TC7MA2541FK
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC7MA2541FK
Low-Voltage Octal Bus Buffer with 3.6 V Tolerant Inputs and Outputs
The TC7MA2541FK is a high performance CMOS octal bus
buffer. Designed for use in 1.8 V, 2.5 V or 3.3 V systems, it
achieves high speed operation while maintaining the CMOS low
power dissipation.
It is also designed with over voltage tolerant inputs and
outputs up to 3.6 V.
This device is non-inverting 3-state buffer having two
active-low output enables. When either the OE1, OE2 are high,
the terminal outputs are in the high-impedance state. This device
is designed to be used with 3-state memory address drivers, etc.
Weight: 0.03 g (typ.)
The 26
Ω
series resistor helps reducing output overshoot and
undershoot without external resistor.
All inputs are equipped with protection circuits against static discharge.
Features
•
•
•
26
Ω
series resistor on outputs.
Low voltage operation: V
CC
= 1.8~3.6 V
High speed operation: t
pd
= 4.4 ns (max) (V
CC
= 3.0~3.6 V)
t
pd
= 5.6 ns (max) (V
CC
= 2.3~2.7 V)
t
pd
= 9.8 ns (max) (V
CC
= 1.8 V)
•
•
3.6 V tolerant inputs and outputs.
Output current: I
OH
/I
OL
= ±12 mA (min) (V
CC
= 3.0 V)
I
OH
/I
OL
= ±8 mA (min) (V
CC
= 2.3 V)
I
OH
/I
OL
= ±4 mA (min) (V
CC
= 1.8 V)
•
•
•
•
Latch-up performance:
−300
mA
ESD performance: Machine model
≥ ±200
V
Human body model
≥ ±2000
V
Package: VSSOP (US)
Power down protection is provided on all inputs and outputs.
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2007-10-19
TC7MA2541FK
Pin Assignment
(top view)
OE1
A1
A2
A3
A4
A5
A6
A7
A8
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
(top view)
V
CC
OE2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
A1
A2
A3
A4
A5
A6
A7
A8
IEC Logic Level
OE1
OE2
(1)
(19)
&
EN
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(18)
(17)
(16)
(15)
(14)
(13)
(12)
(11)
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
GND 10
Truth Table
Inputs
Outputs
A
n
X
X
H
L
Z
Z
H
L
OE1
H
X
L
L
OE2
X
H
L
L
X: Don’t care
Z: High impedance
Absolute Maximum Ratings
(Note 1)
Characteristics
Power supply voltage
DC input voltage
DC output voltage
Input diode current
Output diode current
DC output current
Power dissipation
DC V
CC
/ground current
Storage temperature
Symbol
V
CC
V
IN
V
OUT
I
IK
I
OK
I
OUT
P
D
I
CC
/I
GND
T
stg
Rating
−
0.5~4.6
−
0.5~4.6
−
0.5~4.6
−
50
±
50
±
50
Unit
V
V
(Note 2)
V
mA
(Note 4)
mA
mA
mW
mA
°C
−
0.5~V
CC
+
0.5 (Note 3)
180
±
100
−
65~150
Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or
even destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Note 2: Off-state
Note 3: High or low state. I
OUT
absolute maximum rating must be observed.
