Specification	MC74HCT259ADR2G

Circuit	1:8
Current - Output High, Low [custom]	5.2 mA
Current - Output High, Low [custom]	5.2 mA
Delay Time - Propagation	42 ns
Independent Circuits	1
Logic Type	D-Type, Addressable
Mounting Type	Surface Mount
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 °C
Output Type	1.81 mOhm
Package / Case	16-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	16-SOIC
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

MC74HCT259A Series

8-Bit Addressable Latch 1-of-8 Decoder

Part	Delay Time - Propagation	Output Type	Logic Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Mounting Type	Supplier Device Package	Independent Circuits	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply [Min]	Voltage - Supply [Max]	Circuit	Package / Case [x]	Package / Case	Package / Case [y]
ON Semiconductor MC74HCT259ADTR2G	42 ns	1.81 mOhm	D-Type Addressable	5.2 mA	5.2 mA	Surface Mount	16-TSSOP	1	-55 °C	125 °C	4.5 V	5.5 V	1:8	0.173 in	16-TSSOP	4.4 mm
ON Semiconductor MC74HCT259ADR2G	42 ns	1.81 mOhm	D-Type Addressable	5.2 mA	5.2 mA	Surface Mount	16-SOIC	1	-55 °C	125 °C	4.5 V	5.5 V	1:8	0.154 in	16-SOIC	3.9 mm
ON Semiconductor MC74HCT259ADG	42 ns	1.81 mOhm	D-Type Addressable	5.2 mA	5.2 mA	Surface Mount	16-SOIC	1	-55 °C	125 °C	4.5 V	5.5 V	1:8	0.154 in	16-SOIC	3.9 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.52
		10	$ 0.44
		25	$ 0.41
		100	$ 0.31
		250	$ 0.26
		500	$ 0.25

Description

General part information

MC74HCT259A Series

The MC74HCT259A is identical in pinout to the LS259. The device inputs are compatible with standard CMOS and LSTTL outputs. The HCT259A has four modes of operation as shown in the mode selection table. In the addressable latch mode, the data on Data In is written into the addressed latch. The addressed latch follows the data input with all nonaddressed latches remaining in their previous states. In the memory mode, all latches remain in their previous state and are unaffected by the Data or Address inputs. In the oneofeight decoding or demultiplexing mode, the addressed output follows the state of Data In with all other outputs in the LOW state. In the Reset mode all outputs are LOW and unaffected by the address and data inputs. When operating the HCT259A as an addressable latch, changing more than one bit of the address could impose a transient wrong address. Therefore, this should only be done while in the memory mode.