M28256 datasheet(7/21 Pages) STMICROELECTRONICS

7 / 21 page

Input Rise and Fall Times

≤ 20ns

Input Pulse Voltages (M28256)

0.4V to 2.4V

Input Pulse Voltages (M28256-W)

0V to VCC –0.3V

Input and Output Timing Ref. Voltages (M28256)

0.8V to 2.0V

Input and Output Timing Ref. Voltages (M28256-W)

0.5 VCC

Table 4. AC Measurement Conditions

AI02101B

4.5V to 5.5V Operating Voltage

2.7V to 3.6V Operating Voltage

VCC – 0.3V

0.5 VCC

2.4V

0.4V

2.0V

0.8V

Figure 7. AC Testing Input Output Waveforms

AI02102B

OUT

CL = 100pF

CL includes JIG capacitance

IOL

DEVICE

UNDER

TEST

IOH

Figure 8. AC Testing Equivalent Load Circuit

Symbol

Parameter

Test Condition

Min

Max

Unit

CIN

Input Capacitance

VIN =0V

COUT

Output Capacitance

VOUT =0V

Note: 1. Sampled only, not 100% tested.

Table 5. Capacitance (1) (TA =25

°C, f = 1 MHz )

Symbol

Parameter

Test Condition

Min

Max

Unit

ILI

Input Leakage Current

≤ VIN ≤ VCC

µA

ILO

Output Leakage Current

≤ VIN ≤ VCC

µA

ICC

(1)

Supply Current (TTL inputs)

E = VIL,G = VIL ,f = 5 MHz

Supply Current (CMOS inputs)

E = VIL,G = VIL ,f = 5 MHz

ICC1

(1)

Supply Current (Standby) TTL

E = VIH

1mA

ICC2

(1)

Supply Current (Standby) CMOS

E > VCC –0.3V

100

µA

VIL

Input Low Voltage

– 0.3

0.8

VIH

Input High Voltage

VCC + 0.5

VOL

Output Low Voltage

IOL = 2.1 mA

0.4

VOH

Output High Voltage

IOH = –400

µA

2.4

Note: 1. All I/O’s open circuit.

Table 6. Read Mode DC Characteristics for M28256

(TA = 0 to 70

°C or –40 to 85°C; VCC = 4.5V to 5.5V)

7/21

M28256

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