10
3
4
6
5
7
2
8
9
DIR
H
X
L
L = Low Signal Level
Z = High Impedance
18
19
22
20
17
16
21
15
14
Bus B Data to Bus A
Bus A Data to Bus B
B
B
B
B
B
B
B
B
OE
1
2
3
4
5
6
7
8
Z (Isolation)
Outputs
1
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 (V
is set to operate at 3.3V and B-port (V
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
Product Pin Description
Pin Name
OE
DIR
Ax
Bx
NC
GND
V
CCA
,V
CCB
(3.3V) V
8-Bit Dual Supply Bus Transceiver
GND
GND
CCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
Description
3-State Output Enable Inputs (Active LOW)
Direction Control Input
Side A Inputs or 3-State Outputs
Side B Inputs or 3-State Outputs
NO Internal Connect
Ground
Power
1
2
3
4
5
6
7
8
9
10
11
12
with 3-State Outputs
24
23
22
21
20
19
18
17
16
15
14
13
CCB
PI74LVC3245A
) is set to operate at 5V.
V
NC
OE
B1
B2
B3
B4
B5
B6
B7
B8
GND
CCB
(5V)
P-0.3
08/05/03
CCA
)

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PI74LVC3245AL Summary of contents

Page 1

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 ...

Page 2

Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Supply voltage range, V and V CCA CCB ............................ (2) Input voltage range I/O ports (A-port) I I/O ports (B-port) Control Pins ................. ...

Page 3

Recommended Operating Conditions Parameters Description V Supply Voltage CCA V Supply Voltage CCB V High-Level Input Voltage IHA V High-Level Input Voltage IHB V Low-Level Input Voltage ILA V Low-Level Input Voltage ILB High-Level Input Voltage V IH (Control Pins) ...

Page 4

DC Electrical Characteristics Parameters Description Minimum High Level V OHA Output Voltage (Port A) Minimum High Level V OHB Output Voltage (Port B) Maximum Low Level V OLA Output Voltage (Port A) Maximum Low Level V OLB Output Voltage (Port ...

Page 5

Capacitance (T = 25°C) A Param- Description eters C Control Input Capacitance IN Input/Output Capacitance C I port) Power Dissipation C PD (7) Capacitance Notes defined as the value of the internal equivalent capacitance ...

Page 6

Power- Up Considerations To avoid excessive supply current, bus contention or oscillation during power-up, the following guidelines should be followed: 1. Connect ground first before any supply voltage is applied. 2. Power which is the control side ...

Page 7

PARAMETER MEASUREMENT INFORMATION FOR PORT From Output Under Test 50 500Ω 50pF 500Ω (See Note A) Load Circuit 1.5V B Port Input t PLH A-Port 1.5V Output Voltage Waveforms Propagation Delay Times Figure 2. Load ...

Page 8

Packaging Mechanical: 24-pin TSSOP ( .303 .311 7.7 7.9 .0256 BSC 0.65 Packaging Mechanical: 24-pin QSOP ( .033 0.84 .025 typical 0.635 X.XX X.XX ADVANCE INFORMATION .169 4.3 .177 4.5 .047 1.20 Max SEATING PLANE .002 ...

Page 9

... X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Ordering Information Ordering Code PI74LVC3245AL PI74LVC3245AQ PI74LVC3245AS Notes: 1. Thermal characteristics can be found on the company web site at http://www.pericom.com/packaging/mechanicals.php 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com ADVANCE INFORMATION 7.40 ...

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