Low Voltage Octal Bus Buffer
Description
TC7MZ244FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC7MZ244FK
Low Voltage Octal Bus Buffer with 5 V Tolerant Inputs and Outputs
The TC7MZ244FK is a high performance CMOS octal bus buffer.
Designed for use in 3.
3 V systems, it achieves high speed operation while maintaining the CMOS low power dissipation.
The device is designed for low-voltage (3.
3 V) VCC applications, but it could be used to interface to 5 V supply environment for both inputs and outputs.
The TC7MZ244FK is a non-inverting 3-state buffer having two active-low output enables.
This device is designed to be used with 3-state memory address drivers, etc.
All inputs are equipped with protection circuits against static discharge.
Features
Weight: 0.
03 g (typ.
)
• Low voltage operation: VCC = 2.
0~3.
6 V • High speed operation: tpd = 6.
5 ns (max) (VCC = 3.
0~3.
6 V) • Output current: |IOH|/IOL = 24 mA (min) (VCC = 3.
0 V) • Latch-up performance: −500 mA • Package: VSSOP (US20) • Power down protection is provided on all inputs and outputs.
• Pin and function compatible with the 74 series (74AC/VHC/HC/F/ALS/LS etc.
) 244 type.
1
2007-10-19
Pin Assignment (top view)
1OE 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10
20 VCC 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1
IEC Logic Symbol
1
1OE
EN
2 1A1
4 1A2
6 1A3
8 1A4
TC7MZ244FK
18 1Y1
16 1Y2
14 1Y3
12 1Y4
19
2OE
EN
11 2A1
13 2A2
15 2A3
17 2A4
9 2Y1
7 2Y2
5 2Y3
3 2Y4
Truth Table
Inputs
OE
An
L
L
L
H
H
X
X: Don’t care Z: High impedance
Outputs
L H Z
Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage range DC input voltage
DC output voltage
Input diode current Output diode current DC output current Power dissipation DC VCC/ground current Storage temperature
VCC VIN
VOUT
IIK IOK IOUT PD ICC/IGND Tstg
−0.
5~7.
0
V
−0.
5~7.
0
V
−0.
5~7.
0 (Note 2) V
−0.
5~VCC + 0.
5 (Note 3)
−50
mA
±50 (Note 4) mA
±50
mA
180
mW
±100
mA
−65~150
°C
Note 1:
Exceeding a...
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