6541 ROM manufactured by MOS Technology

IC number: 6541
IC function: 16 kbit (2k×8) ROM with two chip selects
Related components: 16 kbit (2k×8) ROM with five chip selects

Component documentation
IC number	Manufacturer	Documentation
6541	MOS Technology	Preliminary Datasheet July 1977

Component versions
IC number	Package	Access time
6541	24-pin DIP	300 ns

Details

The 6541 16K Read Only Memory is a monolithic N-channel metal-gate array manufactured with a low-threshold process and utilizing both enhancement and depletion mode MOS transistors.

Three-state outputs provide bus-compatibility with microprocessor-based memory systems. The ROM's are organized as 2048 words of 8 bits each.

Features

Interfaces with TTL, DTL or MOS

Single +5V supply

High speed operation (300 ns access)

Three-state outputs

Complete address control

No external components required

No system slow-down

Two chip selects

Maximum ratings

Maximum ratings
Rating	Symbol	Voltage	Unit
Supply Voltage	VCC	-0.3 to +7.0	V
Input/Output Voltage	VIN	-0.3 to +7.0	V
Operating Temperature	TOP	0 to 70	°C
Storage Temperature	TSTG	-55 to +150	°C

Electrical Characteristics

Electrical Characteristics (VCC = 5.0 V ± 5% VSS = 0 V; TA = 25°C)
Characteristic	Symbol	Min.	Typ.	Max.	Unit
Input High Voltage	VIH	VSS+2.0	-	VCC	V
Input Low Voltage	VIH	VSS-.3	-	VSS+.8	V
Input Leakage Current (A0-A10, CS1, CS2, Ø2)	IIN		1.0	2.5	µA
Input Current for High Impedance (Three State) Outputs: VIN = 0.4V to 2.4V	ITSI		1.0	10	µA
Output High Voltage: VCC = Min ILOAD <= -100µA	VOH	VSS+2.4			V
Output Low Voltage: VCC = Min ILOAD <= 1.6mA	VOL			VSS+.4	V
Output Low Current (sinking) VOL <= .4V	IOL	1.6			mA
Supply Current	ICC		110	150	mA

Timing

6541 timing diagram