Document
TC7MH273FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC7MH273FK
Octal D-Type Flip Flop with Clear
The TC7MH273FK is an advanced high speed CMOS octal D-type flip-flop fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent bipolar schottky TTL while maintaining the CMOS low power dissipation. Information signals applied to D inputs are transferred to the Q outputs on the positive going edge of the clock pulse. When the CLR input is held “L”, the Q outputs are at a low logic level independent of the other inputs. An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.
Weight: 0.03 g (typ.)
Features
• • • • • • • • High speed: fmax = 165 MHz (typ.) (VCC = 5 V) Low power dissipation: ICC = 4 μA (max) (Ta = 25°C) High noise immunity: VNIH = VNIL = 28% VCC (min) Power down protection is provided on all inputs. Balanced propagation delays: tpLH ≈ tpHL Wide operating voltage range: VCC (opr) = 2~5.5 V Low noise: VOLP = 0.8 V (max) Pin and function compatible with 74ALS273
1
2007-10-19
www.DataSheet.in
TC7MH273FK
Pin Assignment (top view) IEC Logic Symbol
(1) (11)
CLR Q1 D1 D2 Q2 Q3 D3 D4 Q4
1 2 3 4 5 6 7 8 9
20 19 18 17 16 15 14
VCC Q8 D8 D7 Q7 Q6
CLR CK
R C1
D6 D5 Q5 CK
D1 D2 D3 D4 D5 D6 D7 D8
(3) (4) (7) (8) (13) (14) (17) (18)
1D
(2) (5) (6) (9) (12) (15) (16) (19)
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8
13 12 11
GND 10
Truth Table
Inputs Outputs CK X Q L L H Qn
CLR
L H H H
D X L H X
Function Clear ⎯ ⎯ No change
X: Don’t care
System Diagram
D1 3 D R D2 4 D R D3 7 D R D4 8 D R D5 13 D R D6 14 D R D7 17 D R D8 18 D R
CLR
1
CK CK 11
Q
CK
Q
CK
Q
CK
Q
CK
Q
CK
Q
CK
Q
CK
Q
2 Q1
5 Q2
6 Q3
9 Q4
12 Q5
15 Q6
16 Q7
19 Q8
2
2007-10-19
www.DataSheet.in
TC7MH273FK
Absolute Maximum Ratings (Note)
Characteristics Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT ICC PD Tstg Rating
−0.5~7.0 −0.5~7.0 −0.5~VCC + 0.5 −20 ±20 ±25 ±75
Unit V V V mA mA mA mA mW °C
180
−65~150
Note: 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.