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PI74LVTCH16245 Datasheet Preview

PI74LVTCH16245 Datasheet

3.3V 16-Bit Bi-Directional Transceiver

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PI74LVTCH16245
3.3V 16-Bit Bi-Directional Transceiver
with 3-State Outputs
Product Features
· Advanced low power CMOS design for 2.7V to 3.6V
Vcc operation
· Supports 5V input/output tolerance in mixed signal mode
operation
· Function compatible with LVT family of products
· Balanced ±24mA output drive
· Typical VOLP (Output Ground Bounce) < 0.8V at VCC=3.3V,
TA=25°C
· Ioff and Power Up/Down 3-State support live insertion
· Bus Hold on data inputs eliminates the need for external
pull-up/down resistors
· Latch-up performance exceeds 200mA Per JESD78
· ESD protection exceeds JESD 22
2000V Human-Body Model (A114-B)
200V Machine Model (A115-A)
· Industrial Temperature: 40°C to +85°C
· Packaging (Pb-free & Green available):
48-pin 240-mil wide plastic TSSOP (A)
Logic Block Diagram
1
1DIR
1A0 47
1A1 46
1A2 44
1A3 43
1A4 41
1A5 40
1A6 38
1A7 37
48 1OE
2 1B0
3 1B1
5 1B2
6 1B3
8 1B4
9 1B5
11 1B6
12 1B7
24
2DIR
2A0 36
2A1 35
2A2 33
2A3 32
2A4 30
2A5 29
2A6 27
2A7 26
25 2OE
13 2B0
14 2B1
16 2B2
17 2B3
19 2B4
20 2B5
22 2B6
23 2B7
Product Description
The PI74LVTCH16245 is a non-inverting 16-bit Bidirectional Trans-
ceiver designed for low-voltage 2.7V to 3.6V VCC operation, with the
capability of interfacing to the 5V system environment. This
tranceiver is designed for asynchronous two-way communication
between data buses. The direction control input pin (xDIR) deter-
mines the direction of the data flow through the bidirectional
transceiver. The Direction and Output Enable controls are designed
to operate this device as either two independent 8-bit tranceivers
or one 16-bit transceiver. The output enable (xOE) input,
when HIGH, disables both A and B ports by placing them in
HIGH Z condition.
The PI74LVTCH16245 has "Bus Hold" which retains the data
input's last valid logic state whenever the data input goes to high-
impedance, preventing "floating" inputs and eliminating the need
for pull-up/down resistors.
When VCC is between 0 to 1.5V during power up or power down, the
outputs of the device are in the high-impedance state. To ensure
the high-impedance state above 1.5V, OE 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.
The device fully supports live-insertion with its Ioff and power-up/
down 3-state. The Ioff circuitry disables the outputs when the
power is off, preventing the backflow of damaging current through
the device. Power-up/down 3-state places the outputs in the
high-impedance state during power up or power down, preventing
driver conflict.
06-0215
1
PS 8649C
03/14/07




Pericom Semiconductor

PI74LVTCH16245 Datasheet Preview

PI74LVTCH16245 Datasheet

3.3V 16-Bit Bi-Directional Transceiver

No Preview Available !

PI74LVTCH16245
3.3V, 16-Bit Bi-Directional Tranceivers
with 3-State Outputs
Maximum Ratings
(Above which the useful life may be impaired.
For user guidelines, not tested.)
Supply voltage range, VCC .............................. –0.5V to +6.5V
Input voltage range, VI(1) ................................ –0.5V to +6.5V
Voltage range applied to any output in the
high-impedance or power-off state, VO(1) ....... –0.5V to +6.5V
Voltage range applied to any output in the
active state, VO(1,2) ................................... –0.5V to VCC+0.5V
Input clamp current, IIK (VI <0) ..................................... –50mA
Output clamp current, IOK (VO <0) ............................... –50mA
Continous Output Current IO ....................................... ±50mA
ContinousCurrentthrougheachVCCorGNDpin .............. ±100mA
Package thermal impedance, θJA(3) .................................. 104°C/W
Storage Temperature range, Tstg ..................... –65°C to 150°C
Product Pin Description
Pin Name
Description
xOE 3-State Output Enable Inputs (Active LOW)
xDIR
xAx
xBx
GND
Direction Control Inputs (Active HIGH)
Side A Inputs or 3-State Outputs
Side B Inputs or 3-State Outputs
Ground
VCC Power
Product Pin Configuration
Notes:
Stresses greater than those listed under MAXIMUM RATINGS may
cause permanent damage to the device. This is a stress rating only and
functional 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.
1. The input negative-voltage and output voltage ratings may be exceeded
if the input and output clamp current ratings are observed.
2. This value is limited to 6.5V maximum.
3. The package thermal impedance is calculated in accordance with
JESD 51.
Truth Table(1)
Inputs
xOE
L
L
H
xDIR
L
H
X
Notes:
1. H = High Signal Level
L = Low Signal Level
X = Don’t Care or Irrelevant
Z = High Impedance
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
Z
1DIR
1B0
1B1
GND
1B2
1B3
VCC
1B4
1B5
GND
1B6
1B7
2B0
2B1
GND
2B2
2B3
VCC
2B4
2B5
GND
2B6
2B7
2DIR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48 1OE
47 1A0
46 1A1
45 GND
44 1A2
43 1A3
42 VCC
41 1A4
40 1A5
39 GND
38 1A6
37 1A7
36 2A0
35 2A1
34 GND
33 2A2
32 2A3
31 VCC
30 2A4
29 2A5
28 GND
27 2A6
26 2A7
25 2OE
06-0215
2
PS 8649C
03/14/07


Part Number PI74LVTCH16245
Description 3.3V 16-Bit Bi-Directional Transceiver
Maker Pericom Semiconductor
Total Page 7 Pages
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