PI74STX2G4245 Datasheet, PDF (1/8 Pages) Pericom Semiconductor Corporation – 2-Bit Level Shifting Buffer/Transceiver with Configurable Dual Supply VoltageDIRB243A2B176

Features
• Operation Voltage: 1.65V ≤ V_CCA ≤ 3.6V
2.3V ≤ V_CCB ≤ 5.5V
V_CCA ≤ V_CCB
• High Speed: tpd = 5ns typical into 30pF @ 3V V_CC
• Power down high-impedance inputs and outputs
• High output drive: ±12mA at 3V V_CCA/V_CCB
±24mA at 5V V_CCB
• Industrial operation at –40°C to +85°C
• Packaging (Pb-free & Green available):
- 8-pin MSOP (U)
- 12-pin TDFN (ZE)
PI74STX2G4245
2-Bit Level Shifting Buffer/Transceiver
with Configurable Dual Supply Voltage
Description
Pericom Semiconductor’s PI74STX2G4245, a 2-bit noninverting
buffer/transceiver, contains two separate supply rails:A port
(V_CCA), set to operate from 1.8V to 3.3V; B port (V_CCB), set
to operate from 2.5V to 5V. The A1 to B1 translation is con-
figured as an unidirectional buffer; the translation between
A2 and B2 is bidirectional and its direction is controlled
by the DIR pin. The DIR pin is supplied by V_CCB.
Block Diagram
DIR ⁴
A2 ³
A1 ²
6 _B2
7 _B1
Pin Configuration (MSOP)
(1.8V to 3.3V)V_CCA
1
A1 ²
A2 ³
DIR ⁴
8
V_CCB (2.5V to 5V)
7 _B1
6 _B2
5 _GND
Function Table
Input
DIR
L
H
X
DATA
B2
A2
A1
Pin Description
Pin Name
DIR
A1
B1
A2, B2
V_CCA, V_CCB
Description
Direction Control
Data Input
Data Output
Data Input/Output
Power Supply
Output
A2
B2
B1
Pin Configuration (TDFN)
NC 1
(1.8V to 3.3V ) V_CCA
2
A1 3
A2 4
DIR 5
NC 6
12
NC
11
V_CCB (2.5V to 5V)
10
B1
9
B2
8
GND
7
NC
* NC = No Connect
1
PS8729C
09/27/04