SN74LV123A-Q1 Datasheet, PDF (1/10 Pages) Texas Instruments – DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR WITH SCHMITT - TRIGGER INPUTS

SN74LV123AĆQ1
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR
WITH SCHMITTĆTRIGGER INPUTS
SCLS467B − FEBRUARY 2003 − REVISED MAY 2004
D Qualification in Accordance With
AEC-Q100^†
D Qualified for Automotive Applications
D Customer-Specific Configuration Control
Can Be Supported Along With
Major-Change Approval
D Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
D Typical V_OHV (Output V_OH Undershoot)
>2.3 V at V_CC = 3.3 V, T_A = 25°C
D Supports Mixed-Mode Voltage Operation on
All Ports
D Schmitt-Trigger Circuitry on A, B, and CLR
Inputs for Slow Input Transition Rates
D Edge Triggered From Active-High or
Active-Low Gated Logic Inputs
D I_off Supports Partial-Power-Down Mode
Operation
D Retriggerable for Very Long Output Pulses,
Up To 100% Duty Cycle
D Overriding Clear Terminates Output Pulse
D Glitch-Free Power-Up Reset on Outputs
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
− 1000-V Charged-Device Model (C101)
† _{Contact factory for details. Q100 qualification data available on}
request.
description/ordering information
PW PACKAGE
(TOP VIEW)
1A ₁
1B 2
1CLR 3
1Q 4
2Q 5
2C_ext 6
2R_ext/C_ext 7
GND 8
16 ^V_CC
15 1R_ext/C_ext
14 1C_ext
13 1Q
12 2Q
11 2CLR
10 2B
9 2A
The SN74LV123A is a dual retriggerable monostable multivibrator designed for 2-V to 5.5-V V_CC operation.
This edge-triggered multivibrator features output pulse-duration control by three methods. In the first method,
the A input is low, and the B input goes high. In the second method, the B input is high, and the A input goes
low. In the third method, the A input is low, the B input is high, and the clear (CLR) input goes high.
The output pulse duration is programmable by selecting external resistance and capacitance values. The
external timing capacitor must be connected between C_ext and R_ext/C_ext (positive) and an external resistor
connected between R_ext/C_ext and V_CC. To obtain variable pulse durations, connect an external variable
resistance between R_ext/C_ext and V_CC. The output pulse duration also can be reduced by taking CLR low.
ORDERING INFORMATION
TA
PACKAGE‡
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
−40°C to 105°C TSSOP − PW Tape and reel SN74LV123ATPWRQ1 L123ATQ
‡ _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design}
guidelines are available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright  2004, Texas Instruments Incorporated
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