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ST Microelectronics - 4 WORD X 4 BIT REGISTER FILE 3 STATE

Numéro de référence M54HC670
Description 4 WORD X 4 BIT REGISTER FILE 3 STATE
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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M54HC670 fiche technique
M54HC670
M74HC670
4 WORD X 4 BIT REGISTER FILE (3 STATE)
. HIGH SPEED
tPD = 23 ns (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS670
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M 54HC 67 0F 1R
M 74H C6 70 M1 R
M 74HC 67 0B 1R
M 74H C6 70 C1 R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HC670 is a high speed CMOS 4 WORD
X 4 BIT REGISTER FILE (3-STATE) fabricated in
silicon gate C2MOS technology. It has the same
high speed performance of LSTTL combined with
true CMOS low power consumption. The
M54HC/74HC670 is a 4 x 4 Register File organized
as four words by four bits. Separate read and write
inputs, both address and enable, allow simulta-
neous read and write operation. The 3-state outputs
make it possible to connect up to 128 outputs to in-
crease the word capacity up to 512 words. Any num-
ber of these devices can be operated in parallel to
generate an n-bit length. All inputs are equipped with
protection circuits against static discharge and tran-
sient excess voltage.
October 1992
NC =
No Internal
Connection
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