tc7mh123afk TOSHIBA Semiconductor CORPORATION, tc7mh123afk Datasheet

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tc7mh123afk

Manufacturer Part Number
tc7mh123afk
Description
Dual Monostable Multivibrator
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet

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Dual Monostable Multivibrator
CMOS monostable multivibrators fabricated with silicon gate
C
input (positive edge). These inputs are valid for a slow rise/fall
time signal (t
device may also be triggered by using CLR input (positive edge).
time period determined by the external resistor and capacitor (Rx,
Cx). A low level at the CLR input breaks this state.
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.
Features
2
The TC7MH123AFK, TC7MH221AFK are advanced high speed
There are two trigger inputs, A input (negative edge), and B
After triggering, the output stays in a monostable state for a
Limits for Cx and Rx are:
An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply
MOS technology.
TC7MH123AFK Retriggerable
TC7MH221AFK Non-Retriggerable
High speed: t
Low power dissipation: Standby state
High noise immunity: V
Power down protection is equipped with all inputs.
Balanced propagation delays: t
Wide operating voltage range: V
Pin and function compatible with 74HC123A/221A
External capacitor, Cx..........No limit
External resistor, Rx ............V
TC7MH123AFK,TC7MH221AFK
r
= t
pd
f
= 1 s) as they are schmitt trigger inputs. This
= 8.1 ns (typ.) (V
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
Active state
NIH
= V
pLH
NIL
V
CC (opr)
CC
CC
CC
≈ t
= 5 V)
= 28% V
= 2.0 V more than 5 kΩ
= 3.0 V more than 1 kΩ
pHL
= 2~5.5 V
I
I
CC
CC
CC
= 4 μA (max) (Ta = 25°C)
= 600 μA (max) (V
(min)
1
CC
= 5.0 V)
Weight: 0.02 g (typ.)
TC7MH123,221AFK
2007-10-19

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tc7mh123afk Summary of contents

Page 1

... TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC7MH123AFK,TC7MH221AFK Dual Monostable Multivibrator TC7MH123AFK Retriggerable TC7MH221AFK Non-Retriggerable The TC7MH123AFK, TC7MH221AFK are advanced high speed CMOS monostable multivibrators fabricated with silicon gate 2 C MOS technology. There are two trigger inputs, A input (negative edge), and B input (positive edge) ...

Page 2

... CLR 2Cx 6 2Rx/Cx 7 GND 8 Note: When using a single circuit only, please set CLR to L, keep Rx/Cx・Q・ Q open and set other pins to either IEC Logic Symbol TC7MH123AFK (1) & (2) 1B (3) 1 CLR R (14) 1Cx CX (15) 1Rx/Cx RX/CX (9) ...

Page 3

Block Diagram 14 CX RX/ Note 1: Cx, Rx, Dx are external capacitor, resistor, and diode, respectively. Note 2: External clamping diode, Dx; The external capacitor is charged the supply voltage is turned ...

Page 4

... System Diagram TC7MH123AFK CLR Timing Chart TC7MH123AFK A B CLR OUT w V ref F OUT w 4 TC7MH123,221AFK V ref ref ...

Page 5

System Diagram TC7MH221AFK CLR Timing Chart TC7MH221AFK A B CLR OUT w V ref ...

Page 6

... (3) Retrigger operation (TC7MH123AFK) When a new trigger is applied to either input while in the monostable state effective only if the IC is charging Cx. The voltage level of the Rx/Cx node then falls to Vref L level again. Therefore the Q output stays high if the next trigger comes in before the time period set by Cx and Rx. ...

Page 7

Absolute Maximum Ratings Characteristics Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC V /ground current CC Power dissipation Storage temperature Note: Exceeding any of the absolute maximum ratings, even ...

Page 8

... Active-state supply current I CC (Note) Note: Per circuit Timing Requirements (Input: t Characteristics Symbol t w (L) Minimum pulse width t w (H) Minimum clear width ( CLR ) t w (L) Minimum retrigger time t (Note) Note: For TC7MH123AFK only Test Condition V (V) CC 2.0 ⎯ IH 3.0~5.5 2.0 ⎯ IL 3.0~5.5 2.0 = − 50 μ 3 ...

Page 9

AC Characteristics (Input: t Characteristics Symbol Propagation delay time t pLH B- pHL Propagation delay time t pLH t pHL ( CLR trigger- Propagation delay time t pLH t pHL ( CLR ...

Page 10

... WOUT = K・Cx・Rx) 1.2 1 1000 0.01 μF 1 μ 0.1 μ Supply voltage V CC (V) Input Equivalent Circuit Input 10 1 0.1 0. TC7MH123,221AFK t – V Characteristics (typ (TC7MH123AFK 25° 0.01 μ 1000 100 Supply voltage V CC (V) 2007-10-19 ...

Page 11

Package Dimensions Weight: 0.02 g (typ.) TC7MH123,221AFK 11 2007-10-19 ...

Page 12

RESTRICTIONS ON PRODUCT USE • The information contained herein is subject to change without notice. • TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to ...

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