• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
= 0.8V (Max), VIH = 2V (Min)
IL
- CMOS Input Compatibility, I
= 30%, NIH = 30% of V
IL
≤ 1µA at VOL, V
l
CC
= 5V,
o
C to 125oC
OH
Description
The ’HC259 and ’HCT259 Addressable Latch features the
low-power consumption associated with CMOS circuitry and
has speeds comparable to low-power Schottky.
This latches three active modes and one reset mode. When
both the Latch Enable (
low (8-line Demultiplexer mode) the output of the addressed
latch follo ws the Data input and all other outputs are forced
low . When both
outputs are isolated from the Data input, i.e., all latches hold
the last data presented before the
high. A condition of
mode) allows the addressed latch’s output to follow the data
input; all other latches are unaffected. The Reset mode (all
outputs low) results when
LE) and Master Reset (MR) inputs are
MR and LE are high (Memory Mode), all
LE transition from low to
LE low and MR high (Addressable Latch
LE is high and MR is low.
Ordering Information
CC
PART NUMBER
CD54HC259F3A-55 to 12516 Ld CERDIP
CD54HCT259F3A-55 to 12516 Ld CERDIP
CD74HC259E-55 to 12516 Ld PDIP
CD74HC259M-55 to 12516 Ld SOIC
TEMP. RANGE
(oC)PACKAGE
CD74HC259MT-55 to 12516 Ld SOIC
CD74HC259M96-55 to 12516 Ld SOIC
CD74HCT259E-55 to 12516 Ld PDIP
CD74HCT259M-55 to 12516 Ld SOIC
CD74HCT259MT-55 to 12516 Ld SOIC
CD74HCT259M96-55 to 12516 Ld SOIC
NOTE: Whenordering, use the entire partnumber.The suffix 96
denotes tape and reel. The suffix T denotes a small-quantity reel
of 250.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
H = High Voltage Level
L = Low Voltage Level
D = The level at the data input
Qio= The level of Qi(i = 0, 1...7, as appropriate) before the indicated steady-state input conditions were established.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. The package thermal impedance is calculated in accordance with JESD 51-7.