TOSHIBA TC74VCX162721FT Technical data
TC74VCX162721FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VCX162721FT
Low-Voltage 20-Bit D-Type Flip-Flop with 3.6-V Tolerant Inputs and Outputs
The TC74VCX162721FT is a high-performance CMOS 20-bit
D-type flip-flop. 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 overvoltage tolerant inputs and outputs
up to 3.6 V.
The TC74VCX162721FT is an edge-triggered D-type flip-flop
with qualified clock storage. On the positive transition of the
clock (CK) input, the device provides true data at the Q outputs if
the clock-enable (CKEN) input is low. If CKEN is high, no data is
stored. When the OE input is high, the outputs are in a
high-impedance state. This device is designed to be used with
3-state memory address drivers, etc.
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
Weight: 0.25 g (typ.)
• 26-Ω series resistors on outputs
• Low-voltage operation: V
• High-speed operation : t
: tpd = 5.8 ns (max) (VCC = 2.3 to 2.7 V)
: t
• Output current : I
: IOH/IOL = ±8 mA (min) (VCC = 2.3 V)
: I
• Latch-up performance: −300 mA
• ESD performance: Machine model ≥ ±200 V
Human body model ≥ ±2000 V
• Package: TSSOP
• 3.6-V tolerant function and power-down protection provided on all inputs and outputs
OH/IOL
OH/IOL
= 1.8 to 3.6 V
CC
= 4.4 ns (max) (VCC = 3.0 to 3.6 V)
pd
= 9.8 ns (max) (VCC = 1.8 V)
pd
= ±12 mA (min) (VCC = 3.0 V)
= ±4 mA (min) (VCC = 1.8 V)
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2007-10-19
TC74VCX162721FT
Pin Assignment
1
OE
2
Q1
Q2
3
GND
4
5
Q3
Q4
6
V
7
CC
Q5
8
Q6
9
Q7
10
GND 11
Q8
12
13
Q9
14
Q10
Q11
15
Q12
16
17
Q13
(top view)
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
CK
D1
D2
GND
D3
D4
V
CC
D5
D6
D7
GND
D8
D9
D10
D11
D12
D13
IEC Logic Symbol
OE1
CK
CKEN
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
1
56
29
55
54
52
51
49
48
47
45
44
43
42
41
40
38
37
36
34
33
31
30
EN2
C1
1C
1D
2
Q1
3
Q2
5
Q3
6
Q4
8
Q5
9
Q6
10
Q7
12
Q8
13
Q9
14
Q10
15
Q11
16
Q12
17
Q13
19
Q14
20
Q15
21
Q16
23
Q17
24
Q18
26
Q19
27
Q20
39
38
37
36
35
34
33
32
31
30
29
GND
D14
D15
D16
V
CC
D17
D18
GND
D19
D20
CKEN
GND
Q14
Q15
V
CC
Q17
Q18
18
19
20
21 Q16
22
23
24
25 GND
26 Q19
27 Q20
28 NC
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2007-10-19
TC74VCX162721FT
Truth Table
OE CKEN CK D
L H X X Qn
L L H H
L L L L
L L L or H X Qn
H X X X Z
X: Don’t care
Z: High impedance
Qn: No change
(each flip-flop)
System Diagram
Inputs
OE
CKEN
Outputs
Q
1
29
56
CK
55
D1
CK
QQ1
D
To 19 other channels
2
3
2007-10-19
TC74VCX162721FT
Absolute Maximum Ratings (Note 1)
Characteristics Symbol Rating Unit
Power supply voltage V
DC input voltage V
DC output voltage V
Input diode current I
Output diode current I
DC output current I
Power dissipation P
DC VCC/ground current per supply pin ICC/I
Storage temperature T
CC
IN
OUT
IK
OK
OUT
D
GND
stg
−0.5 to 4.6 (Note 2)
−0.5 to V
±50 (Note 4) mA
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).
−0.5 to 4.6 V
−0.5 to 4.6 V
+ 0.5
CC
(Note 3)
−50 mA
±50 mA
400 mW
±100 mA
−65 to 150 °C
V
Note 2: OFF state
Note 3: High or low state. I
Note 4: V
OUT
< GND, V
absolute maximum rating must be observed.
OUT
> VCC
OUT
Operating Ranges (Note 1)
Characteristics Symbol Rating Unit
Power supply voltage V
Input voltage V
Output voltage V
Output current IOH/IOL
Operating temperature T
Input rise and fall time dt/dv 0 to 10 (Note 8) ns/V
CC
IN
OUT
opr
1.2 to 3.6 (Note 2)
0 to 3.6 (Note 3)
0 to VCC (Note 4)
±12 (Note 5)
±8 (Note 6)
1.8 to 3.6
−0.3 to 3.6 V
±4 (Note 7)
−40 to 85 °C
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
V
V
mA
Note 3: OFF state
Note 4: High or low state
Note 5: V
= 3.0 to 3.6 V
CC
Note 6: VCC = 2.3 to 2.7 V
Note 7: VCC = 1.8 V
Note 8: VIN = 0.8 to 2.0 V, VCC = 3.0 V
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2007-10-19
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