SN74LS132D View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
SN74LS132D Datasheet PDF : 5 Pages
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QUAD 2-INPUT
SCHMITT TRIGGER NAND GATE
The SN54 / 74LS132 contains four 2-Input NAND Gates which accept stan-
dard TTL input signals and provide standard TTL output levels. They are ca-
pable of transforming slowly changing input signals into sharply defined, jitter-
free output signals. Additionally, they have greater noise margin than
conventional NAND Gates.
Each circuit contains a 2-input Schmitt trigger followed by a Darlington level
shifter and a phase splitter driving a TTL totem pole output. The Schmitt trigger
uses positive feedback to effectively speed-up slow input transitions, and
provide different input threshold voltages for positive and negative-going tran-
sitions. This hysteresis between the positive-going and negative-going input
thresholds (typically 800 mV) is determined internally by resistor ratios and is
essentially insensitive to temperature and supply voltage variations. As long
as one input remains at a more positive voltage than VT+ (MAX), the gate will
respond to the transitions of the other input as shown in Figure 1.
LOGIC AND CONNECTION DIAGRAM
DIP (TOP VIEW)
VCC
14
13
12
11
10
9
8
1
2
3
4
5
6
7
GND
SN54/74LS132
QUAD 2-INPUT
SCHMITT TRIGGER NAND GATE
LOW POWER SCHOTTKY
14
1
J SUFFIX
CERAMIC
CASE 632-08
14
1
N SUFFIX
PLASTIC
CASE 646-06
14
1
D SUFFIX
SOIC
CASE 751A-02
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
5
VCC = 5 V
° TA = 25 C
4
3
2
1
0
0
0.4
0.95
1.2
VIN, INPUT VOLTAGE (VOLTS)
1.8
2
Figure 1. VIN versus VOUT Transfer Function
FAST AND LS TTL DATA
5-212
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