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74VHC20 Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer 74VHC20
Beschreibung DUAL 4-INPUT NAND GATE
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 7 Seiten
74VHC20 Datasheet, Funktion
® 74VHC20
DUAL 4-INPUT NAND GATE
s HIGH SPEED: tPD = 3.3 ns (TYP.) at VCC = 5V
s LOW POWER DISSIPATION:
ICC = 2 µA (MAX.) at TA = 25 oC
s HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
s POWER DOWN PROTECTION ON INPUTS
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 8 mA (MIN)
s BALANCED PROPAGATION DELAYS:
tPLH tPHL
s OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 5.5V
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 20
s IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74VHC20 is an advanced high-speed CMOS
DUAL 4-INPUT NAND GATE fabricated with
sub-micron silicon gate and double-layer metal
wiring C2MOS technology.
The internal circuit is composed of 3 stages
including buffer output, which provide high noise
PRELIMINARY DATA
M
(Micro Package)
T
(TSSOP Package)
ORDER CODES :
74VHC20M
74VHC20T
immunity and stable output.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage. This device can be
used to interface 5V to 3V.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
June 1999
1/7






74VHC20 Datasheet, Funktion
74VHC20
DIM.
A
A1
A2
b
c
D
E
E1
e
K
L
TSSOP14 MECHANICAL DATA
MIN.
0.05
0.85
0.19
0.09
4.9
6.25
4.3
0o
0.50
mm
TYP.
0.10
0.9
5
6.4
4.4
0.65 BSC
4o
0.60
MAX.
1.1
0.15
0.95
0.30
0.20
5.1
6.5
4.48
8o
0.70
MIN.
0.002
0.335
0.0075
0.0035
0.193
0.246
0.169
0o
0.020
inch
TYP.
0.004
0.354
0.197
0.252
0.173
0.0256 BSC
4o
0.024
MAX.
0.433
0.006
0.374
0.0118
0.0079
0.201
0.256
0.176
8o
0.028
A A2
A1 b
e
D
c
KL
E
PIN 1 IDENTIFICATION
1
6/7
E1

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