TMS44400, TMS44400P, TMS46400, TMS46400P

1048576-WORD BY 4-BIT

DYNAMIC RANDOM-ACCESS MEMORIES

SMHS562C – MAY 1995 – REVISED NOVEMBER 1996

7

POST OFFICE BOX 1443

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted)

PARAMETER

TEST

CONDITIONS

’46400 - 60

’46400P - 60

’46400 - 70

’46400P - 70

’46400 - 80

’46400P - 80

UNIT

PARAMETER

CONDITIONS

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

VOH

High-level

IOH = – 2 mA (LVTTL)

2.4

2.4

2.4

V

VOH

High level

output voltage

IOH = – 100 µA (LVCMOS)

VCC – 0.2

VCC – 0.2

VCC – 0.2

V

VOL

Low-level

IOL = 2 mA (LVTTL)

0.4

0.4

0.4

V

VOL

Low level

output voltage

IOL = 100 µA (LVCMOS)

0.2

0.2

0.2

V

II

Input current

(leakage)

VI = 0 V to 3.9 V, VCC = 3.6 V,

All others = 0 V to VCC

± 10

± 10

± 10

µA

IO

Output current

(leakage)

VO = 0 V to VCC,VCC = 3.6 V,

CAS high

± 10

± 10

± 10

µA

ICC1

Read- or

write-cycle

current

(see Note 3)

Minimum cycle,

VCC = 3.6 V

70

60

50

mA

I

Sdb

After one memory cycle,

RAS and CAS high,

VIH = 2 V (LVTTL)

2

2

2

mA

ICC2

Standby

current

After one memory

cycle, RAS and CAS

high

’46400

300

300

300

µA

high,

VIH = VCC – 0.2 V

(LVCMOS)

’46400P

200

200

200

µA

ICC3

Average

refresh current

(RAS only or

CBR)

(see Note 4)

Minimum cycle,

VCC = 3.6 V,

RAS cycling,

CAS high (RAS only);

RAS low after CAS low (CBR)

70

60

50

mA

ICC4

Average page

current

(see Notes 3

and 5)

tPC = MIN,

VCC = 3.6 V,

RAS low,

CAS cycling

60

50

40

mA

ICC6†

Self-refresh

current

(see Note 3)

CAS

≤ 0.2 V,

RAS < 0.2 V,

tRAS and tCAS > 1000 ms

200

200

200

µA

ICC7

Standby

current,

outputs

enabled

(see Note 3)

RAS = VIH,

CAS = VIL,

Data out = enabled

5

5

5

mA

ICC10†

Battery-backup

current

(with CBR)

tRC = 125 µs,

tRAS ≤ 1 ms,

VCC – 0.2 V ≤ VIH ≤ 3.9 V,

0 V

≤ VIL ≤ 0.2 V,

W and OE = VIH,

Address and data stable

300

300

300

µA

† For TMS46400P only

NOTES:

3. ICC MAX is specified with no load connected.

4. Measured with a maximum of one address change while RAS = VIL

5. Measured with a maximum of one address change while CAS = VIH