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CD4093BE

Quad NAND Schmitt trigger, 3-18V, hysteresis, CMOS, PDIP-14

12000

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Pieza del fabricante：

CD4093BE

Paquete：

PDIP-14 (19.3 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)

Marca：

Categorías de productos：

Circuitos integrados IC, Circuitos integrados de interfaz

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Descripción

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The CD4093BE is a quad 2-input NAND Schmitt trigger from Texas Instruments, combining NAND logic with hysteresis for noise immunity in a 14-pin PDIP package.

Especificaciones

Number of Gates	4 (quad 2-input NAND Schmitt trigger)
Logic Family	CD4000B CMOS
Supply Voltage Range	3V to 18V
Hysteresis Voltage (VT+ – VT-)	0.9V typical @ 5V, 2.3V typical @ 10V
VT+ (Positive Threshold)	2.9V typical @ 5V
VT- (Negative Threshold)	2.0V typical @ 5V
Retardo de propagación	200ns typical @ 5V
Output Drive	±1.5mA @ 5V, ±3.4mA @ 10V
Corriente de reposo	2µA max @ 5V
Temperatura de funcionamiento	-55°C to +125°C
Paquete	PDIP-14 (19.3 x 6.35mm)

Características

Four independent 2-input NAND gates with Schmitt trigger inputs
Wide supply range: 3V to 18V
Schmitt trigger hysteresis for noise immunity
Can be used as 2-input NAND or single-input inverter (tie inputs together)
Ideal for signal conditioning and waveform shaping
Low quiescent current: 2µA max at 5V

Aplicaciones

Switch debouncing and signal conditioning
Oscillator and timer circuits
Slow input edge conditioning
Noise rejection on digital inputs
Pulse shaping and squaring circuits

Introducción del producto:CD4093BE Presentación del producto

The CD4093BE from Texas Instruments consists of four 2-input NAND gates, each with Schmitt trigger inputs. The Schmitt trigger action provides different threshold voltages for the positive-going (VT+) and negative-going (VT-) input transitions, creating a hysteresis window that makes the gates highly immune to noise on slowly changing or noisy input signals. At 5V supply, the typical hysteresis is 0.9V (VT+ ≈ 2.9V, VT- ≈ 2.0V). This means the output only changes state when the input crosses the upper threshold (rising) or lower threshold (falling), ignoring noise within the hysteresis band. The device can function as a 2-input NAND gate or as a Schmitt trigger inverter by tying both inputs together. The 3V to 18V supply range makes it compatible with both 5V logic and higher-voltage industrial systems. The E suffix denotes the PDIP-14 plastic through-hole package.

Principio de funcionamiento:CD4093BE Principio de funcionamiento

Each gate in the CD4093BE combines a 2-input NAND function with a Schmitt trigger input stage. The NAND logic works the same as a standard 2-input NAND gate: the output is LOW only when both inputs are HIGH. The Schmitt trigger adds hysteresis to each input: the input must rise above VT+ (positive-going threshold) to be recognized as HIGH, and must fall below VT- (negative-going threshold) to be recognized as LOW. Between VT- and VT+, the output maintains its previous state. This hysteresis eliminates output oscillation or multiple transitions that would occur with slowly rising/falling inputs or noisy signals. For a mechanical switch connected to an input through a pull-up resistor, the contact bounce creates multiple fast transitions that a standard gate would pass through to the output; the Schmitt trigger’s hysteresis absorbs these bounces and produces a single clean output transition. When both inputs of a gate are tied together, the gate functions as a Schmitt trigger inverter (NOT gate with hysteresis). Two such gates with an RC feedback network create a simple oscillator: the capacitor charges through the resistor until reaching VT+, then the output goes LOW and the capacitor discharges through the resistor until reaching VT-, and the cycle repeats.

Descripción de la clavija:CD4093BE Definición y funciones de las clavijas

Pin	Nombre	Tipo	Descripción
1	1A	Entrada	Gate 1 input A (Schmitt trigger)
2	1B	Entrada	Gate 1 input B (Schmitt trigger)
3	1Y	Salida	Gate 1 output (NAND)
4	2A	Entrada	Gate 2 input A (Schmitt trigger)
5	2B	Entrada	Gate 2 input B (Schmitt trigger)
6	2Y	Salida	Gate 2 output (NAND)
7	VSS	Potencia	Suelo
8	3Y	Salida	Gate 3 output (NAND)
9	3A	Entrada	Gate 3 input A (Schmitt trigger)
10	3B	Entrada	Gate 3 input B (Schmitt trigger)
11	4Y	Salida	Gate 4 output (NAND)
12	4A	Entrada	Gate 4 input A (Schmitt trigger)
13	4B	Entrada	Gate 4 input B (Schmitt trigger)
14	VDD	Potencia	Supply (3V to 18V)

Application Scenarios:In which products and applications isCD4093BE usado

Switch Debounce: Direct connection from mechanical switch through pull-up to Schmitt input; hysteresis absorbs bounce
RC Oscillator: Two gates with R-C feedback form a simple square-wave oscillator; frequency = 1/(0.5×R×C) approx
Signal Conditioning: Convert slowly-varying analog signals (sensors, photodiodes) to clean digital levels
Noise Gating: Reject noise pulses smaller than the hysteresis window (0.9V at 5V) on digital input lines
Level Detection: Use as comparator with built-in hysteresis; adjust thresholds via supply voltage scaling

Alternative Models:What chips are recommended as replacements for CD4093BE

Modelo	Fabricante	Diferencia clave	Paquete	Supply
CD4093BM	TI	SOIC-14 surface-mount version with identical logic function and 3-18V range	SOIC-14	3-18V
CD4093BE	TI	Through-hole DIP version for prototyping and legacy board repair	DIP-14	3-18V
HEF4093BT	NXP	Pin-compatible CMOS version with improved ESD protection and 3-15V supply	SOIC-14	3-15V
MC144093BDR2G	onsemi	Pin-compatible equivalent with RoHS compliance and AEC-Q100 automotive option	SOIC-14	3-18V
74HC132D	TI/Nexperia	HC CMOS version with higher speed and 2-6V supply for modern logic systems	SOIC-14	2-6V
74HC132N	TI/Nexperia	HC CMOS through-hole version for prototyping with 2-6V supply range	DIP-14	2-6V
74HCT132D	Nexperia	HCT version with TTL-compatible inputs for mixed 5V TTL/CMOS systems	SOIC-14	4.5-5.5V

CD4093 is the CMOS 4000-series quad 2-input nand schmitt trigger operating over the wide 3-18V supply range. The HEF4093 (NXP) and MC144093 (onsemi) are direct pin-compatible equivalents. For higher speed at the cost of narrower voltage range, the 74HC132 HC/HCT families offer significantly faster propagation delay and lower power consumption at 2-6V. Surface-mount versions use the BM/M suffix (SOIC); through-hole versions use the BE suffix (DIP).