Note 4: V
OUT
<
GND, V
OUT
>
V
CC
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2007-10-19
TC7MA2541FK
Operating Ranges
(Note 1)
Characteristics
Supply voltage
Input voltage
Output voltage
Symbol
V
CC
V
IN
V
OUT
Rating
1.8~3.6
1.2~3.6 (Note 2)
−
0.3~3.6
Unit
V
V
(Note 3)
(Note 4)
(Note 5)
(Note 6)
(Note 7)
°C
(Note 8)
ns/V
mA
V
0~3.6
0~V
CC
±
12
Output current
I
OH
/I
OL
±
8
±
4
Operating temperature
Input rise and fall time
T
opr
dt/dv
−
40~85
0~10
Note 1: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
Note 2: Data retention only
Note 3: Off-state
Note 4: High or low state
Note 5: V
CC
=
3.0~3.6 V
Note 6: V
CC
=
2.3~2.7 V
Note 7: V
CC
=
1.8 V
Note 8: V
IN
=
0.8~2.0 V, V
CC
=
3.0 V
Electrical Characteristics
<
DC Characteristics
(Ta
= −40~85°C,
2.7 V
<
V
CC
=
3.6 V)
Characteristics
High level
Low level
Symbol
V
IH
V
IL
Test Condition
⎯
⎯
V
CC
(V)
2.7~3.6
2.7~3.6
2.7~3.6
2.7
3.0
3.0
2.7~3.6
2.7
3.0
3.0
2.7~3.6
2.7~3.6
0
2.7~3.6
2.7~3.6
2.7~3.6
Min
2.0
⎯
Max
⎯
Unit
Input voltage
0.8
⎯
⎯
⎯
⎯
V
I
OH
= −
100
μ
A
High level
V
OH
V
IN
=
V
IH
or V
IL
I
OH
= −
6 mA
I
OH
= −
8 mA
Output voltage
I
OH
= −
12 mA
I
OL
=
100
μ
A
Low level
V
OL
V
IN
=
V
IH
or V
IL
I
OL
=
6 mA
I
OL
=
8 mA
I
OL
=
12 mA
Input leakage current
3-state output off-state current
Power off leakage current
I
IN
I
OZ
I
OFF
I
CC
Δ
I
CC
V
CC
−
0.2
2.2
2.4
2.2
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
V
0.2
0.4
0.55
0.8
±
5.0
±
10.0
μ
A
μ
A
μ
A
V
IN
=
0~3.6 V
V
IN
=
V
IH
or V
IL
V
OUT
=
0~3.6 V
V
IN
, V
OUT
=
0~3.6 V
V
IN
=
V
CC
or GND
V
CC
<
(V
IN
, V
OUT
)
<
3.6 V
=
=
V
IH
=
V
CC
−
0.6 V (per input)
10.0
20.0
±
20.0
Quiescent supply current
μ
A
750
3
2007-10-19
TC7MA2541FK
<
<
DC Characteristics
(Ta
= −40~85°C,
2.3 V
=
V
CC
=
2.7 V)
Characteristics
High level
Low level
Symbol
V
IH
V
IL
Test Condition
⎯
⎯
V
CC
(V)
2.3~2.7
2.3~2.7
2.3~2.7
2.3
2.3
2.3
2.3~2.7
2.3
2.3
2.3~2.7
2.3~2.7
0
2.3~2.7
2.3~2.7
Min
1.6
⎯
Max
⎯
Unit
Input voltage
0.7
⎯
⎯
⎯
⎯
V
I
OH
= −
100
μ
A
High level
Output voltage
V
OH
V
IN
=
V
IH
or V
IL
I
OH
= −
4 mA
I
OH
= −
6 mA
I
OH
= −
8 mA
I
OL
=
100
μ
A
Low level
V
OL
V
IN
=
V
IH
or V
IL
I
OL
=
6 mA
I
OL
=
8 mA
Input leakage current
3-state output off-state current
Power off leakage current
Quiescent supply current
I
IN
I
OZ
I
OFF
I
CC
V
IN
=
0~3.6 V
V
IN
=
V
IH
or V
IL
V
OUT
=
0~3.6 V
V
IN
, V
OUT
=
0~3.6 V
V
IN
=
V
CC
or GND
V
CC
<
(V
IN
, V
OUT
)
<
3.6 V
=
=
V
CC
−
0.2
2.0
1.8
1.7
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
V
0.2
0.4
0.6
±
5.0
±
10.0
μ
A
μ
A
μ
A
μ
A
10.0
20.0
±
20.0
<
DC Characteristics
(Ta
= −40~85°C,
1.8 V
=
V
CC
<
2.3 V)
Characteristics
High level
Input voltage
Low level
V
IL
⎯
Symbol
V
IH
Test Condition
⎯
V
CC
(V)
1.8~2.3
1.8~2.3
1.8
1.8
1.8
1.8
1.8
1.8
0
1.8
1.8
Min
0.7
×
V
CC
⎯
Max
⎯
Unit
0.2
×
V
CC
⎯
⎯
V
High level
Output voltage
Low level
Input leakage current
3-state output off-state current
Power off leakage current
Quiescent supply current
V
OH
V
IN
=
V
IH
or V
IL
I
OH
= −
100
μ
A
I
OH
= −
4 mA
V
CC
−
0.2
1.4
⎯
⎯
⎯
⎯
⎯
⎯
⎯
V
V
OL
I
IN
I
OZ
I
OFF
I
CC
V
IN
=
V
IH
or V
IL
V
IN
=
0~3.6 V
V
IN
=
V
IH
or V
IL
V
OUT
=
0~3.6 V
V
IN
, V
OUT
=
0~3.6 V
V
IN
=
V
CC
or GND
I
OL
=
100
μ
A
I
OL
=
4 mA
0.2
0.3
±
5.0
±
10.0
μ
A
μ
A
μ
A
μ
A
10.0
20.0
±
20.0
V
CC
<
(V
IN
, V
OUT
)
<
3.6 V
=
=
4
2007-10-19
TC7MA2541FK
AC Characteristics
(Ta
= −40~85°C,
Input: t
r
=
t
f
=
2.0 ns, C
L
=
30 pF, R
L
=
500
Ω)
Characteristics
Symbol
Test Condition
V
CC
(V)
1.8
Figure 1, Figure 2
2.5
±
0.2
3.3
±
0.3
1.8
Figure 1, Figure 3
2.5
±
0.2
3.3
±
0.3
1.8
Figure 1, Figure 3
2.5
±
0.2
3.3
±
0.3
1.8
(Note) 2.5
±
0.2
3.3
±
0.3
Min
1.5
0.8
0.6
1.5
0.8
0.6
1.5
0.8
0.6
⎯
⎯
⎯
Max
9.8
5.6
4.4
9.8
6.5
5.0
7.7
4.3
3.9
0.5
0.5
0.5
Unit
Propagation delay time
t
pLH
t
pHL
ns
3-state output enable time
t
pZL
t
pZH
ns
3-state output disable time
t
pLZ
t
pHZ
ns
Output to output skew
t
osLH
t
osHL
ns
For C
L
=
50 pF, add approximately 300 ps to the AC maximum specification.
Note: This parameter is guaranteed by design.
(t
osLH
=
|t
pLHm
−
t
pLHn
|, t
osHL
=
|t
pHLm
−
t
pHLn
|)
Dynamic Switching Characteristics
(Ta
=
25°C, Input: t
r
=
t
f
=
2.0 ns, C
L
=
30 pF)
Characteristics
Symbol
Test Condition
V
IH
=
1.8 V, V
IL
=
0 V
Quiet output maximum dynamic V
OL
V
OLP
V
IH
=
2.5 V, V
IL
=
0 V
V
IH
=
3.3 V, V
IL
=
0 V
V
IH
=
1.8 V, V
IL
=
0 V
Quiet output minimum dynamic V
OL
V
OLV
V
IH
=
2.5 V, V
IL
=
0 V
V
IH
=
3.3 V, V
IL
=
0 V
V
IH
=
1.8 V, V
IL
=
0 V
Quiet output minimum dynamic V
OH
V
OHV
V
IH
=
2.5 V, V
IL
=
0 V
V
IH
=
3.3 V, V
IL
=
0 V
(Note)
(Note)
(Note)
(Note)
(Note)
(Note)
(Note)
(Note)
(Note)
V
CC
(V)
1.8
2.5
3.3
1.8
2.5
3.3
1.8
2.5
3.3
Typ.
0.15
0.25
0.35
−
0.15
−
0.25
−
0.35
Unit
V
V
1.55
2.05
2.65
V
Note: This parameter is guaranteed by design.
Capacitive Characteristics
(Ta
=
25°C)
Characteristics
Input capacitance
Output capacitance
Power dissipation capacitance
Symbol
C
IN
C
O
C
PD
f
IN
=
10 MHz
Test Condition
⎯
⎯
V
CC
(V)
1.8, 2.5, 3.3
1.8, 2.5, 3.3
(Note)
1.8, 2.5, 3.3
Typ.
6
7
20
Unit
pF
pF
pF
Note: C
PD
is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
I
CC (opr)
=
C
PD
½V
CC
½f
IN
+
I
CC
/8 (per bit)
5
2007-10-19
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